Add operator 'rem' as extension to BigDecimal

Deprecate 'mod' operator

libraries/stdlib/src/kotlin/util/BigNumbers.kt

@@ -76,8 +76,15 @@ public inline operator fun BigDecimal.div(other: BigDecimal) : BigDecimal = this
  * Enables the use of the `%` operator for [BigDecimal] instances.
  */
 @kotlin.internal.InlineOnly
+@Deprecated("Use rem(other) instead", ReplaceWith("rem(other)"), DeprecationLevel.WARNING)
 public inline operator fun BigDecimal.mod(other: BigDecimal) : BigDecimal = this.remainder(other)
 
+/**
+ * Enables the use of the `%` operator for [BigDecimal] instances.
+ */
+@kotlin.internal.InlineOnly
+public inline operator fun BigDecimal.rem(other: BigDecimal) : BigDecimal = this.remainder(other)
+
 /**
  * Enables the use of the unary `-` operator for [BigDecimal] instances.
  */

libraries/stdlib/test/numbers/MathJVMTest.kt

@@ -32,6 +32,8 @@ class MathTest {
         assertEquals(BigDecimal("2"), BigDecimal("4") / a)
         assertEquals(BigDecimal("-2"), -a)
         assertEquals(BigDecimal("-2"), -a % b)
+        assertEquals(BigDecimal("-2"), (-a).mod(b))
+        assertEquals(BigDecimal("-2"), (-a).rem(b))
     }
 }