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Diffstat (limited to 'lib/msun/src/s_copysignf.c')
-rw-r--r-- | lib/msun/src/s_copysignf.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/lib/msun/src/s_copysignf.c b/lib/msun/src/s_copysignf.c new file mode 100644 index 0000000..ae0980f --- /dev/null +++ b/lib/msun/src/s_copysignf.c @@ -0,0 +1,41 @@ +/* s_copysignf.c -- float version of s_copysign.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. + * ==================================================== + */ + +#ifndef lint +static char rcsid[] = "$FreeBSD$"; +#endif + +/* + * copysignf(float x, float y) + * copysignf(x,y) returns a value with the magnitude of x and + * with the sign bit of y. + */ + +#include "math.h" +#include "math_private.h" + +#ifdef __STDC__ + float copysignf(float x, float y) +#else + float copysignf(x,y) + float x,y; +#endif +{ + u_int32_t ix,iy; + GET_FLOAT_WORD(ix,x); + GET_FLOAT_WORD(iy,y); + SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000)); + return x; +} |