kc3-lang/gnulib/lib/count-one-bits.c

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• Hash : 75588b6e
  Author :
  Date : 2013-10-06T23:43:43
  

  count-one-bits: port to MSC; support types wider than 64 bits
  
  The ideas behind the MSC port are stolen from Emacs.
  * lib/count-one-bits.c (popcount_support) [_MSC_VER]: New variable.
  * lib/count-one-bits.h: Include limits.h, for CHAR_BIT.
  Don't include verify.h: it's no longer needed, as types wider than
  64 bits are now supported.
  (COUNT_ONE_BITS_GENERIC): New macro.
  (popcount_supported) [_MSC_VER]: New inline function.
  (COUNT_ONE_BITS): Use it.  New arg MSC_BUILTIN, for better
  performance with MSC.  All uses changed.  Do not assume that TYPE
  has at most 64 bits.
  * modules/count-one-bits (Depends-on): Do not depend on 'verify'.
  

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• lib/count-one-bits.c

• #include <config.h>
  #define COUNT_ONE_BITS_INLINE _GL_EXTERN_INLINE
  #include "count-one-bits.h"
  
  #if 1500 <= _MSC_VER && (defined _M_IX86 || defined _M_X64)
  int popcount_support = -1;
  #endif
  

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