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