44 lines
777 B
Go
44 lines
777 B
Go
package ethutil
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import (
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"math/big"
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)
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var BigInt0 *big.Int = big.NewInt(0)
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// True
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var BigTrue *big.Int = big.NewInt(1)
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// False
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var BigFalse *big.Int = big.NewInt(0)
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// Returns the power of two integers
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func BigPow(a, b int) *big.Int {
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c := new(big.Int)
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c.Exp(big.NewInt(int64(a)), big.NewInt(int64(b)), big.NewInt(0))
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return c
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}
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// Like big.NewInt(uint64); this takes a string instead.
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func Big(num string) *big.Int {
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n := new(big.Int)
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n.SetString(num, 0)
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return n
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}
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// Like big.NewInt(uint64); this takes a byte buffer instead.
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func BigD(data []byte) *big.Int {
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n := new(big.Int)
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n.SetBytes(data)
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return n
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}
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func BigToBytes(num *big.Int, base int) []byte {
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ret := make([]byte, base/8)
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return append(ret[:len(ret)-len(num.Bytes())], num.Bytes()...)
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}
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