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Editing: float_test.go
// Copyright 2021 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package runtime_test import ( "testing" ) func TestIssue48807(t *testing.T) { for _, i := range []uint64{ 0x8234508000000001, // from issue48807 1<<56 + 1<<32 + 1, } { got := float32(i) dontwant := float32(float64(i)) if got == dontwant { // The test cases above should be uint64s such that // this equality doesn't hold. These examples trigger // the case where using an intermediate float64 doesn't work. t.Errorf("direct float32 conversion doesn't work: arg=%x got=%x dontwant=%x", i, got, dontwant) } } }
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