From 5f7826270c9e87509fd7731ec64953a5e4761de0 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Tue, 28 Feb 2017 15:09:11 +0100 Subject: all: unify big.Int zero checks, use common/math in more places (#3716) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * common/math: optimize PaddedBigBytes, use it more name old time/op new time/op delta PaddedBigBytes-8 71.1ns ± 5% 46.1ns ± 1% -35.15% (p=0.000 n=20+19) name old alloc/op new alloc/op delta PaddedBigBytes-8 48.0B ± 0% 32.0B ± 0% -33.33% (p=0.000 n=20+20) * all: unify big.Int zero checks Various checks were in use. This commit replaces them all with Int.Sign, which is cheaper and less code. eg templates: func before(x *big.Int) bool { return x.BitLen() == 0 } func after(x *big.Int) bool { return x.Sign() == 0 } func before(x *big.Int) bool { return x.BitLen() > 0 } func after(x *big.Int) bool { return x.Sign() != 0 } func before(x *big.Int) int { return x.Cmp(common.Big0) } func after(x *big.Int) int { return x.Sign() } * common/math, crypto/secp256k1: make ReadBits public in package math --- tests/util.go | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tests/util.go') diff --git a/tests/util.go b/tests/util.go index 78bb06d06..7a08e5ed8 100644 --- a/tests/util.go +++ b/tests/util.go @@ -71,7 +71,7 @@ func checkLogs(tlog []Log, logs []*types.Log) error { } } } - genBloom := common.LeftPadBytes(types.LogsBloom([]*types.Log{logs[i]}).Bytes(), 256) + genBloom := math.PaddedBigBytes(types.LogsBloom([]*types.Log{logs[i]}), 256) if !bytes.Equal(genBloom, common.Hex2Bytes(log.BloomF)) { return fmt.Errorf("bloom mismatch") -- cgit