bignum.c: explicit casts

* bignum.c (int_pow_tmp2): explicitly cast to get rid of implicit
  conversion.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61012 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 10 insertions, 12 deletions

diff --git a/bignum.c b/bignum.c
index 4643973e91..a87429aac6 100644
--- a/bignum.c
+++ b/bignum.c
@@ -6994,38 +6994,36 @@ int_pow_tmp2(VALUE x, VALUE y, long mm, int nega_flg)
 #ifdef DLONG
     DLONG const mmm = mm;
     long xx = FIX2LONG(x);
+# define MUL_MODULO(a, b, c) (long)(((DLONG)(a) * (DLONG)(b)) % (c))
 
     for (/*NOP*/; ! FIXNUM_P(y); y = rb_funcall(y, idGTGT, 1, LONG2FIX(1L))) {
         if (RTEST(rb_int_odd_p(y))) {
-            tmp = ((DLONG)tmp * (DLONG)xx) % mmm;
+            tmp = MUL_MODULO(tmp, xx, mmm);
         }
-        xx = ((DLONG)xx * (DLONG)xx) % mmm;
+        xx = MUL_MODULO(xx, xx, mmm);
     }
     for (yy = FIX2LONG(y); yy; yy >>= 1L) {
         if (yy & 1L) {
-            tmp = ((DLONG)tmp * (DLONG)xx) % mmm;
+            tmp = MUL_MODULO(tmp, xx, mmm);
         }
-        xx = ((DLONG)xx * (DLONG)xx) % mmm;
+        xx = MUL_MODULO(xx, xx, mmm);
     }
 #else
     VALUE const m = LONG2FIX(mm);
     VALUE tmp2 = LONG2FIX(tmp);
+# define MUL_MODULO(a, b, c) rb_int_modulo(rb_fix_mul_fix((a), (b)), (c))
 
     for (/*NOP*/; ! FIXNUM_P(y); y = rb_funcall(y, idGTGT, 1, LONG2FIX(1L))) {
         if (RTEST(rb_int_odd_p(y))) {
-            tmp2 = rb_fix_mul_fix(tmp2, x);
-            tmp2 = rb_int_modulo(tmp2, m);
+            tmp2 = MUL_MODULO(tmp2, x, m);
         }
-        x = rb_fix_mul_fix(x, x);
-        x = rb_int_modulo(x, m);
+        x = MUL_MODULO(x, x, m);
     }
     for (yy = FIX2LONG(y); yy; yy >>= 1L) {
         if (yy & 1L) {
-            tmp2 = rb_fix_mul_fix(tmp2, x);
-            tmp2 = rb_int_modulo(tmp2, m);
+            tmp2 = MUL_MODULO(tmp2, x, m);
         }
-        x = rb_fix_mul_fix(x, x);
-        x = rb_int_modulo(x, m);
+        x = MUL_MODULO(x, x, m);
     }
 
     tmp = FIX2LONG(tmp2);