Initial project import

tools/v/vlib/strconv/ftoa.c.v

@@ -0,0 +1,47 @@
+module strconv
+
+/*
+f32/f64 ftoa functions
+
+Copyright (c) 2019-2024 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 8 digits after the dot.
+// Example: assert strconv.ftoa_long_32(0.1234567901) == '0.12345679'
+@[inline]
+pub fn ftoa_long_32(f f32) string {
+	return f32_to_str_l(f)
+}