684 lines
22 KiB
Rust
684 lines
22 KiB
Rust
#![allow(non_snake_case)]
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use crate::module::ModuleFlags;
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use crate::plugin::*;
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use crate::{def_package, Position, RhaiResultOf, ERR, INT};
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#[cfg(feature = "no_std")]
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use std::prelude::v1::*;
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#[cfg(not(feature = "no_float"))]
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use crate::FLOAT;
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#[cfg(feature = "no_std")]
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#[cfg(not(feature = "no_float"))]
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use num_traits::Float;
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#[cfg(feature = "decimal")]
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use rust_decimal::Decimal;
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#[cfg(feature = "decimal")]
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use super::arithmetic::make_err;
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macro_rules! gen_conversion_as_functions {
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($root:ident => $func_name:ident ( $($arg_type:ident),+ ) -> $result_type:ty) => {
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pub mod $root { $(pub mod $arg_type {
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use super::super::*;
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#[export_fn]
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pub fn $func_name(x: $arg_type) -> $result_type {
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x as $result_type
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}
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})* }
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}
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}
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#[cfg(feature = "decimal")]
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macro_rules! gen_conversion_into_functions {
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($root:ident => $func_name:ident ( $($arg_type:ident),+ ) -> $result_type:ty) => {
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pub mod $root { $(pub mod $arg_type {
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use super::super::*;
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#[export_fn]
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pub fn $func_name(x: $arg_type) -> $result_type {
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x.into()
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}
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})* }
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}
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}
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macro_rules! reg_functions {
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($mod_name:ident += $root:ident :: $func_name:ident ( $($arg_type:ident),+ ) ) => { $(
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set_exported_fn!($mod_name, stringify!($func_name), $root::$arg_type::$func_name);
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)* }
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}
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def_package! {
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/// Basic mathematical package.
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pub BasicMathPackage(lib) {
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lib.flags |= ModuleFlags::STANDARD_LIB;
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// Integer functions
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combine_with_exported_module!(lib, "int", int_functions);
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reg_functions!(lib += basic_to_int::to_int(char));
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#[cfg(not(feature = "only_i32"))]
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#[cfg(not(feature = "only_i64"))]
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{
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reg_functions!(lib += numbers_to_int::to_int(i8, u8, i16, u16, i32, u32, i64, u64));
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#[cfg(not(target_family = "wasm"))]
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reg_functions!(lib += num_128_to_int::to_int(i128, u128));
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}
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#[cfg(not(feature = "no_float"))]
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{
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// Floating point functions
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combine_with_exported_module!(lib, "float", float_functions);
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// Trig functions
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combine_with_exported_module!(lib, "trig", trig_functions);
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reg_functions!(lib += basic_to_float::to_float(INT));
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#[cfg(not(feature = "only_i32"))]
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#[cfg(not(feature = "only_i64"))]
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{
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reg_functions!(lib += numbers_to_float::to_float(i8, u8, i16, u16, i32, u32, i64, u32));
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#[cfg(not(target_family = "wasm"))]
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reg_functions!(lib += num_128_to_float::to_float(i128, u128));
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}
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}
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// Decimal functions
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#[cfg(feature = "decimal")]
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{
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combine_with_exported_module!(lib, "decimal", decimal_functions);
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reg_functions!(lib += basic_to_decimal::to_decimal(INT));
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#[cfg(not(feature = "only_i32"))]
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#[cfg(not(feature = "only_i64"))]
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reg_functions!(lib += numbers_to_decimal::to_decimal(i8, u8, i16, u16, i32, u32, i64, u64));
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}
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}
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}
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#[export_module]
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mod int_functions {
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/// Parse a string into an integer number.
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///
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/// # Example
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///
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/// ```rhai
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/// let x = parse_int("123");
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///
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/// print(x); // prints 123
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/// ```
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#[rhai_fn(name = "parse_int", return_raw)]
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pub fn parse_int(string: &str) -> RhaiResultOf<INT> {
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parse_int_radix(string, 10)
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}
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/// Parse a string into an integer number of the specified `radix`.
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///
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/// `radix` must be between 2 and 36.
