tzhash/gf127/avx2/gf127x2_test.go

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package avx2
import (
"testing"
"github.com/stretchr/testify/require"
)
const maxUint64 = ^uint64(0)
var testCasesSplit = []struct {
num *GF127x2
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h1 *GF127
h2 *GF127
}{
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{&GF127x2{GF127{123, 31}, GF127{141, 9}}, &GF127{123, 31}, &GF127{141, 9}},
{&GF127x2{GF127{maxUint64, 0}, GF127{0, maxUint64}}, &GF127{maxUint64, 0}, &GF127{0, maxUint64}},
}
func TestSplit(t *testing.T) {
for _, tc := range testCasesSplit {
a, b := Split(tc.num)
require.Equal(t, tc.h1, a)
require.Equal(t, tc.h2, b)
}
}
func TestCombineTo(t *testing.T) {
c := new(GF127x2)
for _, tc := range testCasesSplit {
CombineTo(tc.h1, tc.h2, c)
require.Equal(t, tc.num, c)
}
}
var testCasesMul10x2 = [][2]*GF127x2{
{
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&GF127x2{GF127{123, 0}, GF127{123, 0}},
&GF127x2{GF127{246, 0}, GF127{246, 0}},
},
{
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&GF127x2{GF127{maxUint64, 2}, GF127{0, 1}},
&GF127x2{GF127{maxUint64 - 1, 5}, GF127{0, 2}},
},
{
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&GF127x2{GF127{0, maxUint64 >> 1}, GF127{maxUint64, 2}},
&GF127x2{GF127{1 + 1<<63, maxUint64>>1 - 1}, GF127{maxUint64 - 1, 5}},
},
}
func TestMul10x2(t *testing.T) {
c := new(GF127x2)
for _, tc := range testCasesMul10x2 {
Mul10x2(tc[0], c)
require.Equal(t, tc[1], c)
}
}
var testCasesMul11x2 = [][2]*GF127x2{
{
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&GF127x2{GF127{123, 0}, GF127{123, 0}},
&GF127x2{GF127{141, 0}, GF127{141, 0}},
},
{
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&GF127x2{GF127{maxUint64, 2}, GF127{0, 1}},
&GF127x2{GF127{1, 7}, GF127{0, 3}},
},
{
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&GF127x2{GF127{0, maxUint64 >> 1}, GF127{maxUint64, 2}},
&GF127x2{GF127{1 + 1<<63, 1}, GF127{1, 7}},
},
}
func TestMul11x2(t *testing.T) {
c := new(GF127x2)
for _, tc := range testCasesMul11x2 {
Mul11x2(tc[0], c)
require.Equal(t, tc[1], c)
}
}