1/*
2 * Copyright 2017 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef SkFloatToDecimal_DEFINED
9#define SkFloatToDecimal_DEFINED
10
11constexpr unsigned kMaximumSkFloatToDecimalLength = 49;
12
13/** \fn SkFloatToDecimal
14 Convert a float into a decimal string.
15
16 The resulting string will be in the form `[-]?([0-9]*\.)?[0-9]+` (It does
17 not use scientific notation.) and `sscanf(output, "%f", &x)` will return
18 the original value if the value is finite. This function accepts all
19 possible input values.
20
21 INFINITY and -INFINITY are rounded to FLT_MAX and -FLT_MAX.
22
23 NAN values are converted to 0.
24
25 This function will always add a terminating '\0' to the output.
26
27 @param value Any floating-point number
28 @param output The buffer to write the string into. Must be non-null.
29
30 @return strlen(output)
31*/
32unsigned SkFloatToDecimal(float value, char output[kMaximumSkFloatToDecimalLength]);
33
34#endif // SkFloatToDecimal_DEFINED
35