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///
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/// # Example
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///
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/// ```rhai
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/// let x = parse_int("123");
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///
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/// print(x); // prints 123
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///
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/// let y = parse_int("123abc", 16);
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///
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/// print(y); // prints 1194684 (0x123abc)
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/// ```
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#[rhai_fn(name = "parse_int", return_raw)]
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pub fn parse_int_radix(string: &str, radix: INT) -> RhaiResultOf<INT> {
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if !(2..=36).contains(&radix) {
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return Err(
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ERR::ErrorArithmetic(format!("Invalid radix: '{radix}'"), Position::NONE).into(),
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);
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}
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#[allow(clippy::cast_sign_loss, clippy::cast_possible_truncation)]
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INT::from_str_radix(string.trim(), radix as u32).map_err(|err| {
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ERR::ErrorArithmetic(
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format!("Error parsing integer number '{string}': {err}"),
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Position::NONE,
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)
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.into()
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})
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}
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}
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#[cfg(not(feature = "no_float"))]
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#[export_module]
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mod trig_functions {
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/// Return the sine of the floating-point number in radians.
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pub fn sin(x: FLOAT) -> FLOAT {
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x.sin()
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}
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/// Return the cosine of the floating-point number in radians.
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pub fn cos(x: FLOAT) -> FLOAT {
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x.cos()
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}
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/// Return the tangent of the floating-point number in radians.
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pub fn tan(x: FLOAT) -> FLOAT {
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x.tan()
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}
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/// Return the hyperbolic sine of the floating-point number in radians.
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pub fn sinh(x: FLOAT) -> FLOAT {
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x.sinh()
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}
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/// Return the hyperbolic cosine of the floating-point number in radians.
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pub fn cosh(x: FLOAT) -> FLOAT {
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x.cosh()
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}
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/// Return the hyperbolic tangent of the floating-point number in radians.
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pub fn tanh(x: FLOAT) -> FLOAT {
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x.tanh()
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}
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/// Return the arc-sine of the floating-point number, in radians.
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pub fn asin(x: FLOAT) -> FLOAT {
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x.asin()
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}
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/// Return the arc-cosine of the floating-point number, in radians.
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pub fn acos(x: FLOAT) -> FLOAT {
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x.acos()
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}
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/// Return the arc-tangent of the floating-point number, in radians.
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pub fn atan(x: FLOAT) -> FLOAT {
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x.atan()
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}
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/// Return the arc-tangent of the floating-point numbers `x` and `y`, in radians.
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#[rhai_fn(name = "atan")]
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pub fn atan2(x: FLOAT, y: FLOAT) -> FLOAT {
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x.atan2(y)
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}
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/// Return the arc-hyperbolic-sine of the floating-point number, in radians.
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pub fn asinh(x: FLOAT) -> FLOAT {
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x.asinh()
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}
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/// Return the arc-hyperbolic-cosine of the floating-point number, in radians.
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pub fn acosh(x: FLOAT) -> FLOAT {
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x.acosh()
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}
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/// Return the arc-hyperbolic-tangent of the floating-point number, in radians.
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pub fn atanh(x: FLOAT) -> FLOAT {
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x.atanh()
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}
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/// Return the hypotenuse of a triangle with sides `x` and `y`.
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pub fn hypot(x: FLOAT, y: FLOAT) -> FLOAT {
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x.hypot(y)
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}
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}
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#[cfg(not(feature = "no_float"))]
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#[export_module]
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mod float_functions {
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/// Return the natural number _e_.
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#[rhai_fn(name = "E")]
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pub fn e() -> FLOAT {
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#[cfg(not(feature = "f32_float"))]
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return std::f64::consts::E;
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#[cfg(feature = "f32_float")]
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return std::f32::consts::E;
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}
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/// Return the number π.
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#[rhai_fn(name = "PI")]
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pub fn pi() -> FLOAT {
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#[cfg(not(feature = "f32_float"))]
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return std::f64::consts::PI;
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#[cfg(feature = "f32_float")]
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return std::f32::consts::PI;
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}
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/// Convert degrees to radians.
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pub fn to_radians(x: FLOAT) -> FLOAT {
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x.to_radians()
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}
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/// Convert radians to degrees.
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pub fn to_degrees(x: FLOAT) -> FLOAT {
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x.to_degrees()
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}
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/// Return the square root of the floating-point number.
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pub fn sqrt(x: FLOAT) -> FLOAT {
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x.sqrt()
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}
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/// Return the exponential of the floating-point number.
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pub fn exp(x: FLOAT) -> FLOAT {
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x.exp()
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}
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/// Return the natural log of the floating-point number.
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pub fn ln(x: FLOAT) -> FLOAT {
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x.ln()
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}
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/// Return the log of the floating-point number with `base`.
