2020-06-15 14:18:57 +00:00
|
|
|
#ifndef COSMOPOLITAN_LIBC_NEXGEN32E_BSF_H_
|
|
|
|
|
#define COSMOPOLITAN_LIBC_NEXGEN32E_BSF_H_
|
|
|
|
|
#if !(__ASSEMBLER__ + __LINKER__ + 0)
|
|
|
|
|
COSMOPOLITAN_C_START_
|
|
|
|
|
|
2021-08-10 20:38:27 +00:00
|
|
|
int bsf(int) pureconst;
|
|
|
|
|
int bsfl(long) pureconst;
|
|
|
|
|
int bsfll(long long) pureconst;
|
Import C++ Standard Template Library
You can now use the hardest fastest and most dangerous language there is
with Cosmopolitan. So far about 75% of LLVM libcxx has been added. A few
breaking changes needed to be made to help this go smoothly.
- Rename nothrow to dontthrow
- Rename nodiscard to dontdiscard
- Add some libm functions, e.g. lgamma, nan, etc.
- Change intmax_t from int128 to int64 like everything else
- Introduce %jjd formatting directive for int128_t
- Introduce strtoi128(), strtou128(), etc.
- Rename bsrmax() to bsr128()
Some of the templates that should be working currently are std::vector,
std::string, std::map, std::set, std::deque, etc.
2022-03-22 12:51:41 +00:00
|
|
|
int bsf128(uintmax_t) pureconst;
|
2020-08-27 06:08:08 +00:00
|
|
|
|
2021-06-15 13:24:46 +00:00
|
|
|
#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
|
|
|
|
|
#define bsf(u) \
|
|
|
|
|
({ \
|
|
|
|
|
unsigned BiTs; \
|
|
|
|
|
asm("bsf\t%0,%0" : "=r"(BiTs) : "0"((unsigned)(u)) : "cc"); \
|
|
|
|
|
BiTs; \
|
|
|
|
|
})
|
|
|
|
|
#define bsfl(u) \
|
|
|
|
|
({ \
|
|
|
|
|
unsigned long BiTs; \
|
|
|
|
|
asm("bsf\t%0,%0" : "=r"(BiTs) : "0"((unsigned long)(u)) : "cc"); \
|
|
|
|
|
(unsigned)BiTs; \
|
|
|
|
|
})
|
|
|
|
|
#define bsfll(u) bsfl(u)
|
2020-12-05 20:20:41 +00:00
|
|
|
#endif
|
2020-08-25 11:23:25 +00:00
|
|
|
|
2020-06-15 14:18:57 +00:00
|
|
|
COSMOPOLITAN_C_END_
|
|
|
|
|
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
|
|
|
|
|
#endif /* COSMOPOLITAN_LIBC_NEXGEN32E_BSF_H_ */
|
