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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libm/] [math/] [wf_exp2.c] - Rev 262
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/* wf_exp2.c -- float version of w_exp2.c. * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. */ /* * ==================================================== * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this * software is freely granted, provided that this notice * is preserved. * ==================================================== */ /* * wrapper exp2f(x) */ #include "fdlibm.h" #include <errno.h> #include <math.h> #ifdef __STDC__ float exp2f(float x) /* wrapper exp2f */ #else float exp2f(x) /* wrapper exp2f */ float x; #endif { return powf(2.0, x); } #ifdef _DOUBLE_IS_32BITS #ifdef __STDC__ double exp2(double x) #else double exp2(x) double x; #endif { return (double) exp2f((float) x); } #endif /* defined(_DOUBLE_IS_32BITS) */
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