fad231b960
this is silly, but it makes apps that read binary junk and interpret it as ld80 "safer", and it gets gnulib to stop replacing printf...
30 lines
759 B
C
30 lines
759 B
C
#include "libm.h"
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#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
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#elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
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int __fpclassifyl(long double x)
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{
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union ldshape u = { x };
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int e = u.bits.exp;
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if (!e) {
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if (u.bits.m >> 63) return FP_NAN;
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else if (u.bits.m) return FP_SUBNORMAL;
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else return FP_ZERO;
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}
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if (e == 0x7fff)
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return u.bits.m & (uint64_t)-1>>1 ? FP_NAN : FP_INFINITE;
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return u.bits.m & (uint64_t)1<<63 ? FP_NORMAL : FP_NAN;
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}
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#elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384
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int __fpclassifyl(long double x)
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{
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union ldshape u = { x };
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int e = u.bits.exp;
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if (!e)
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return u.bits.mlo | u.bits.mhi ? FP_SUBNORMAL : FP_ZERO;
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if (e == 0x7fff)
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return u.bits.mlo | u.bits.mhi ? FP_NAN : FP_INFINITE;
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return FP_NORMAL;
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}
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#endif
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