go literals 源码

2022-07-15
浏览 (1165)

golang literals 代码

文件路径：/src/cmd/compile/internal/types2/testdata/check/literals.go

// Copyright 2019 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.

// This file tests various representations of literals
// and compares them with literals or constant expressions
// of equal values.

package literals

func _() {
	// 0-octals
	assert(0_123 == 0123)
	assert(0123_456 == 0123456)

	// decimals
	assert(1_234 == 1234)
	assert(1_234_567 == 1234567)

	// hexadecimals
	assert(0X_0 == 0)
	assert(0X_1234 == 0x1234)
	assert(0X_CAFE_f00d == 0xcafef00d)

	// octals
	assert(0o0 == 0)
	assert(0o1234 == 01234)
	assert(0o01234567 == 01234567)

	assert(0O0 == 0)
	assert(0O1234 == 01234)
	assert(0O01234567 == 01234567)

	assert(0o_0 == 0)
	assert(0o_1234 == 01234)
	assert(0o0123_4567 == 01234567)

	assert(0O_0 == 0)
	assert(0O_1234 == 01234)
	assert(0O0123_4567 == 01234567)

	// binaries
	assert(0b0 == 0)
	assert(0b1011 == 0xb)
	assert(0b00101101 == 0x2d)

	assert(0B0 == 0)
	assert(0B1011 == 0xb)
	assert(0B00101101 == 0x2d)

	assert(0b_0 == 0)
	assert(0b10_11 == 0xb)
	assert(0b_0010_1101 == 0x2d)

	// decimal floats
	assert(1_2_3. == 123.)
	assert(0_123. == 123.)

	assert(0_0e0 == 0.)
	assert(1_2_3e0 == 123.)
	assert(0_123e0 == 123.)

	assert(0e-0_0 == 0.)
	assert(1_2_3E+0 == 123.)
	assert(0123E1_2_3 == 123e123)

	assert(0.e+1 == 0.)
	assert(123.E-1_0 == 123e-10)
	assert(01_23.e123 == 123e123)

	assert(.0e-1 == .0)
	assert(.123E+10 == .123e10)
	assert(.0123E123 == .0123e123)

	assert(1_2_3.123 == 123.123)
	assert(0123.01_23 == 123.0123)

	// hexadecimal floats
	assert(0x0.p+0 == 0.)
	assert(0Xdeadcafe.p-10 == 0xdeadcafe/1024.0)
	assert(0x1234.P84 == 0x1234000000000000000000000)

	assert(0x.1p-0 == 1./16)
	assert(0X.deadcafep4 == 1.0*0xdeadcafe/0x10000000)
	assert(0x.1234P+12 == 1.0*0x1234/0x10)

	assert(0x0p0 == 0.)
	assert(0Xdeadcafep+1 == 0x1bd5b95fc)
	assert(0x1234P-10 == 0x1234/1024.0)

	assert(0x0.0p0 == 0.)
	assert(0Xdead.cafep+1 == 1.0*0x1bd5b95fc/0x10000)
	assert(0x12.34P-10 == 1.0*0x1234/0x40000)

	assert(0Xdead_cafep+1 == 0xdeadcafep+1)
	assert(0x_1234P-10 == 0x1234p-10)

	assert(0X_dead_cafe.p-10 == 0xdeadcafe.p-10)
	assert(0x12_34.P1_2_3 == 0x1234.p123)

	assert(1_234i == 1234i)
	assert(1_234_567i == 1234567i)

	assert(0.i == 0i)
	assert(123.i == 123i)
	assert(0123.i == 123i)

	assert(0.e+1i == 0i)
	assert(123.E-1_0i == 123e-10i)
	assert(01_23.e123i == 123e123i)
}

相关信息

go 源码目录

相关文章

go blank 源码

go builtins0 源码

go builtins1 源码

go chans 源码

go compliterals 源码

go const0 源码

go const1 源码

go constdecl 源码

go conversions0 源码

go conversions1 源码

0 赞

所属分类： 后端技术
本文标签： golang
版权声明： 原创文章如转载，请注明本文链接: https://m.seaxiang.com/blog/423a92512c69440ca012841dcca3ff91

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙初识ArkTS语言
6、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
7、 flink kafka connector scan.startup.mode 的几个选项
8、 golang
9、 openharmony
10、 Vue中input框自动聚焦

Loading...