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pub fn log(x: FLOAT, base: FLOAT) -> FLOAT {
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x.log(base)
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}
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/// Return the log of the floating-point number with base 10.
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#[rhai_fn(name = "log")]
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pub fn log10(x: FLOAT) -> FLOAT {
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x.log10()
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}
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/// Return the largest whole number less than or equals to the floating-point number.
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#[rhai_fn(name = "floor", get = "floor")]
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pub fn floor(x: FLOAT) -> FLOAT {
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x.floor()
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}
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/// Return the smallest whole number larger than or equals to the floating-point number.
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#[rhai_fn(name = "ceiling", get = "ceiling")]
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pub fn ceiling(x: FLOAT) -> FLOAT {
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x.ceil()
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}
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/// Return the nearest whole number closest to the floating-point number.
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/// Rounds away from zero.
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#[rhai_fn(name = "round", get = "round")]
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pub fn round(x: FLOAT) -> FLOAT {
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x.round()
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}
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/// Return the integral part of the floating-point number.
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#[rhai_fn(name = "int", get = "int")]
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pub fn int(x: FLOAT) -> FLOAT {
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x.trunc()
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}
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/// Return the fractional part of the floating-point number.
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#[rhai_fn(name = "fraction", get = "fraction")]
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pub fn fraction(x: FLOAT) -> FLOAT {
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x.fract()
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}
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/// Return `true` if the floating-point number is `NaN` (Not A Number).
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#[rhai_fn(name = "is_nan", get = "is_nan")]
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pub fn is_nan(x: FLOAT) -> bool {
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x.is_nan()
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}
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/// Return `true` if the floating-point number is finite.
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#[rhai_fn(name = "is_finite", get = "is_finite")]
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pub fn is_finite(x: FLOAT) -> bool {
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x.is_finite()
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}
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/// Return `true` if the floating-point number is infinite.
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#[rhai_fn(name = "is_infinite", get = "is_infinite")]
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pub fn is_infinite(x: FLOAT) -> bool {
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x.is_infinite()
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}
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/// Convert the floating-point number into an integer.
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#[rhai_fn(name = "to_int", return_raw)]
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pub fn f32_to_int(x: f32) -> RhaiResultOf<INT> {
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#[allow(clippy::cast_precision_loss)]
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if cfg!(not(feature = "unchecked")) && (x > (INT::MAX as f32) || x < (INT::MIN as f32)) {
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Err(
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ERR::ErrorArithmetic(format!("Integer overflow: to_int({x})"), Position::NONE)
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.into(),
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)
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} else {
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Ok(x.trunc() as INT)
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}
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}
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/// Convert the floating-point number into an integer.
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#[rhai_fn(name = "to_int", return_raw)]
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pub fn f64_to_int(x: f64) -> RhaiResultOf<INT> {
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#[allow(clippy::cast_precision_loss)]
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if cfg!(not(feature = "unchecked")) && (x > (INT::MAX as f64) || x < (INT::MIN as f64)) {
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Err(
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ERR::ErrorArithmetic(format!("Integer overflow: to_int({x})"), Position::NONE)
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.into(),
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)
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} else {
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Ok(x.trunc() as INT)
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}
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}
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/// Parse a string into a floating-point number.
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///
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/// # Example
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///
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/// ```rhai
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/// let x = parse_int("123.456");
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///
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/// print(x); // prints 123.456
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/// ```
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#[rhai_fn(return_raw)]
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pub fn parse_float(string: &str) -> RhaiResultOf<FLOAT> {
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string.trim().parse::<FLOAT>().map_err(|err| {
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ERR::ErrorArithmetic(
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format!("Error parsing floating-point number '{string}': {err}"),
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Position::NONE,
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)
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.into()
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})
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}
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/// Convert the 32-bit floating-point number to 64-bit.
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#[cfg(not(feature = "f32_float"))]
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#[rhai_fn(name = "to_float")]
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pub fn f32_to_f64(x: f32) -> f64 {
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x.into()
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}
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}
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#[cfg(feature = "decimal")]
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#[export_module]
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mod decimal_functions {
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use num_traits::ToPrimitive;
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use rust_decimal::{
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prelude::{FromStr, RoundingStrategy},
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Decimal, MathematicalOps,
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};
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#[cfg(not(feature = "no_float"))]
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use std::convert::TryFrom;
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/// Return the natural number _e_.
