ftoa in V (#3831)

vlib/strconv/ftoa/ftoa.v

@@ -0,0 +1,40 @@
+/**********************************************************************
+*
+* f32/f64 ftoa functions
+*
+* Copyright (c) 2019-2020 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
+*
+**********************************************************************/
+module ftoa
+
+[inline]
+pub fn ftoa_64(f f64) string {
+	return f64_to_str(f,17)
+}
+
+[inline]
+pub fn ftoa_long_64(f f64) string {
+	return f64_to_str_l(f)
+}
+
+[inline]
+pub fn ftoa_32(f f32) string {
+	return f32_to_str(f,8)
+}
+
+[inline]
+pub fn ftoa_long_32(f f32) string {
+	return f32_to_str_l(f)
+}