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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */ |
| 2 | /* @(#)s_ldexp.c 5.1 93/09/24 */ |
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| 3 | /* |
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| 4 | * ==================================================== |
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| 5 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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| 6 | * |
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| 7 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
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| 8 | * Permission to use, copy, modify, and distribute this |
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| 9 | * software is freely granted, provided that this notice |
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| 10 | * is preserved. |
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| 11 | * ==================================================== |
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| 12 | */ |
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| 13 | |||
| 14 | #if defined(LIBM_SCCS) && !defined(lint) |
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| 15 | static char rcsid[] = "$Id: s_ldexp.c,v 1.4 1994/08/10 20:32:37 jtc Exp $"; |
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| 16 | #endif |
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| 17 | |||
| 18 | #include "math.h" |
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| 19 | #include "math_private.h" |
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| 20 | #include |
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| 21 | |||
| 22 | #ifdef __STDC__ |
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| 23 | double ldexp(double value, int exp) |
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| 24 | #else |
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| 25 | double ldexp(value, exp) |
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| 26 | double value; int exp; |
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| 27 | #endif |
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| 28 | { |
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| 29 | if(!finite(value)||value==0.0) return value; |
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| 30 | value = scalbn(value,exp); |
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| 31 | if(!finite(value)||value==0.0) errno = ERANGE; |
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| 32 | return value; |
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| 33 | } |