Revert "params: core, core/vm, miner: 64bit gas instructions (#3514)"

This reverts commit 8b57c494908637a5c0e74f8f7a13b3218e026757.

1 files changed, 0 insertions, 25 deletions

diff --git a/common/math/integer.go b/common/math/integer.go
deleted file mode 100644
index 8162b1985..000000000
--- a/common/math/integer.go
+++ /dev/null
@@ -1,25 +0,0 @@
-package math
-
-import gmath "math"
-
-/*
- * NOTE: The following methods need to be optimised using either bit checking or asm
- */
-
-// SafeSub returns subtraction result and whether overflow occurred.
-func SafeSub(x, y uint64) (uint64, bool) {
-	return x - y, x < y
-}
-
-// SafeAdd returns the result and whether overflow occurred.
-func SafeAdd(x, y uint64) (uint64, bool) {
-	return x + y, y > gmath.MaxUint64-x
-}
-
-// SafeMul returns multiplication result and whether overflow occurred.
-func SafeMul(x, y uint64) (uint64, bool) {
-	if x == 0 {
-		return 0, false
-	}
-	return x * y, x != 0 && y != 0 && y > gmath.MaxUint64/x
-}