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numeric.c: suppress warning

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* numeric.c (DEFINE_INT_SQRT): suppress a type-limits warning
  where int is always smaller than double.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57739 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-02-28 01:10:38 +00:00
parent c1138f066a
commit 0e099878eb
1 changed files with 15 additions and 4 deletions
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19
numeric.c
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@ -5132,8 +5132,7 @@ int_truncate(int argc, VALUE* argv, VALUE num)
rettype \
prefix##_isqrt(argtype n) \
{ \
if (sizeof(n) * CHAR_BIT > DBL_MANT_DIG && \
n >= ((argtype)1UL << DBL_MANT_DIG)) { \
if (!argtype##_IN_DOUBLE_P(n)) { \
unsigned int b = bit_length(n); \
argtype t; \
rettype x = (rettype)(n >> (b/2+1)); \
@ -5144,8 +5143,20 @@ prefix##_isqrt(argtype n) \
return (rettype)sqrt((double)n); \
}
DEFINE_INT_SQRT(unsigned long, rb_ulong, unsigned long)
#if SIZEOF_BDIGIT*2 > SIZEOF_LONG
#if SIZEOF_LONG*CHAR_BIT > DBL_MANT_DIG
# define RB_ULONG_IN_DOUBLE_P(n) ((n) < (1UL << DBL_MANT_DIG))
#else
# define RB_ULONG_IN_DOUBLE_P(n) 1
#endif
#define RB_ULONG unsigned long
DEFINE_INT_SQRT(unsigned long, rb_ulong, RB_ULONG)
#if 2*SIZEOF_BDIGIT > SIZEOF_LONG
# if 2*SIZEOF_BDIGIT*CHAR_BIT > DBL_MANT_DIG
# define BDIGIT_DBL_IN_DOUBLE_P(n) ((n) < ((BDIGIT_DBL)1UL << DBL_MANT_DIG))
# else
# define BDIGIT_DBL_IN_DOUBLE_P(n) 1
# endif
DEFINE_INT_SQRT(BDIGIT, rb_bdigit_dbl, BDIGIT_DBL)
#endif