github.com/consensys/gnark-crypto@v0.14.0/ecc/bls12-377/fr/iop/expressions_test.go (about)

     1  // Copyright 2020 Consensys Software Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  // Code generated by consensys/gnark-crypto DO NOT EDIT
    16  
    17  package iop
    18  
    19  import (
    20  	"testing"
    21  
    22  	"github.com/consensys/gnark-crypto/ecc/bls12-377/fr"
    23  )
    24  
    25  func TestEvaluate(t *testing.T) {
    26  
    27  	f := func(_ int, x ...fr.Element) fr.Element {
    28  		var a fr.Element
    29  		a.Add(&x[0], &x[1]).Add(&a, &x[2])
    30  		return a
    31  	}
    32  
    33  	size := 64
    34  	u := make([]fr.Element, size)
    35  	v := make([]fr.Element, size)
    36  	w := make([]fr.Element, size)
    37  	for i := 0; i < size; i++ {
    38  		u[i].SetUint64(uint64(i))
    39  		v[i].SetUint64(uint64(i + 1))
    40  		w[i].SetUint64(uint64(i + 2))
    41  	}
    42  	r := make([]fr.Element, size)
    43  	for i := 0; i < size; i++ {
    44  		r[i].SetUint64(uint64(3 * (i + 1)))
    45  	}
    46  	form := Form{Layout: Regular, Basis: Canonical}
    47  	wu := NewPolynomial(&u, form)
    48  	wv := NewPolynomial(&v, form)
    49  	ww := NewPolynomial(&w, form)
    50  
    51  	rr, err := Evaluate(f, nil, form, wu, wv, ww)
    52  	if err != nil {
    53  		t.Fatal(err)
    54  	}
    55  
    56  	wu.ToBitReverse()
    57  	rrb, err := Evaluate(f, nil, form, wu, wv, ww)
    58  	if err != nil {
    59  		t.Fatal(err)
    60  	}
    61  
    62  	wv.ToBitReverse()
    63  	ww.ToBitReverse()
    64  	rrc, err := Evaluate(f, nil, form, wu, wv, ww)
    65  	if err != nil {
    66  		t.Fatal(err)
    67  	}
    68  
    69  	// compare with the expected result
    70  	for i := 0; i < size; i++ {
    71  		if !rr.Coefficients()[i].Equal(&r[i]) {
    72  			t.Fatal("error evaluation")
    73  		}
    74  		if !rrb.Coefficients()[i].Equal(&r[i]) {
    75  			t.Fatal("error evaluation")
    76  		}
    77  		if !rrc.Coefficients()[i].Equal(&r[i]) {
    78  			t.Fatal("error evaluation")
    79  		}
    80  
    81  	}
    82  }