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 11 namespace pdfium { 12 namespace skia { 13 14 constexpr unsigned kMaximumSkFloatToDecimalLength = 49; 15 16 /** \fn SkFloatToDecimal 17 Convert a float into a decimal string. 18 19 The resulting string will be in the form `[-]?([0-9]*\.)?[0-9]+` (It does 20 not use scientific notation.) and `sscanf(output, "%f", &x)` will return 21 the original value if the value is finite. This function accepts all 22 possible input values. 23 24 INFINITY and -INFINITY are rounded to FLT_MAX and -FLT_MAX. 25 26 NAN values are converted to 0. 27 28 This function will always add a terminating '\0' to the output. 29 30 @param value Any floating-point number 31 @param output The buffer to write the string into. Must be non-null. 32 33 @return strlen(output) 34 */ 35 unsigned SkFloatToDecimal(float value, char output[kMaximumSkFloatToDecimalLength]); 36 37 } // namespace skia 38 } // namespace pdfium 39 40 #endif // SkFloatToDecimal_DEFINED 41