v/vlib/strconv/ftoa.c.v

module strconv

/*
f32/f64 ftoa functions

Copyright (c) 2019-2023 Dario Deledda. All rights reserved.
Use of this source code is governed by an MIT license
that can be found in the LICENSE file.

This file contains the f32/f64 ftoa functions

These functions are based on the work of:
Publication:PLDI 2018: Proceedings of the 39th ACM SIGPLAN
Conference on Programming Language Design and ImplementationJune 2018
Pages 270–282 https://doi.org/10.1145/3192366.3192369

inspired by the Go version here:
https://github.com/cespare/ryu/tree/ba56a33f39e3bbbfa409095d0f9ae168a595feea
*/

// ftoa_64 returns a string in scientific notation with max 17 digits after the dot.
//
// Example: assert strconv.ftoa_64(123.1234567891011121) == '1.2312345678910111e+02'
[inline]
pub fn ftoa_64(f f64) string {
	return f64_to_str(f, 17)
}

// ftoa_long_64 returns `f` as a `string` in decimal notation with a maximum of 17 digits after the dot.
//
// Example: assert strconv.f64_to_str_l(123.1234567891011121) == '123.12345678910111'
[inline]
pub fn ftoa_long_64(f f64) string {
	return f64_to_str_l(f)
}

// ftoa_32 returns a `string` in scientific notation with max 8 digits after the dot.
//
// Example: assert strconv.ftoa_32(34.1234567) == '3.4123455e+01'
[inline]
pub fn ftoa_32(f f32) string {
	return f32_to_str(f, 8)
}

// ftoa_long_32 returns `f` as a `string` in decimal notation with a maximum of 6 digits after the dot.
//
// Example: assert strconv.ftoa_long_32(34.1234567) == '34.12346'
[inline]
pub fn ftoa_long_32(f f32) string {
	return f32_to_str_l(f)
}