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29 lines
516 B
C
29 lines
516 B
C
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/*
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* wrapper log2l(X)
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*/
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#include "math.h"
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#include "math_private.h"
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long double
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__log2l (long double x) /* wrapper log2l */
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{
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#ifdef _IEEE_LIBM
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return __ieee754_log2l (x);
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#else
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long double z;
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z = __ieee754_log2l (x);
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if (_LIB_VERSION == _IEEE_ || __isnanl (x)) return z;
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if (x <= 0.0)
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{
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if (x == 0.0)
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return __kernel_standard (x, x, 248); /* log2l (0) */
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else
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return __kernel_standard (x, x, 249); /* log2l (x < 0) */
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}
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else
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return z;
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#endif
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}
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weak_alias (__log2l, log2l)
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