[src/trunk]: src/lib/libm/src Deal with an implicit NBIT

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8dbc99de9b97
branches:  trunk
changeset: 784926:8dbc99de9b97
user:      matt <matt%NetBSD.org@localhost>
date:      Thu Feb 14 08:56:56 2013 +0000

description:
Deal with an implicit NBIT

diffstat:

 lib/libm/src/s_nextafterl.c |  10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diffs (39 lines):

diff -r 77daf2ad50a9 -r 8dbc99de9b97 lib/libm/src/s_nextafterl.c
--- a/lib/libm/src/s_nextafterl.c       Thu Feb 14 08:56:21 2013 +0000
+++ b/lib/libm/src/s_nextafterl.c       Thu Feb 14 08:56:56 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: s_nextafterl.c,v 1.2 2010/09/17 20:39:39 christos Exp $        */
+/*     $NetBSD: s_nextafterl.c,v 1.3 2013/02/14 08:56:56 matt Exp $    */
 
 /* @(#)s_nextafter.c 5.1 93/09/24 */
 /*
@@ -13,7 +13,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: s_nextafterl.c,v 1.2 2010/09/17 20:39:39 christos Exp $");
+__RCSID("$NetBSD: s_nextafterl.c,v 1.3 2013/02/14 08:56:56 matt Exp $");
 
 #include <float.h>
 #include <math.h>
@@ -24,6 +24,10 @@
 #error "Unsupported long double format"
 #endif
 
+#ifdef LDBL_IMPLICIT_NBIT
+#define        LDBL_NBIT       0
+#endif
+
 /*
  * IEEE functions
  *      nextafterl(x,y)
@@ -83,7 +87,9 @@
                return x+x;                     /* overflow  */
 
        if (ux.extu_exp == 0) {                 /* underflow */
+#ifndef LDBL_IMPLICIT_NBIT
                mask_nbit_l(ux);
+#endif
                t = ux.extu_ld * ux.extu_ld;
                if (t != ux.extu_ld)            /* raise underflow flag */
                        return ux.extu_ld;