u256 math bug fix in aptos

Author: murphy0612

.gitignore

@@ -1,6 +1,7 @@
 # Added by cargo
 /sui/.idea
 /aptos/.idea
+/aptos/.aptos
 /sui/build
 /aptos/build
 /build

aptos/Move.toml

@@ -3,4 +3,12 @@ name = 'IntegerMate'
 version = '1.0.0'
 
 [addresses]
+std = "0x1"
+aptos_std = "0x1"
+aptos_framework = "0x1"
 integer_mate = "_"
+
+[dependencies.MoveStdlib]
+git = "https://github.com/aptos-labs/aptos-core.git"
+subdir = "aptos-move/framework/move-stdlib"
+rev = "devnet"

aptos/sources/math_u256.move

@@ -1,7 +1,4 @@
 module integer_mate::math_u256 {
-    const MASK_U128: u256 = 0x00000000000000000000000000000000ffffffffffffffffffffffffffffffff;
-    const MASK_U64: u256  = 0x000000000000000000000000000000000000000000000000ffffffffffffffff;
-
     public fun div_mod(num: u256, denom: u256): (u256, u256) {
         let p = num / denom;
         let r: u256 = num - (p * denom);
@@ -43,4 +40,4 @@ module integer_mate::math_u256 {
     fun test_add() {
         1000u256 + 1000u256;
     }
-}
+}