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Diffstat (limited to 'src/math/s_truncf.c')
-rw-r--r-- | src/math/s_truncf.c | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/src/math/s_truncf.c b/src/math/s_truncf.c deleted file mode 100644 index c253e62b..00000000 --- a/src/math/s_truncf.c +++ /dev/null @@ -1,50 +0,0 @@ -/* @(#)s_floor.c 5.1 93/09/24 */ -/* - * ==================================================== - * 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. - * ==================================================== - */ - -/* - * truncf(x) - * Return x rounded toward 0 to integral value - * Method: - * Bit twiddling. - * Exception: - * Inexact flag raised if x not equal to truncf(x). - */ - -#include <math.h> -#include "math_private.h" - -static const float huge = 1.0e30F; - -float -truncf(float x) -{ - int32_t i0,j0; - uint32_t i; - GET_FLOAT_WORD(i0,x); - j0 = ((i0>>23)&0xff)-0x7f; - if(j0<23) { - if(j0<0) { /* raise inexact if x != 0 */ - if(huge+x>0.0F) /* |x|<1, so return 0*sign(x) */ - i0 &= 0x80000000; - } else { - i = (0x007fffff)>>j0; - if((i0&i)==0) return x; /* x is integral */ - if(huge+x>0.0F) /* raise inexact flag */ - i0 &= (~i); - } - } else { - if(j0==0x80) return x+x; /* inf or NaN */ - else return x; /* x is integral */ - } - SET_FLOAT_WORD(x,i0); - return x; -} |