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opt / golang / 1.19.4 / src / cmd / compile / internal / test /

📁 ..
📄 README(205 B)
📄 abiutils_test.go(14.51 KB)
📄 abiutilsaux_test.go(3.24 KB)
📄 align_test.go(1.57 KB)
📄 bench_test.go(2.08 KB)
📄 clobberdead_test.go(1.25 KB)
📄 constFold_test.go(322.99 KB)
📄 dep_test.go(858 B)
📄 divconst_test.go(7.74 KB)
📄 fixedbugs_test.go(2.24 KB)
📄 float_test.go(12.48 KB)
📄 global_test.go(2.59 KB)
📄 iface_test.go(1.92 KB)
📄 inl_test.go(8.19 KB)
📄 inst_test.go(2.21 KB)
📄 intrinsics_test.go(1.08 KB)
📄 issue50182_test.go(1.24 KB)
📄 lang_test.go(1.47 KB)
📄 logic_test.go(11.08 KB)
📄 mulconst_test.go(4.29 KB)
📄 race.go(1.33 KB)
📄 reproduciblebuilds_test.go(2.9 KB)
📄 shift_test.go(21.62 KB)
📄 ssa_test.go(5.12 KB)
📄 switch_test.go(2.29 KB)
📄 test.go(13 B)
📁 testdata
📄 truncconst_test.go(1.76 KB)
📄 zerorange_test.go(4.06 KB)

Editing: truncconst_test.go

// Copyright 2017 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 test

import "testing"

var f52want float64 = 1.0 / (1 << 52)
var f53want float64 = 1.0 / (1 << 53)

func TestTruncFlt(t *testing.T) {
	const f52 = 1 + 1.0/(1<<52)
	const f53 = 1 + 1.0/(1<<53)

if got := f52 - 1; got != f52want {
		t.Errorf("f52-1 = %g, want %g", got, f52want)
	}
	if got := float64(f52) - 1; got != f52want {
		t.Errorf("float64(f52)-1 = %g, want %g", got, f52want)
	}
	if got := f53 - 1; got != f53want {
		t.Errorf("f53-1 = %g, want %g", got, f53want)
	}
	if got := float64(f53) - 1; got != 0 {
		t.Errorf("float64(f53)-1 = %g, want 0", got)
	}
}

func TestTruncCmplx(t *testing.T) {
	const r52 = complex(1+1.0/(1<<52), 0)
	const r53 = complex(1+1.0/(1<<53), 0)

if got := real(r52 - 1); got != f52want {
		t.Errorf("real(r52-1) = %g, want %g", got, f52want)
	}
	if got := real(complex128(r52) - 1); got != f52want {
		t.Errorf("real(complex128(r52)-1) = %g, want %g", got, f52want)
	}
	if got := real(r53 - 1); got != f53want {
		t.Errorf("real(r53-1) = %g, want %g", got, f53want)
	}
	if got := real(complex128(r53) - 1); got != 0 {
		t.Errorf("real(complex128(r53)-1) = %g, want 0", got)
	}

const i52 = complex(0, 1+1.0/(1<<52))
	const i53 = complex(0, 1+1.0/(1<<53))

if got := imag(i52 - 1i); got != f52want {
		t.Errorf("imag(i52-1i) = %g, want %g", got, f52want)
	}
	if got := imag(complex128(i52) - 1i); got != f52want {
		t.Errorf("imag(complex128(i52)-1i) = %g, want %g", got, f52want)
	}
	if got := imag(i53 - 1i); got != f53want {
		t.Errorf("imag(i53-1i) = %g, want %g", got, f53want)
	}
	if got := imag(complex128(i53) - 1i); got != 0 {
		t.Errorf("imag(complex128(i53)-1i) = %g, want 0", got)
	}

}

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Editing: truncconst_test.go

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