* ppc-instructions (Disabled_Exponent_Underflow): Increment

the exponent when denormalizing.
27 years ago · 9ff590a53b
2 changed files with 6 additions and 1 deletions
--- a/sim/ppc/ChangeLog
+++ b/sim/ppc/ChangeLog
@ -1,3 +1,8 @@
+2000-03-25  Geoff Keating  <geoffk@cygnus.com>
+
+	* ppc-instructions (Disabled_Exponent_Underflow): Increment
+	the exponent when denormalizing.
+
 Thu Sep  2 18:15:53 1999  Andrew Cagney  <cagney@b1.cygnus.com>

 	* configure: Regenerated to track ../common/aclocal.m4 changes.
--- a/sim/ppc/ppc-instructions
+++ b/sim/ppc/ppc-instructions
@ -4282,7 +4282,7 @@ void::function::invalid_zero_divide_operation:cpu *processor, unsigned_word cia,
 	  }
 	    /* G|R|X == zero from above */
 	    while (exp < -126) {
-	      exp = exp - 1;
+	      exp = exp + 1;
 	      frac_grx = (INSERTED64(EXTRACTED64(frac_grx, 0, 54), 1, 55)
 	                  | MASKED64(frac_grx, 55, 55));
 	    }