summaryrefslogtreecommitdiff
path: root/src/math/s_truncf.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/math/s_truncf.c')
-rw-r--r--src/math/s_truncf.c50
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;
-}