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Add parse_int and parse_float.

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Stephen Chung
2020-09-23 12:00:03 +08:00
parent 035b9cb839
commit ed38b50490
6 changed files with 85 additions and 5 deletions
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23
doc/src/language/num-fn.md
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@@ -9,11 +9,11 @@ Integer Functions
The following standard functions (defined in the [`BasicMathPackage`][packages] but excluded if using a [raw `Engine`])
operate on `i8`, `i16`, `i32`, `i64`, `f32` and `f64` only:
| Function | Description |
| ------------ | ----------------------------------------------------------------------- |
| `abs` | absolute value |
| `sign` | returns -1 (`INT`) if the number is negative, +1 if positive, 0 if zero |
| [`to_float`] | converts an integer type to `FLOAT` |
| Function | No available under | Description |
| -------- | :----------------: | ---------------------------------------------------------------------- |
| `abs` | | absolute value |
| `sign` | | return -1 (`INT`) if the number is negative, +1 if positive, 0 if zero |
Floating-Point Functions
-----------------------
@@ -31,3 +31,16 @@ operate on `f64` only:
| Rounding | `floor`, `ceiling`, `round`, `int`, `fraction` methods and properties |
| Conversion | [`to_int`] |
| Testing | `is_nan`, `is_finite`, `is_infinite` methods and properties |
Conversion Functions
-------------------
The following standard functions (defined in the [`BasicMathPackage`][packages] but excluded if using a [raw `Engine`])
parse numbers:
| Function | No available under | Description |
| --------------- | :----------------: | -------------------------------------------------- |
| [`to_float`] | [`no_float`] | convert an integer type to `FLOAT` |
| [`parse_int`] | | convert a [string] to `INT` with an optional radix |
| [`parse_float`] | [`no_float`] | convert a [string] to `FLOAT` |