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#[cfg(feature = "no_float")]
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#[rhai_fn(name = "PI")]
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pub fn pi() -> Decimal {
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Decimal::PI
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}
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/// Return the number π.
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#[cfg(feature = "no_float")]
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#[rhai_fn(name = "E")]
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pub fn e() -> Decimal {
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Decimal::E
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}
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/// Parse a string into a decimal number.
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///
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/// # Example
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///
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/// ```rhai
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/// let x = parse_float("123.456");
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///
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/// print(x); // prints 123.456
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/// ```
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#[cfg(feature = "no_float")]
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#[rhai_fn(return_raw)]
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pub fn parse_float(s: &str) -> RhaiResultOf<Decimal> {
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parse_decimal(s)
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}
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/// Return the sine of the decimal number in radians.
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pub fn sin(x: Decimal) -> Decimal {
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x.sin()
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}
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/// Return the cosine of the decimal number in radians.
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pub fn cos(x: Decimal) -> Decimal {
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x.cos()
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}
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/// Return the tangent of the decimal number in radians.
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pub fn tan(x: Decimal) -> Decimal {
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x.tan()
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}
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/// Return the square root of the decimal number.
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#[rhai_fn(return_raw)]
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pub fn sqrt(x: Decimal) -> RhaiResultOf<Decimal> {
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x.sqrt()
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.ok_or_else(|| make_err(format!("Error taking the square root of {x}")))
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}
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/// Return the exponential of the decimal number.
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#[rhai_fn(return_raw)]
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pub fn exp(x: Decimal) -> RhaiResultOf<Decimal> {
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if cfg!(not(feature = "unchecked")) {
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x.checked_exp()
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.ok_or_else(|| make_err(format!("Exponential overflow: e ** {x}")))
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} else {
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Ok(x.exp())
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}
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}
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/// Return the natural log of the decimal number.
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#[rhai_fn(return_raw)]
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pub fn ln(x: Decimal) -> RhaiResultOf<Decimal> {
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if cfg!(not(feature = "unchecked")) {
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x.checked_ln()
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.ok_or_else(|| make_err(format!("Error taking the natural log of {x}")))
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} else {
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Ok(x.ln())
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}
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}
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/// Return the log of the decimal number with base 10.
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#[rhai_fn(name = "log", return_raw)]
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pub fn log10(x: Decimal) -> RhaiResultOf<Decimal> {
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if cfg!(not(feature = "unchecked")) {
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x.checked_log10()
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.ok_or_else(|| make_err(format!("Error taking the log of {x}")))
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} else {
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Ok(x.log10())
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}
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}
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/// Return the largest whole number less than or equals to the decimal number.
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#[rhai_fn(name = "floor", get = "floor")]
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pub fn floor(x: Decimal) -> Decimal {
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x.floor()
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}
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/// Return the smallest whole number larger than or equals to the decimal number.
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#[rhai_fn(name = "ceiling", get = "ceiling")]
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pub fn ceiling(x: Decimal) -> Decimal {
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x.ceil()
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}
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/// Return the nearest whole number closest to the decimal number.
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/// Always round mid-point towards the closest even number.
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#[rhai_fn(name = "round", get = "round")]
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pub fn round(x: Decimal) -> Decimal {
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x.round()
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}
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/// Round the decimal number to the specified number of `digits` after the decimal point and return it.
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/// Always round mid-point towards the closest even number.
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#[rhai_fn(name = "round", return_raw)]
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pub fn round_dp(x: Decimal, digits: INT) -> RhaiResultOf<Decimal> {
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if cfg!(not(feature = "unchecked")) {
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if digits < 0 {
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return Err(make_err(format!(
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"Invalid number of digits for rounding: {digits}"
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)));
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}
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if cfg!(not(feature = "only_i32")) && digits > (u32::MAX as INT) {
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return Ok(x);
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}
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}
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#[allow(clippy::cast_sign_loss)]
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Ok(x.round_dp(digits as u32))
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}
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/// Round the decimal number to the specified number of `digits` after the decimal point and return it.
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/// Always round away from zero.
