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authorUlrich Drepper <drepper@redhat.com>1999-06-23 12:38:51 +0000
committerUlrich Drepper <drepper@redhat.com>1999-06-23 12:38:51 +0000
commit67994d6f6010739c22b1b4ab99aa88b4fe1ab8bd (patch)
tree4e1bea455bb81a13bad448cacbb5582e1f6f78f4 /misc/efgcvt_r.c
parent7df789e05906a883d03ed2cb2c400356350767cc (diff)
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Update.
1999-06-23 Ulrich Drepper <drepper@cygnus.com> * manual/arith.texi: Document restriction of ndigit parameter of ecvt and friends. * misc/efgcvt.c: Define NDIGIT_MAX. (gcvt): Limit precision in sprintf call to NDIGIT_MAX. Do not dynamically allocate the static buffers. They are small enough. * misc/efgcvt_r.c: Define NDIGIT_MAX. (fcvt_r): Limit precision in snprintf call to NDIGIT_MAX. * misc/qefgcvt.c: Define NDIGIT_MAX. * misc/qefgcvt_r.c: Likewise. * misc/tst-efgcvt.c (special): Add test for large ndigit parameter.
Diffstat (limited to 'misc/efgcvt_r.c')
-rw-r--r--misc/efgcvt_r.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/misc/efgcvt_r.c b/misc/efgcvt_r.c
index 1c237eed4a..167bd7a809 100644
--- a/misc/efgcvt_r.c
+++ b/misc/efgcvt_r.c
@@ -1,5 +1,5 @@
/* Compatibility functions for floating point formatting, reentrant versions.
- Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -26,10 +26,11 @@
#include <sys/param.h>
#ifndef FLOAT_TYPE
-#define FLOAT_TYPE double
-#define FUNC_PREFIX
-#define FLOAT_FMT_FLAG
-#define FLOAT_NAME_EXT
+# define FLOAT_TYPE double
+# define FUNC_PREFIX
+# define FLOAT_FMT_FLAG
+# define FLOAT_NAME_EXT
+# define NDIGIT_MAX DBL_DIG
#endif
#define APPEND(a, b) APPEND2 (a, b)
@@ -87,7 +88,8 @@ APPEND (FUNC_PREFIX, fcvt_r) (value, ndigit, decpt, sign, buf, len)
/* Value is Inf or NaN. */
*sign = 0;
- n = __snprintf (buf, len, "%.*" FLOAT_FMT_FLAG "f", ndigit, value);
+ n = __snprintf (buf, len, "%.*" FLOAT_FMT_FLAG "f", MIN (ndigit, NDIGIT_MAX),
+ value);
if (n < 0)
return -1;