mirror of
https://github.com/jart/cosmopolitan.git
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fa20edc44d
- Remove most __ASSEMBLER__ __LINKER__ ifdefs - Rename libc/intrin/bits.h to libc/serialize.h - Block pthread cancelation in fchmodat() polyfill - Remove `clang-format off` statements in third_party
13 lines
467 B
C
13 lines
467 B
C
#ifndef COSMOPOLITAN_LIBC_TIME_CLOCKSTONANOS_INTERNAL_H_
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#define COSMOPOLITAN_LIBC_TIME_CLOCKSTONANOS_INTERNAL_H_
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COSMOPOLITAN_C_START_
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static inline uint64_t ClocksToNanos(uint64_t x, uint64_t y) {
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// approximation of round(x*.323018) which is usually
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// the ratio between inva rdtsc ticks and nanoseconds
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uint128_t difference = x - y;
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return (difference * 338709) >> 20;
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}
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_TIME_CLOCKSTONANOS_INTERNAL_H_ */
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