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// Copyright 2018 The gVisor Authors.
//
// 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 tests
import (
"math"
"testing"
)
var safeFloat32s = []float32{
float32(0.0),
float32(1.0),
float32(-1.0),
float32(math.Inf(1)),
float32(math.Inf(-1)),
}
var allFloat32s = append(safeFloat32s, float32(math.NaN()))
var safeFloat64s = []float64{
float64(0.0),
float64(1.0),
float64(-1.0),
math.Inf(1),
math.Inf(-1),
}
var allFloat64s = append(safeFloat64s, math.NaN())
func TestFloat(t *testing.T) {
runTestCases(t, false, "plain", flatten(
allFloat32s,
allFloat64s,
))
// See checkEqual for why NaNs are missing.
runTestCases(t, false, "pointers", pointersTo(flatten(
safeFloat32s,
safeFloat64s,
)))
runTestCases(t, false, "interfaces", interfacesTo(flatten(
safeFloat32s,
safeFloat64s,
)))
runTestCases(t, false, "interfacesToPointers", interfacesTo(pointersTo(flatten(
safeFloat32s,
safeFloat64s,
))))
}
const onlyDouble float64 = 1.0000000000000002
func TestFloatTruncation(t *testing.T) {
runTestCases(t, true, "pass", []interface{}{
truncatingFloat32{save: onlyDouble},
})
runTestCases(t, false, "fail", []interface{}{
truncatingFloat32{save: 1.0},
})
}
var safeComplex64s = combine(safeFloat32s, safeFloat32s, func(i, j interface{}) interface{} {
return complex(i.(float32), j.(float32))
})
var allComplex64s = combine(allFloat32s, allFloat32s, func(i, j interface{}) interface{} {
return complex(i.(float32), j.(float32))
})
var safeComplex128s = combine(safeFloat64s, safeFloat64s, func(i, j interface{}) interface{} {
return complex(i.(float64), j.(float64))
})
var allComplex128s = combine(allFloat64s, allFloat64s, func(i, j interface{}) interface{} {
return complex(i.(float64), j.(float64))
})
func TestComplex(t *testing.T) {
runTestCases(t, false, "plain", flatten(
allComplex64s,
allComplex128s,
))
// See TestFloat; same issue.
runTestCases(t, false, "pointers", pointersTo(flatten(
safeComplex64s,
safeComplex128s,
)))
runTestCases(t, false, "interfacse", interfacesTo(flatten(
safeComplex64s,
safeComplex128s,
)))
runTestCases(t, false, "interfacesTo", interfacesTo(pointersTo(flatten(
safeComplex64s,
safeComplex128s,
))))
}
func TestComplexTruncation(t *testing.T) {
runTestCases(t, true, "pass", []interface{}{
truncatingComplex64{save: complex(onlyDouble, onlyDouble)},
truncatingComplex64{save: complex(1.0, onlyDouble)},
truncatingComplex64{save: complex(onlyDouble, 1.0)},
})
runTestCases(t, false, "fail", []interface{}{
truncatingComplex64{save: complex(1.0, 1.0)},
})
}
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