Module Name: src
Committed By: isaki
Date: Fri Mar 22 13:46:38 UTC 2013
Modified Files:
src/sys/arch/m68k/fpe: fpu_implode.c
Log Message:
Fix fpu_ftox().
Update not only exponential but also mantissa when an integer part
becomes 2 by rounding up. Without this fix, the extended precision
value becomes 0.0 because mantissa (including explicit integer bit)
is all-zero.
To generate a diff of this commit:
cvs rdiff -u -r1.13 -r1.14 src/sys/arch/m68k/fpe/fpu_implode.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/m68k/fpe/fpu_implode.c
diff -u src/sys/arch/m68k/fpe/fpu_implode.c:1.13 src/sys/arch/m68k/fpe/fpu_implode.c:1.14
--- src/sys/arch/m68k/fpe/fpu_implode.c:1.13 Tue Mar 19 09:17:17 2013
+++ src/sys/arch/m68k/fpe/fpu_implode.c Fri Mar 22 13:46:38 2013
@@ -1,4 +1,4 @@
-/* $NetBSD: fpu_implode.c,v 1.13 2013/03/19 09:17:17 isaki Exp $ */
+/* $NetBSD: fpu_implode.c,v 1.14 2013/03/22 13:46:38 isaki Exp $ */
/*
* Copyright (c) 1992, 1993
@@ -46,7 +46,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: fpu_implode.c,v 1.13 2013/03/19 09:17:17 isaki Exp $");
+__KERNEL_RCSID(0, "$NetBSD: fpu_implode.c,v 1.14 2013/03/22 13:46:38 isaki Exp $");
#include <sys/types.h>
#include <sys/systm.h>
@@ -433,8 +433,10 @@ fpu_ftox(struct fpemu *fe, struct fpn *f
#if (FP_NMANT - FP_NG - EXT_FRACBITS) > 0
(void) fpu_shr(fp, FP_NMANT - FP_NG - EXT_FRACBITS);
#endif
- if (fpu_round(fe, fp) && fp->fp_mant[0] == EXT_EXPLICIT2)
+ if (fpu_round(fe, fp) && fp->fp_mant[0] == EXT_EXPLICIT2) {
exp++;
+ fpu_shr(fp, 1);
+ }
if (exp >= EXT_EXP_INFNAN) {
fe->fe_fpsr |= FPSR_OPERR | FPSR_INEX2 | FPSR_OVFL;
if (toinf(fe, sign)) {