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#[rhai_fn(return_raw)]
|
|
pub fn round_up(x: Decimal, digits: INT) -> RhaiResultOf<Decimal> {
|
|
if cfg!(not(feature = "unchecked")) {
|
|
if digits < 0 {
|
|
return Err(make_err(format!(
|
|
"Invalid number of digits for rounding: {digits}"
|
|
)));
|
|
}
|
|
if cfg!(not(feature = "only_i32")) && digits > (u32::MAX as INT) {
|
|
return Ok(x);
|
|
}
|
|
}
|
|
|
|
#[allow(clippy::cast_sign_loss)]
|
|
Ok(x.round_dp_with_strategy(digits as u32, RoundingStrategy::AwayFromZero))
|
|
}
|
|
/// Round the decimal number to the specified number of `digits` after the decimal point and return it.
|
|
/// Always round towards zero.
|
|
#[rhai_fn(return_raw)]
|
|
pub fn round_down(x: Decimal, digits: INT) -> RhaiResultOf<Decimal> {
|
|
if cfg!(not(feature = "unchecked")) {
|
|
if digits < 0 {
|
|
return Err(make_err(format!(
|
|
"Invalid number of digits for rounding: {digits}"
|
|
)));
|
|
}
|
|
if cfg!(not(feature = "only_i32")) && digits > (u32::MAX as INT) {
|
|
return Ok(x);
|
|
}
|
|
}
|
|
|
|
#[allow(clippy::cast_sign_loss)]
|
|
Ok(x.round_dp_with_strategy(digits as u32, RoundingStrategy::ToZero))
|
|
}
|
|
/// Round the decimal number to the specified number of `digits` after the decimal point and return it.
|
|
/// Always round mid-points away from zero.
|
|
#[rhai_fn(return_raw)]
|
|
pub fn round_half_up(x: Decimal, digits: INT) -> RhaiResultOf<Decimal> {
|
|
if cfg!(not(feature = "unchecked")) {
|
|
if digits < 0 {
|
|
return Err(make_err(format!(
|
|
"Invalid number of digits for rounding: {digits}"
|
|
)));
|
|
}
|
|
if cfg!(not(feature = "only_i32")) && digits > (u32::MAX as INT) {
|
|
return Ok(x);
|
|
}
|
|
}
|
|
|
|
#[allow(clippy::cast_sign_loss)]
|
|
Ok(x.round_dp_with_strategy(digits as u32, RoundingStrategy::MidpointAwayFromZero))
|
|
}
|
|
/// Round the decimal number to the specified number of `digits` after the decimal point and return it.
|
|
/// Always round mid-points towards zero.
|
|
#[rhai_fn(return_raw)]
|
|
pub fn round_half_down(x: Decimal, digits: INT) -> RhaiResultOf<Decimal> {
|
|
if cfg!(not(feature = "unchecked")) {
|
|
if digits < 0 {
|
|
return Err(make_err(format!(
|
|
"Invalid number of digits for rounding: {digits}"
|
|
)));
|
|
}
|
|
if cfg!(not(feature = "only_i32")) && digits > (u32::MAX as INT) {
|
|
return Ok(x);
|
|
}
|
|
}
|
|
|
|
#[allow(clippy::cast_sign_loss)]
|
|
Ok(x.round_dp_with_strategy(digits as u32, RoundingStrategy::MidpointTowardZero))
|
|
}
|
|
/// Convert the decimal number into an integer.
|
|
#[rhai_fn(return_raw)]
|
|
pub fn to_int(x: Decimal) -> RhaiResultOf<INT> {
|
|
let n = x.to_i64().and_then(|n| {
|
|
#[cfg(feature = "only_i32")]
|
|
return if n > (INT::MAX as i64) || n < (INT::MIN as i64) {
|
|
None
|
|
} else {
|
|
Some(n as i32)
|
|
};
|
|
|
|
#[cfg(not(feature = "only_i32"))]
|
|
return Some(n);
|
|
});
|
|
|
|
n.map_or_else(
|
|
|| {
|
|
Err(
|
|
ERR::ErrorArithmetic(format!("Integer overflow: to_int({x})"), Position::NONE)
|
|
.into(),
|
|
)
|
|
},
|
|
|n| Ok(n),
|
|
)
|
|
}
|
|
/// Return the integral part of the decimal number.
|
|
#[rhai_fn(name = "int", get = "int")]
|
|
pub fn int(x: Decimal) -> Decimal {
|
|
x.trunc()
|
|
}
|
|
/// Return the fractional part of the decimal number.
|
|
#[rhai_fn(name = "fraction", get = "fraction")]
|
|
pub fn fraction(x: Decimal) -> Decimal {
|
|
x.fract()
|
|
}
|
|
/// Parse a string into a decimal number.
