mirror of https://github.com/google/oss-fuzz.git
64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
// Copyright 2021 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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package mathfuzzer
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import "math/big"
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func FuzzBigIntCmp1(data []byte) int {
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if !isDivisibleBy(len(data), 2) {
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return -1
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}
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i1 := new(big.Int)
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i2 := new(big.Int)
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half := len(data) / 2
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halfOne := data[:half]
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halfTwo := data[half:]
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i1.SetBytes(halfOne)
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i2.SetBytes(halfTwo)
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i1.Cmp(i2)
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return 1
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}
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func FuzzBigIntCmp2(data []byte) int {
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if !isDivisibleBy(len(data), 2) {
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return -1
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}
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x, y := new(big.Int), new(big.Int)
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half := len(data)/2
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if err := x.UnmarshalText(data[:half]); err != nil {
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return 0
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}
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if err := y.UnmarshalText(data[half:]); err != nil {
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return 0
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}
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x.Cmp(y)
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return 1
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}
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func FuzzRatSetString(data []byte) int {
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_, _ = new(big.Rat).SetString(string(data))
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return 1
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}
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func isDivisibleBy(n int, divisibleby int) bool {
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return (n % divisibleby) == 0
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}
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