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Add conversions between Decimal and FLOAT.

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This commit is contained in:
Stephen Chung 2021-03-22 15:16:01 +08:00
parent 22ff68cdc9
commit 42d7736d94
1 changed files with 35 additions and 0 deletions
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35
src/packages/math_basic.rs
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@ -304,6 +304,7 @@ mod float_functions {
#[cfg(feature = "decimal")]
#[export_module]
mod decimal_functions {
use crate::stdlib::convert::TryFrom;
use rust_decimal::{
prelude::{FromStr, RoundingStrategy},
Decimal,
@ -421,6 +422,40 @@ mod decimal_functions {
.into()
})
}
#[cfg(not(feature = "no_float"))]
pub mod float {
#[rhai_fn(name = "to_decimal", return_raw)]
pub fn f32_to_decimal(x: f32) -> Result<Decimal, Box<EvalAltResult>> {
Decimal::try_from(x).map_err(|_| {
EvalAltResult::ErrorArithmetic(
format!("Cannot convert to Decimal: to_decimal({})", x),
Position::NONE,
)
.into()
})
}
#[rhai_fn(name = "to_decimal", return_raw)]
pub fn f64_to_decimal(x: f64) -> Result<Decimal, Box<EvalAltResult>> {
Decimal::try_from(x).map_err(|_| {
EvalAltResult::ErrorArithmetic(
format!("Cannot convert to Decimal: to_decimal({})", x),
Position::NONE,
)
.into()
})
}
#[rhai_fn(return_raw)]
pub fn to_float(x: Decimal) -> Result<FLOAT, Box<EvalAltResult>> {
FLOAT::try_from(x).map_err(|_| {
EvalAltResult::ErrorArithmetic(
format!("Cannot convert to floating-point: to_float({})", x),
Position::NONE,
)
.into()
})
}
}
}
#[cfg(not(feature = "no_float"))]