summaryrefslogtreecommitdiffstats
path: root/libm/src/s_truncl.c
diff options
context:
space:
mode:
Diffstat (limited to 'libm/src/s_truncl.c')
-rw-r--r--libm/src/s_truncl.c68
1 files changed, 0 insertions, 68 deletions
diff --git a/libm/src/s_truncl.c b/libm/src/s_truncl.c
deleted file mode 100644
index 39926a5..0000000
--- a/libm/src/s_truncl.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * ====================================================
- * 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.
- * ====================================================
- *
- * From: @(#)s_floor.c 5.1 93/09/24
- */
-
-#ifndef lint
-static char rcsid[] = "$FreeBSD: src/lib/msun/src/s_truncl.c,v 1.4 2005/04/28 19:45:55 stefanf Exp $";
-#endif
-
-/*
- * truncl(x)
- * Return x rounded toward 0 to integral value
- * Method:
- * Bit twiddling.
- * Exception:
- * Inexact flag raised if x not equal to truncl(x).
- */
-
-#include <float.h>
-#include <math.h>
-#include <stdint.h>
-
-#include "fpmath.h"
-
-#ifdef LDBL_IMPLICIT_NBIT
-#define MANH_SIZE (LDBL_MANH_SIZE + 1)
-#else
-#define MANH_SIZE LDBL_MANH_SIZE
-#endif
-
-static const long double huge = 1.0e300;
-
-long double
-truncl(long double x)
-{
- union IEEEl2bits u = { .e = x };
- int e = u.bits.exp - LDBL_MAX_EXP + 1;
-
- if (e < MANH_SIZE - 1) {
- if (e < 0) { /* raise inexact if x != 0 */
- if (huge + x > 0.0)
- u.e = 0.0;
- } else {
- uint64_t m = ((1llu << MANH_SIZE) - 1) >> (e + 1);
- if (((u.bits.manh & m) | u.bits.manl) == 0)
- return (x); /* x is integral */
- if (huge + x > 0.0) { /* raise inexact flag */
- u.bits.manh &= ~m;
- u.bits.manl = 0;
- }
- }
- } else if (e < LDBL_MANT_DIG - 1) {
- uint64_t m = (uint64_t)-1 >> (64 - LDBL_MANT_DIG + e + 1);
- if ((u.bits.manl & m) == 0)
- return (x); /* x is integral */
- if (huge + x > 0.0) /* raise inexact flag */
- u.bits.manl &= ~m;
- }
- return (u.e);
-}