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39bf41f4eb
- Python static hello world now 1.8mb
- Python static fully loaded now 10mb
- Python HTTPS client now uses MbedTLS
- Python REPL now completes import stmts
- Increase stack size for Python for now
- Begin synthesizing posixpath and ntpath
- Restore Python \N{UNICODE NAME} support
- Restore Python NFKD symbol normalization
- Add optimized code path for Intel SHA-NI
- Get more Python unit tests passing faster
- Get Python help() pagination working on NT
- Python hashlib now supports MbedTLS PBKDF2
- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
- Provide privileged __printf() for error code
- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
- Show memory diagram on invalid access in MODE=dbg
- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands
25 lines
1 KiB
C
25 lines
1 KiB
C
#ifndef COSMOPOLITAN_LIBC_BITS_POPCNT_H_
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#define COSMOPOLITAN_LIBC_BITS_POPCNT_H_
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#include "libc/nexgen32e/x86feature.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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size_t _countbits(const void *, size_t);
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unsigned long popcnt(unsigned long) pureconst;
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#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
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#define popcnt(X) \
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(__builtin_constant_p(X) ? __builtin_popcountll(X) : ({ \
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unsigned long PoP = (X); \
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if (X86_HAVE(POPCNT)) { \
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asm("popcnt\t%0,%0" : "+r"(PoP) : /* no inputs */ : "cc"); \
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} else { \
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PoP = (popcnt)(PoP); \
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} \
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PoP; \
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}))
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#endif /* GNUC && !ANSI */
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_BITS_POPCNT_H_ */
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