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32 lines
698 B
C
32 lines
698 B
C
/*
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* wrapper exp2l(x)
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*/
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#include <float.h>
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#include "math.h"
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#include "math_private.h"
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static const long double o_threshold = (long double) LDBL_MAX_EXP;
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static const long double u_threshold
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= (long double) (LDBL_MIN_EXP - LDBL_MANT_DIG - 1);
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long double
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__exp2l (long double x) /* wrapper exp2l */
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{
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#ifdef _IEEE_LIBM
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return __ieee754_exp2l (x);
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#else
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long double z;
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z = __ieee754_exp2l (x);
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if (_LIB_VERSION != _IEEE_ && __finitel (x))
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{
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if (x > o_threshold)
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return __kernel_standard (x, x, 244); /* exp2l overflow */
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else if (x <= u_threshold)
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return __kernel_standard (x, x, 245); /* exp2l underflow */
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}
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return z;
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#endif
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}
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weak_alias (__exp2l, exp2l)
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