From 4b1311e7e5814038e85ec1979590627ed0637fb2 Mon Sep 17 00:00:00 2001
From: cagney <cagney@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon, 15 Sep 2003 21:28:49 +0000
Subject: [PATCH] 2003-09-15 Andrew Cagney <cagney@redhat.com>
* floatformat.h (struct floatformat): Make "exp_bias" signed.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@71407 138bc75d-0d04-0410-961f-82ee72b054a4
---
include/ChangeLog | 4 ++++
include/floatformat.h | 8 ++++++--
2 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/include/ChangeLog b/include/ChangeLog
index 2f29f64c1475..037dee57f92e 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2003-09-15 Andrew Cagney <cagney@redhat.com>
+
+ * floatformat.h (struct floatformat): Make "exp_bias" signed.
+
2003-09-15 Daniel Jacobowitz <drow@mvista.com>
* floatformat.h (floatformat_is_valid): Add prototype.
diff --git a/include/floatformat.h b/include/floatformat.h
index feb3260117c4..1d08fd6183f0 100644
--- a/include/floatformat.h
+++ b/include/floatformat.h
@@ -61,8 +61,12 @@ struct floatformat
unsigned int exp_start;
unsigned int exp_len;
- /* Amount added to "true" exponent. 0x3fff for many IEEE extendeds. */
- unsigned int exp_bias;
+ /* Bias added to a "true" exponent to form the biased exponent. It
+ is intentionally signed as, otherwize, -exp_bias can turn into a
+ very large number (e.g., given the exp_bias of 0x3fff and a 64
+ bit long, the equation (long)(1 - exp_bias) evaluates to
+ 4294950914) instead of -16382). */
+ int exp_bias;
/* Exponent value which indicates NaN. This is the actual value stored in
the float, not adjusted by the exp_bias. This usually consists of all
one bits. */
--
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