/usr/share/go-1.8/test/float_lit.go is in golang-1.8-src 1.8.3-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 | // run
// Copyright 2009 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.
// Test floating-point literal syntax.
package main
var bad bool
func pow10(pow int) float64 {
if pow < 0 {
return 1 / pow10(-pow)
}
if pow > 0 {
return pow10(pow-1) * 10
}
return 1
}
func close(da float64, ia, ib int64, pow int) bool {
db := float64(ia) / float64(ib)
db *= pow10(pow)
if da == 0 || db == 0 {
if da == 0 && db == 0 {
return true
}
return false
}
de := (da - db) / da
if de < 0 {
de = -de
}
if de < 1e-14 {
return true
}
if !bad {
println("BUG")
bad = true
}
return false
}
func main() {
if !close(0., 0, 1, 0) {
print("0. is ", 0., "\n")
}
if !close(+10., 10, 1, 0) {
print("+10. is ", +10., "\n")
}
if !close(-210., -210, 1, 0) {
print("-210. is ", -210., "\n")
}
if !close(.0, 0, 1, 0) {
print(".0 is ", .0, "\n")
}
if !close(+.01, 1, 100, 0) {
print("+.01 is ", +.01, "\n")
}
if !close(-.012, -12, 1000, 0) {
print("-.012 is ", -.012, "\n")
}
if !close(0.0, 0, 1, 0) {
print("0.0 is ", 0.0, "\n")
}
if !close(+10.01, 1001, 100, 0) {
print("+10.01 is ", +10.01, "\n")
}
if !close(-210.012, -210012, 1000, 0) {
print("-210.012 is ", -210.012, "\n")
}
if !close(0E+1, 0, 1, 0) {
print("0E+1 is ", 0E+1, "\n")
}
if !close(+10e2, 10, 1, 2) {
print("+10e2 is ", +10e2, "\n")
}
if !close(-210e3, -210, 1, 3) {
print("-210e3 is ", -210e3, "\n")
}
if !close(0E-1, 0, 1, 0) {
print("0E-1 is ", 0E-1, "\n")
}
if !close(+0e23, 0, 1, 1) {
print("+0e23 is ", +0e23, "\n")
}
if !close(-0e345, 0, 1, 1) {
print("-0e345 is ", -0e345, "\n")
}
if !close(0E1, 0, 1, 1) {
print("0E1 is ", 0E1, "\n")
}
if !close(+10e23, 10, 1, 23) {
print("+10e23 is ", +10e23, "\n")
}
if !close(-210e34, -210, 1, 34) {
print("-210e34 is ", -210e34, "\n")
}
if !close(0.E1, 0, 1, 1) {
print("0.E1 is ", 0.E1, "\n")
}
if !close(+10.e+2, 10, 1, 2) {
print("+10.e+2 is ", +10.e+2, "\n")
}
if !close(-210.e-3, -210, 1, -3) {
print("-210.e-3 is ", -210.e-3, "\n")
}
if !close(.0E1, 0, 1, 1) {
print(".0E1 is ", .0E1, "\n")
}
if !close(+.01e2, 1, 100, 2) {
print("+.01e2 is ", +.01e2, "\n")
}
if !close(-.012e3, -12, 1000, 3) {
print("-.012e3 is ", -.012e3, "\n")
}
if !close(0.0E1, 0, 1, 0) {
print("0.0E1 is ", 0.0E1, "\n")
}
if !close(+10.01e2, 1001, 100, 2) {
print("+10.01e2 is ", +10.01e2, "\n")
}
if !close(-210.012e3, -210012, 1000, 3) {
print("-210.012e3 is ", -210.012e3, "\n")
}
if !close(0.E+12, 0, 1, 0) {
print("0.E+12 is ", 0.E+12, "\n")
}
if !close(+10.e23, 10, 1, 23) {
print("+10.e23 is ", +10.e23, "\n")
}
if !close(-210.e33, -210, 1, 33) {
print("-210.e33 is ", -210.e33, "\n")
}
if !close(.0E-12, 0, 1, 0) {
print(".0E-12 is ", .0E-12, "\n")
}
if !close(+.01e23, 1, 100, 23) {
print("+.01e23 is ", +.01e23, "\n")
}
if !close(-.012e34, -12, 1000, 34) {
print("-.012e34 is ", -.012e34, "\n")
}
if !close(0.0E12, 0, 1, 12) {
print("0.0E12 is ", 0.0E12, "\n")
}
if !close(+10.01e23, 1001, 100, 23) {
print("+10.01e23 is ", +10.01e23, "\n")
}
if !close(-210.012e33, -210012, 1000, 33) {
print("-210.012e33 is ", -210.012e33, "\n")
}
if !close(0.E123, 0, 1, 123) {
print("0.E123 is ", 0.E123, "\n")
}
if !close(+10.e+23, 10, 1, 23) {
print("+10.e+234 is ", +10.e+234, "\n")
}
if !close(-210.e-35, -210, 1, -35) {
print("-210.e-35 is ", -210.e-35, "\n")
}
if !close(.0E123, 0, 1, 123) {
print(".0E123 is ", .0E123, "\n")
}
if !close(+.01e29, 1, 100, 29) {
print("+.01e29 is ", +.01e29, "\n")
}
if !close(-.012e29, -12, 1000, 29) {
print("-.012e29 is ", -.012e29, "\n")
}
if !close(0.0E123, 0, 1, 123) {
print("0.0E123 is ", 0.0E123, "\n")
}
if !close(+10.01e31, 1001, 100, 31) {
print("+10.01e31 is ", +10.01e31, "\n")
}
if !close(-210.012e19, -210012, 1000, 19) {
print("-210.012e19 is ", -210.012e19, "\n")
}
if bad {
panic("float_lit")
}
}
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