Bug 17032
| Summary: | strtod(3) floating exception | ||
|---|---|---|---|
| Product: | Base System | Reporter: | nobu <nobu> |
| Component: | alpha | Assignee: | robert |
| Status: | Closed FIXED | ||
| Severity: | Affects Only Me | ||
| Priority: | Normal | ||
| Version: | Unspecified | ||
| Hardware: | Any | ||
| OS: | Any | ||
I checked my send-pr alpha/17032 problem.
The problem live in src/lib/libc/stdlib/strtod.c source code.
The source code assume sizeof(long)==4, then bounded value make
to be exception.
Well, There is need fix to mach. Then I tried import from NetBSD
source code and hacked that. It seem to work.
Based NetBSD-current source as
$NetBSD: strtod.c,v 1.33 1999/11/26 07:39:45 msaitoh Exp $
and patched for FreeBSD are:
--- /tmp/strtod.c Tue Feb 29 15:49:07 2000
+++ strtod.c Tue Feb 29 16:11:36 2000
@@ -108,6 +108,9 @@
#endif
#endif
+#if defined(__FreeBSD__) && defined(__alpha__)
+#define IEEE_LITTLE_ENDIAN
+#endif
#ifdef __arm32__
/*
* Although the CPU is little endian the FP has different
@@ -142,8 +145,13 @@
#include "memory.h"
#endif
#endif
+#if defined(__FreeBSD__)
+#define mutex_lock(x)
+#define mutex_unlock(x)
+#else
#include "extern.h"
#include "reentrant.h"
+#endif
#ifdef MALLOC
#ifdef KR_headers
@@ -283,8 +291,13 @@
#define LSB 1
#define Sign_bit 0x80000000
#define Log2P 1
+#if defined(__FreeBSD__) && defined(__alpha__)
+#define Tiny0 0x100000
+#define Tiny1 0
+#else /* !FreeBSD/alpha */
#define Tiny0 0
#define Tiny1 1
+#endif /* FreeBSD/alpha */
#define Quick_max 14
#define Int_max 14
#define Infinite(x) (word0(x) == 0x7ff00000) /* sufficient test for here */
---
Nobuhiro Yasutomi ISAC, Inc.
http://www.isac.co.jp/
State Changed From-To: open->patched A fix was committed to -CURRENT. Responsible Changed From-To: freebsd-alpha->robert Robert reported that a patch was committed State Changed From-To: patched->closed Describes the same bug as PR #12623 and #43567, further status updates will occur as follow-ups to the latter. |
strtod(3) make floating exception when smallest value convert. How-To-Repeat: try following saple: #include <stdlib.h> main(){ double a=strtod("2.2250738585072014e-308", NULL); printf("%g\n", a); }