diff options
Diffstat (limited to 'src/dtoa.h')
| -rw-r--r-- | src/dtoa.h | 14 |
1 files changed, 9 insertions, 5 deletions
@@ -32,13 +32,15 @@ namespace v8 { namespace internal { enum DtoaMode { - // 0.9999999999999999 becomes 0.1 + // Return the shortest correct representation. + // For example the output of 0.299999999999999988897 is (the less accurate but + // correct) 0.3. DTOA_SHORTEST, - // Fixed number of digits after the decimal point. + // Return a fixed number of digits after the decimal point. // For instance fixed(0.1, 4) becomes 0.1000 // If the input number is big, the output will be big. DTOA_FIXED, - // Fixed number of digits (independent of the decimal point). + // Return a fixed number of digits, no matter what the exponent is. DTOA_PRECISION }; @@ -72,8 +74,10 @@ static const int kBase10MaximalLength = 17; // which case the caller has to fill the missing digits with '0's. // Halfway cases are again rounded away from 0. // 'DoubleToAscii' expects the given buffer to be big enough to hold all digits -// and a terminating null-character. -bool DoubleToAscii(double v, DtoaMode mode, int requested_digits, +// and a terminating null-character. In SHORTEST-mode it expects a buffer of +// at least kBase10MaximalLength + 1. Otherwise, the size of the output is +// limited to requested_digits digits plus the null terminator. +void DoubleToAscii(double v, DtoaMode mode, int requested_digits, Vector<char> buffer, int* sign, int* length, int* point); } } // namespace v8::internal |