Changeset 117

Timestamp:

Aug 15, 2006, 11:22:16 AM (19 years ago)

Author:

dmik

Message:

Tools: Fixed double number handling routines: applying word0 and word1 macros to cached double variables could screw up the GCC optimizer (resulting into SIGFPEs in the release build); |volatile| is now used to prevent caching.

File:

• trunk/src/tools/qlocale.cpp (modified) (6 diffs)

trunk/src/tools/qlocale.cpp ¶

@@ -4295 +4295 @@
 {
     Long L;
-    double a;
+    volatile double a;
 
     L = (word0(x) & Exp_mask) - (P-1)*Exp_msk1;
@@ -4328 +4328 @@
     ULong *xa, *xa0, w, y, z;
     int k;
-    double d;
+    volatile double d;
 #ifdef VAX
     ULong d0, d1;
@@ -4388 +4388 @@
 }
 
-static Bigint *d2b(double d, int *e, int *bits)
+static Bigint *d2b(volatile double d, int *e, int *bits)
 {
     Bigint *b;
@@ -4513 +4513 @@
 static double ratio(Bigint *a, Bigint *b)
 {
-    double da, db;
+    volatile double da, db;
     int k, ka, kb;
 
@@ -4587 +4587 @@
         e, e1, esign, i, j, k, nd, nd0, nf, nz, nz0, sign;
     CONST char *s, *s0, *s1;
-    double aadj, aadj1, adj, rv, rv0;
+    double aadj, aadj1, adj, rv0;
+    volatile double rv;
     Long L;
     ULong y, z;
@@ -5315 +5316 @@
     Bigint *b, *b1, *delta, *mhi, *S;
     Bigint *mlo = NULL; /* pacify gcc */
-    volatile double d2;
-    double ds, eps;
+    volatile double d2, eps;
+    double ds;
     char *s, *s0;