Fix sign of number remainder (ecma_op_number_remainder).

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com

jerry-core/ecma/base/ecma-helpers-number.cpp

@@ -683,7 +683,15 @@ ecma_number_calc_remainder (ecma_number_t left_num, /**< left operand */
 
   ecma_number_t q = ecma_number_trunc (ecma_number_divide (n, d));
 
-  return ecma_number_substract (n, ecma_number_multiply (d, q));
+  ecma_number_t r = ecma_number_substract (n, ecma_number_multiply (d, q));
+
+  if (ecma_number_is_zero (r)
+      && ecma_number_is_negative (n))
+  {
+    r = ecma_number_negate (r);
+  }
+
+  return r;
 } /* ecma_number_calc_remainder */
 
 /**

tests/jerry/arithmetics.js

@@ -32,3 +32,8 @@ assert((number % 79) == 2);
 
 var num1 = 1234567, num2 = 1234000;
 assert((num1 % num2) == 567);
+
+assert (1 / (-1 % -1) < 0);
+assert (1 / (-1 % 1) < 0);
+assert (1 / (1 % -1) > 0);
+assert (1 / (1 % 1) > 0);