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make math.h more c++-friendly

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Rich Felker 2012-03-30 23:33:00 -04:00
parent 7eabe8e690
commit 93a18a15e4
1 changed files with 5 additions and 2 deletions
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7
include/math.h
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@ -41,8 +41,11 @@ int __fpclassify(double);
int __fpclassifyf(float);
int __fpclassifyl(long double);
#define __FLOAT_BITS(f) (((union { float __f; __uint32_t __i; }){ (float)(f) }).__i)
#define __DOUBLE_BITS(f) (((union { double __f; __uint64_t __i; }){ (double)(f) }).__i)
union __float_repr { float __f; __uint32_t __i; };
union __double_repr { double __f; __uint64_t __i; };
#define __FLOAT_BITS(f) (((union __float_repr){ (float)(f) }).__i)
#define __DOUBLE_BITS(f) (((union __double_repr){ (double)(f) }).__i)
#define fpclassify(x) ( \
sizeof(x) == sizeof(float) ? __fpclassifyf(x) : \