Mercurial > cpython-lru_cache-weakref

diff Modules/structmodule.c @ 4859:ab461c762559 legacy-trunk

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Oops -- unpack float/double didn't do the right thing if e==0.
author Guido van Rossum <guido@python.org>
date Thu, 02 Jan 1997 22:31:07 +0000
parents 198989ee36d5
children 69ca5e3ccc6d
line wrap: on
line diff
--- a/Modules/structmodule.c	Thu Jan 02 22:21:36 1997 +0000
+++ b/Modules/structmodule.c	Thu Jan 02 22:31:07 1997 +0000
@@ -402,8 +402,13 @@
 	x = (double)f / 8388608.0;
 
 	/* XXX This sadly ignores Inf/NaN issues */
-	if (e != 0)
-		x = ldexp(1.0 + x, e - 127);
+	if (e == 0)
+		e = -126;
+	else {
+		x += 1.0;
+		e -= 127;
+	}
+	x = ldexp(x, e);
 
 	if (s)
 		x = -x;
@@ -459,8 +464,13 @@
 	x /= 268435456.0; /* 2**28 */
 
 	/* XXX This sadly ignores Inf/NaN */
-	if (e != 0)
-		x = ldexp(1.0 + x, e - 1023);
+	if (e == 0)
+		e = -1022;
+	else {
+		x += 1.0;
+		e -= 1023;
+	}
+	x = ldexp(x, e);
 
 	if (s)
 		x = -x;