| 1 | /* Optimizations by Ulrich Drepper <drepper@gmail.com>, 2011 */ |
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| 2 | /* |
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| 3 | * ==================================================== |
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| 4 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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| 5 | * |
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| 6 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
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| 7 | * Permission to use, copy, modify, and distribute this |
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| 8 | * software is freely granted, provided that this notice |
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| 9 | * is preserved. |
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| 10 | * ==================================================== |
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| 11 | */ |
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| 12 | |
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| 13 | /* |
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| 14 | * wrapper cosh(x) |
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| 15 | */ |
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| 16 | |
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| 17 | #include <math.h> |
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| 18 | #include <math_private.h> |
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| 19 | #include <math-svid-compat.h> |
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| 20 | #include <libm-alias-double.h> |
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| 21 | |
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| 22 | #if LIBM_SVID_COMPAT |
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| 23 | double |
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| 24 | __cosh (double x) |
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| 25 | { |
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| 26 | double z = __ieee754_cosh (x); |
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| 27 | if (__builtin_expect (!isfinite (z), 0) && isfinite (x) |
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| 28 | && _LIB_VERSION != _IEEE_) |
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| 29 | return __kernel_standard (x, x, 5); /* cosh overflow */ |
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| 30 | |
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| 31 | return z; |
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| 32 | } |
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| 33 | libm_alias_double (__cosh, cosh) |
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| 34 | #endif |
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| 35 | |
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