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core/vm, common/math: Add doc about Byte, fix format

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This commit is contained in:
Martin Holst Swende
2017-06-08 23:16:05 +02:00
parent 1496b3aff6
commit ac9865791a
3 changed files with 20 additions and 16 deletions
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8
common/math/big.go
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@ -131,7 +131,7 @@ func PaddedBigBytes(bigint *big.Int, n int) []byte {
}
// bigEndianByteAt returns the byte at position n,
// if bigint is considered big-endian.
// in Big-Endian encoding
// So n==0 returns the least significant byte
func bigEndianByteAt(bigint *big.Int, n int) byte {
words := bigint.Bits()
@ -148,9 +148,9 @@ func bigEndianByteAt(bigint *big.Int, n int) byte {
}
// Byte returns the byte at position n,
// if bigint is considered little-endian with the supplied padlength.
// n==0 returns the most significant byte
// bigint '5', padlength 32, n=31 => 5
// with the supplied padlength in Little-Endian encoding.
// n==0 returns the MSB
// Example: bigint '5', padlength 32, n=31 => 5
func Byte(bigint *big.Int, padlength, n int) byte {
if n >= padlength {
return byte(0)