vendored/double-conversion/strtod.h

0001 // Copyright 2010 the V8 project authors. All rights reserved.
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0027
0028 #ifndef DOUBLE_CONVERSION_STRTOD_H_
0029 #define DOUBLE_CONVERSION_STRTOD_H_
0030
0031 #include "utils.h"
0032
0033 namespace arrow_vendored {
0034 namespace double_conversion {
0035
0036 // The buffer must only contain digits in the range [0-9]. It must not
0037 // contain a dot or a sign. It must not start with '0', and must not be empty.
0038 double Strtod(Vector<const char> buffer, int exponent);
0039
0040 // The buffer must only contain digits in the range [0-9]. It must not
0041 // contain a dot or a sign. It must not start with '0', and must not be empty.
0042 float Strtof(Vector<const char> buffer, int exponent);
0043
0044 // Same as Strtod, but assumes that 'trimmed' is already trimmed, as if run
0045 // through TrimAndCut. That is, 'trimmed' must have no leading or trailing
0046 // zeros, must not be a lone zero, and must not have 'too many' digits.
0047 double StrtodTrimmed(Vector<const char> trimmed, int exponent);
0048
0049 // Same as Strtof, but assumes that 'trimmed' is already trimmed, as if run
0050 // through TrimAndCut. That is, 'trimmed' must have no leading or trailing
0051 // zeros, must not be a lone zero, and must not have 'too many' digits.
0052 float StrtofTrimmed(Vector<const char> trimmed, int exponent);
0053
0054 inline Vector<const char> TrimTrailingZeros(Vector<const char> buffer) {
0055   for (int i = buffer.length() - 1; i >= 0; --i) {
0056     if (buffer[i] != '0') {
0057       return buffer.SubVector(0, i + 1);
0058     }
0059   }
0060   return Vector<const char>(buffer.start(), 0);
0061 }
0062
0063 }  // namespace double_conversion
0064 }  // namespace arrow_vendored
0065
0066 #endif  // DOUBLE_CONVERSION_STRTOD_H_