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$FreeBSD$
$MCom: ports/www/firefox-devel/files/patch-Double.cpp,v 1.6 2005/07/14 05:25:43 ahze Exp $
--- extensions/transformiix/source/base/Double.cpp.orig Thu Jan 30 09:26:46 2003
+++ extensions/transformiix/source/base/Double.cpp Sun Nov 16 01:46:42 2003
@@ -51,10 +51,10 @@
//A trick to handle IEEE floating point exceptions on FreeBSD - E.D.
#ifdef __FreeBSD__
#include <ieeefp.h>
-#ifdef __alpha__
-fp_except_t allmask = FP_X_INV|FP_X_OFL|FP_X_UFL|FP_X_DZ|FP_X_IMP;
-#else
+#if defined(__i386__)
fp_except_t allmask = FP_X_INV|FP_X_OFL|FP_X_UFL|FP_X_DZ|FP_X_IMP|FP_X_DNML;
+#else
+fp_except_t allmask = FP_X_INV|FP_X_OFL|FP_X_UFL|FP_X_DZ|FP_X_IMP;
#endif
fp_except_t oldmask = fpsetmask(~allmask);
#endif
@@ -75,22 +75,31 @@
#define TX_DOUBLE_HI32_EXPMASK 0x7ff00000
#define TX_DOUBLE_HI32_MANTMASK 0x000fffff
+union ui32dun {
+ PRUint32 i[2];
+ double d;
+};
+
//-- Initialize Double related constants
#ifdef IS_BIG_ENDIAN
-const PRUint32 nanMask[2] = {TX_DOUBLE_HI32_EXPMASK | TX_DOUBLE_HI32_MANTMASK,
- 0xffffffff};
-const PRUint32 infMask[2] = {TX_DOUBLE_HI32_EXPMASK, 0};
-const PRUint32 negInfMask[2] = {TX_DOUBLE_HI32_EXPMASK | TX_DOUBLE_HI32_SIGNBIT, 0};
+const union ui32dun nanMask =
+ {{TX_DOUBLE_HI32_EXPMASK | TX_DOUBLE_HI32_MANTMASK, 0xffffffff}};
+const union ui32dun infMask =
+ {{TX_DOUBLE_HI32_EXPMASK, 0}};
+const union ui32dun negInfMask =
+ {{TX_DOUBLE_HI32_EXPMASK | TX_DOUBLE_HI32_SIGNBIT, 0}};
#else
-const PRUint32 nanMask[2] = {0xffffffff,
- TX_DOUBLE_HI32_EXPMASK | TX_DOUBLE_HI32_MANTMASK};
-const PRUint32 infMask[2] = {0, TX_DOUBLE_HI32_EXPMASK};
-const PRUint32 negInfMask[2] = {0, TX_DOUBLE_HI32_EXPMASK | TX_DOUBLE_HI32_SIGNBIT};
+const union ui32dun nanMask =
+ {{0xffffffff, TX_DOUBLE_HI32_EXPMASK | TX_DOUBLE_HI32_MANTMASK}};
+const union ui32dun infMask =
+ {{0, TX_DOUBLE_HI32_EXPMASK}};
+const union ui32dun negInfMask =
+ {{0, TX_DOUBLE_HI32_EXPMASK | TX_DOUBLE_HI32_SIGNBIT}};
#endif
-const double Double::NaN = *((double*)nanMask);
-const double Double::POSITIVE_INFINITY = *((double*)infMask);
-const double Double::NEGATIVE_INFINITY = *((double*)negInfMask);
+const double Double::NaN = nanMask.d;
+const double Double::POSITIVE_INFINITY = infMask.d;
+const double Double::NEGATIVE_INFINITY = negInfMask.d;
/*
* Determines whether the given double represents positive or negative
|