|
|
///
|
|
/// # Example
|
|
///
|
|
/// ```rhai
|
|
/// let x = parse_decimal("123.456");
|
|
///
|
|
/// print(x); // prints 123.456
|
|
/// ```
|
|
#[rhai_fn(return_raw)]
|
|
pub fn parse_decimal(string: &str) -> RhaiResultOf<Decimal> {
|
|
Decimal::from_str(string)
|
|
.or_else(|_| Decimal::from_scientific(string))
|
|
.map_err(|err| {
|
|
ERR::ErrorArithmetic(
|
|
format!("Error parsing decimal number '{string}': {err}"),
|
|
Position::NONE,
|
|
)
|
|
.into()
|
|
})
|
|
}
|
|
|
|
/// Convert the floating-point number to decimal.
|
|
#[cfg(not(feature = "no_float"))]
|
|
#[rhai_fn(name = "to_decimal", return_raw)]
|
|
pub fn f32_to_decimal(x: f32) -> RhaiResultOf<Decimal> {
|
|
Decimal::try_from(x).map_err(|_| {
|
|
ERR::ErrorArithmetic(
|
|
format!("Cannot convert to Decimal: to_decimal({x})"),
|
|
Position::NONE,
|
|
)
|
|
.into()
|
|
})
|
|
}
|
|
/// Convert the floating-point number to decimal.
|
|
#[cfg(not(feature = "no_float"))]
|
|
#[rhai_fn(name = "to_decimal", return_raw)]
|
|
pub fn f64_to_decimal(x: f64) -> RhaiResultOf<Decimal> {
|
|
Decimal::try_from(x).map_err(|_| {
|
|
ERR::ErrorArithmetic(
|
|
format!("Cannot convert to Decimal: to_decimal({x})"),
|
|
Position::NONE,
|
|
)
|
|
.into()
|
|
})
|
|
}
|
|
/// Convert the decimal number to floating-point.
|
|
#[cfg(not(feature = "no_float"))]
|
|
#[rhai_fn(return_raw)]
|
|
pub fn to_float(x: Decimal) -> RhaiResultOf<FLOAT> {
|
|
FLOAT::try_from(x).map_err(|_| {
|
|
ERR::ErrorArithmetic(
|
|
format!("Cannot convert to floating-point: to_float({x})"),
|
|
Position::NONE,
|
|
)
|
|
.into()
|
|
})
|
|
}
|
|
}
|
|
|
|
#[cfg(not(feature = "no_float"))]
|
|
gen_conversion_as_functions!(basic_to_float => to_float (INT) -> FLOAT);
|
|
|
|
#[cfg(not(feature = "no_float"))]
|
|
#[cfg(not(feature = "only_i32"))]
|
|
#[cfg(not(feature = "only_i64"))]
|
|
gen_conversion_as_functions!(numbers_to_float => to_float (i8, u8, i16, u16, i32, u32, i64, u64) -> FLOAT);
|
|
|
|
#[cfg(not(feature = "no_float"))]
|
|
#[cfg(not(feature = "only_i32"))]
|
|
#[cfg(not(feature = "only_i64"))]
|
|
#[cfg(not(target_family = "wasm"))]
|
|
|
|
gen_conversion_as_functions!(num_128_to_float => to_float (i128, u128) -> FLOAT);
|
|
|
|
gen_conversion_as_functions!(basic_to_int => to_int (char) -> INT);
|
|
|
|
#[cfg(not(feature = "only_i32"))]
|
|
#[cfg(not(feature = "only_i64"))]
|
|
gen_conversion_as_functions!(numbers_to_int => to_int (i8, u8, i16, u16, i32, u32, i64, u64) -> INT);
|
|
|
|
#[cfg(not(feature = "only_i32"))]
|
|
#[cfg(not(feature = "only_i64"))]
|
|
#[cfg(not(target_family = "wasm"))]
|
|
|
|
gen_conversion_as_functions!(num_128_to_int => to_int (i128, u128) -> INT);
|
|
|
|
#[cfg(feature = "decimal")]
|
|
gen_conversion_into_functions!(basic_to_decimal => to_decimal (INT) -> Decimal);
|
|
|
|
#[cfg(feature = "decimal")]
|
|
#[cfg(not(feature = "only_i32"))]
|
|
#[cfg(not(feature = "only_i64"))]
|
|
gen_conversion_into_functions!(numbers_to_decimal => to_decimal (i8, u8, i16, u16, i32, u32, i64, u64) -> Decimal);
|