diff options
Diffstat (limited to 'common/math/integer.go')
-rw-r--r-- | common/math/integer.go | 25 |
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 -} |