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Removed old S(DIV/MOD)

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This commit is contained in:
obscuren 2014-07-25 09:57:47 +02:00
parent 7ee49c32b7
commit 54f9ea14e1
1 changed files with 16 additions and 27 deletions
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43
ethvm/vm.go
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@ -282,20 +282,15 @@ func (self *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
case SDIV:
require(2)
x, y := stack.Popn()
// n > 2**255
if x.Cmp(Pow256) > 0 {
x.Sub(Pow256, x)
self.Printf(" %v / %v", y, x)
if x.Cmp(ethutil.Big0) != 0 {
base.Div(y, x)
}
if y.Cmp(Pow256) > 0 {
y.Sub(Pow256, y)
}
z := new(big.Int)
z.Div(x, y)
if z.Cmp(Pow256) > 0 {
z.Sub(Pow256, z)
}
// Push result on to the stack
stack.Push(z)
self.Printf(" = %v", base)
// Pop result back on the stack
stack.Push(base)
case MOD:
require(2)
x, y := stack.Popn()
@ -309,20 +304,14 @@ func (self *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
case SMOD:
require(2)
x, y := stack.Popn()
// n > 2**255
if x.Cmp(Pow256) > 0 {
x.Sub(Pow256, x)
}
if y.Cmp(Pow256) > 0 {
y.Sub(Pow256, y)
}
z := new(big.Int)
z.Mod(x, y)
if z.Cmp(Pow256) > 0 {
z.Sub(Pow256, z)
}
// Push result on to the stack
stack.Push(z)
self.Printf(" %v %% %v", y, x)
base.Mod(y, x)
self.Printf(" = %v", base)
stack.Push(base)
case EXP:
require(2)
x, y := stack.Popn()