* intnum.c (yasm_intnum_zero): New function to zero an existing intnum.

* intnum.h (yasm_intnum_zero): Add prototype for above.

svn path=/trunk/yasm/; revision=1158

libyasm/intnum.c

@@ -445,6 +445,16 @@ yasm_intnum_calc(yasm_intnum *acc, yasm_expr_op op, yasm_intnum *operand,
 }
 /*@=nullderef =nullpass =branchstate@*/
 
+void
+yasm_intnum_zero(yasm_intnum *intn)
+{
+    if (intn->type == INTNUM_BV) {
+	BitVector_Destroy(intn->val.bv);
+	intn->type = INTNUM_UL;
+    }
+    intn->val.ul = 0;
+}
+
 int
 yasm_intnum_is_zero(yasm_intnum *intn)
 {

libyasm/intnum.h

@@ -112,6 +112,11 @@ void yasm_intnum_destroy(/*@only@*/ yasm_intnum *intn);
 void yasm_intnum_calc(yasm_intnum *acc, yasm_expr_op op, yasm_intnum *operand,
 		      unsigned long line);
 
+/** Zero an intnum.
+ * \param intn	    intnum
+ */
+void yasm_intnum_zero(yasm_intnum *intn);
+
 /** Simple value check for 0.
  * \param acc	    intnum
  * \return Nonzero if acc==0.