diff options
Diffstat (limited to 'deps/icu-small/source/i18n/digitlst.cpp')
| -rw-r--r-- | deps/icu-small/source/i18n/digitlst.cpp | 50 |
1 files changed, 49 insertions, 1 deletions
diff --git a/deps/icu-small/source/i18n/digitlst.cpp b/deps/icu-small/source/i18n/digitlst.cpp index 10a3a5dca1..37760defd7 100644 --- a/deps/icu-small/source/i18n/digitlst.cpp +++ b/deps/icu-small/source/i18n/digitlst.cpp @@ -44,12 +44,15 @@ #include "digitinterval.h" #include "ucln_in.h" #include "umutex.h" +#include "double-conversion.h" #include <stdlib.h> #include <limits.h> #include <string.h> #include <stdio.h> #include <limits> +using icu::double_conversion::DoubleToStringConverter; + #if !defined(U_USE_STRTOD_L) # if U_PLATFORM_USES_ONLY_WIN32_API # define U_USE_STRTOD_L 1 @@ -850,8 +853,53 @@ DigitList::set(double source) } else { uprv_strcpy(rep,"inf"); } + } else if (uprv_isNaN(source)) { + uprv_strcpy(rep, "NaN"); } else { - sprintf(rep, "%+1.*e", MAX_DBL_DIGITS - 1, source); + bool sign; + int32_t length; + int32_t point; + DoubleToStringConverter::DoubleToAscii( + source, + DoubleToStringConverter::DtoaMode::SHORTEST, + 0, + rep + 1, + sizeof(rep), + &sign, + &length, + &point + ); + + // Convert the raw buffer into a string for decNumber + int32_t power = point - length; + if (sign) { + rep[0] = '-'; + } else { + rep[0] = '0'; + } + length++; + rep[length++] = 'E'; + if (power < 0) { + rep[length++] = '-'; + power = -power; + } else { + rep[length++] = '+'; + } + if (power < 10) { + rep[length++] = power + '0'; + } else if (power < 100) { + rep[length++] = (power / 10) + '0'; + rep[length++] = (power % 10) + '0'; + } else { + U_ASSERT(power < 1000); + rep[length + 2] = (power % 10) + '0'; + power /= 10; + rep[length + 1] = (power % 10) + '0'; + power /= 10; + rep[length] = power + '0'; + length += 3; + } + rep[length++] = 0; } U_ASSERT(uprv_strlen(rep) < sizeof(rep)); |