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Diffstat (limited to 'newlib/libm/math/wf_exp2.c')
| -rw-r--r-- | newlib/libm/math/wf_exp2.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/newlib/libm/math/wf_exp2.c b/newlib/libm/math/wf_exp2.c new file mode 100644 index 000000000..944031405 --- /dev/null +++ b/newlib/libm/math/wf_exp2.c @@ -0,0 +1,46 @@ +/* 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) */ |