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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [native/] [fdlibm/] [w_exp.c] - Rev 774
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/* @(#)w_exp.c 1.4 04/04/22 */ /* * ==================================================== * Copyright (C) 2004 by Sun Microsystems, Inc. All rights reserved. * * Permission to use, copy, modify, and distribute this * software is freely granted, provided that this notice * is preserved. * ==================================================== */ /* * wrapper exp(x) */ #include "fdlibm.h" #ifdef __STDC__ static const double #else static double #endif o_threshold= 7.09782712893383973096e+02, /* 0x40862E42, 0xFEFA39EF */ u_threshold= -7.45133219101941108420e+02; /* 0xc0874910, 0xD52D3051 */ #ifdef __STDC__ double exp(double x) /* wrapper exp */ #else double exp(x) /* wrapper exp */ double x; #endif { #ifdef _IEEE_LIBM return __ieee754_exp(x); #else double z; z = __ieee754_exp(x); if(_LIB_VERSION == _IEEE_) return z; if(finite(x)) { if(x>o_threshold) return __kernel_standard(x,x,6); /* exp overflow */ else if(x<u_threshold) return __kernel_standard(x,x,7); /* exp underflow */ } return z; #endif }