cosmopolitan/libc/fmt/divmod10.internal.h
Justine Tunney b45d50b690 Make improvements
- Fix build flakes
- Polyfill SIGWINCH on Windows
- Fix an execve issue on Windows
- Make strerror show more information
- Improve cmd.exe setup/teardown on Windows
- Support bracketed paste mode in Blinkenlights
- Show keyboard shortcuts in Blinkenlights status bar
- Fixed copy_file_range() and copyfile() w/ zip filesystem
- Size optimize GetDosArgv() to keep life.com 12kb in size
- Improve Blinkenlights ability to load weird ELF executables
- Fix program_executable_name and add GetInterpreterExecutableName
- Make Python in tiny mode fail better if docstrings are requested
- Update Python test exclusions in tiny* modes such as tinylinux
- Add bulletproof unbreakable kprintf() troubleshooting function
- Remove "oldskool" keyword from ape.S for virus scanners
- Fix issue that caused backtraces to not print sometimes
- Improve Blinkenlights serial uart character i/o
- Make clock_gettime() not clobber errno on xnu
- Improve sha256 cpuid check for old computers
- Integrate some bestline linenoise fixes
- Show runit process names better in htop
- Remove SIGPIPE from ShowCrashReports()
- Make realpath() not clobber errno
- Avoid attaching GDB on non-Linux
- Improve img.com example
2022-03-16 13:40:10 -07:00

26 lines
620 B
C

#ifndef COSMOPOLITAN_LIBC_FMT_DIVMOD10_H_
#define COSMOPOLITAN_LIBC_FMT_DIVMOD10_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
forceinline uint64_t DivMod10(uint64_t x, unsigned *r) {
#if defined(__STRICT_ANSI__) || !defined(__GNUC__) || \
(defined(__OPTIMIZE__) && !defined(__OPTIMIZE_SIZE__))
*r = x % 10;
return x / 10;
#else
uint128_t dw;
unsigned long long hi, rm;
dw = x;
dw *= 0xcccccccccccccccdull;
hi = dw >> 64;
hi >>= 3;
rm = hi;
rm += rm << 2;
rm += rm;
*r = x - rm;
return hi;
#endif
}
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_FMT_DIVMOD10_H_ */