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28 lines
739 B
28 lines
739 B
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/* @(#)s_ldexp.c 1.3 95/01/18 */ |
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/* |
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* ==================================================== |
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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* |
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* Developed at SunSoft, a Sun Microsystems, Inc. business. |
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* Permission to use, copy, modify, and distribute this |
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* software is freely granted, provided that this notice |
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* is preserved. |
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* ==================================================== |
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*/ |
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#include "fdlibm.h" |
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#include <errno.h> |
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#ifdef __STDC__ |
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double ieee_ldexp(double value, int exp) |
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#else |
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double ieee_ldexp(value, exp) |
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double value; int exp; |
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#endif |
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{ |
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if(!ieee_finite(value)||value==0.0) return value; |
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value = ieee_scalbn(value,exp); |
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if(!ieee_finite(value)||value==0.0) errno = ERANGE; |
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return value; |
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}
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