3 // Copyright 2009 The Go Authors. All rights reserved.
4 // Use of this source code is governed by a BSD-style
5 // license that can be found in the LICENSE file.
7 // Test floating-point literal syntax.
13 func pow10(pow int) float64 {
15 return 1 / pow10(-pow)
18 return pow10(pow-1) * 10
23 func close(da float64, ia, ib int64, pow int) bool {
24 db := float64(ia) / float64(ib)
27 if da == 0 || db == 0 {
28 if da == 0 && db == 0 {
50 if !close(0., 0, 1, 0) {
51 print("0. is ", 0., "\n")
53 if !close(+10., 10, 1, 0) {
54 print("+10. is ", +10., "\n")
56 if !close(-210., -210, 1, 0) {
57 print("-210. is ", -210., "\n")
60 if !close(.0, 0, 1, 0) {
61 print(".0 is ", .0, "\n")
63 if !close(+.01, 1, 100, 0) {
64 print("+.01 is ", +.01, "\n")
66 if !close(-.012, -12, 1000, 0) {
67 print("-.012 is ", -.012, "\n")
70 if !close(0.0, 0, 1, 0) {
71 print("0.0 is ", 0.0, "\n")
73 if !close(+10.01, 1001, 100, 0) {
74 print("+10.01 is ", +10.01, "\n")
76 if !close(-210.012, -210012, 1000, 0) {
77 print("-210.012 is ", -210.012, "\n")
80 if !close(0E+1, 0, 1, 0) {
81 print("0E+1 is ", 0E+1, "\n")
83 if !close(+10e2, 10, 1, 2) {
84 print("+10e2 is ", +10e2, "\n")
86 if !close(-210e3, -210, 1, 3) {
87 print("-210e3 is ", -210e3, "\n")
90 if !close(0E-1, 0, 1, 0) {
91 print("0E-1 is ", 0E-1, "\n")
93 if !close(+0e23, 0, 1, 1) {
94 print("+0e23 is ", +0e23, "\n")
96 if !close(-0e345, 0, 1, 1) {
97 print("-0e345 is ", -0e345, "\n")
100 if !close(0E1, 0, 1, 1) {
101 print("0E1 is ", 0E1, "\n")
103 if !close(+10e23, 10, 1, 23) {
104 print("+10e23 is ", +10e23, "\n")
106 if !close(-210e34, -210, 1, 34) {
107 print("-210e34 is ", -210e34, "\n")
110 if !close(0.E1, 0, 1, 1) {
111 print("0.E1 is ", 0.E1, "\n")
113 if !close(+10.e+2, 10, 1, 2) {
114 print("+10.e+2 is ", +10.e+2, "\n")
116 if !close(-210.e-3, -210, 1, -3) {
117 print("-210.e-3 is ", -210.e-3, "\n")
120 if !close(.0E1, 0, 1, 1) {
121 print(".0E1 is ", .0E1, "\n")
123 if !close(+.01e2, 1, 100, 2) {
124 print("+.01e2 is ", +.01e2, "\n")
126 if !close(-.012e3, -12, 1000, 3) {
127 print("-.012e3 is ", -.012e3, "\n")
130 if !close(0.0E1, 0, 1, 0) {
131 print("0.0E1 is ", 0.0E1, "\n")
133 if !close(+10.01e2, 1001, 100, 2) {
134 print("+10.01e2 is ", +10.01e2, "\n")
136 if !close(-210.012e3, -210012, 1000, 3) {
137 print("-210.012e3 is ", -210.012e3, "\n")
140 if !close(0.E+12, 0, 1, 0) {
141 print("0.E+12 is ", 0.E+12, "\n")
143 if !close(+10.e23, 10, 1, 23) {
144 print("+10.e23 is ", +10.e23, "\n")
146 if !close(-210.e33, -210, 1, 33) {
147 print("-210.e33 is ", -210.e33, "\n")
150 if !close(.0E-12, 0, 1, 0) {
151 print(".0E-12 is ", .0E-12, "\n")
153 if !close(+.01e23, 1, 100, 23) {
154 print("+.01e23 is ", +.01e23, "\n")
156 if !close(-.012e34, -12, 1000, 34) {
157 print("-.012e34 is ", -.012e34, "\n")
160 if !close(0.0E12, 0, 1, 12) {
161 print("0.0E12 is ", 0.0E12, "\n")
163 if !close(+10.01e23, 1001, 100, 23) {
164 print("+10.01e23 is ", +10.01e23, "\n")
166 if !close(-210.012e33, -210012, 1000, 33) {
167 print("-210.012e33 is ", -210.012e33, "\n")
170 if !close(0.E123, 0, 1, 123) {
171 print("0.E123 is ", 0.E123, "\n")
173 if !close(+10.e+23, 10, 1, 23) {
174 print("+10.e+234 is ", +10.e+234, "\n")
176 if !close(-210.e-35, -210, 1, -35) {
177 print("-210.e-35 is ", -210.e-35, "\n")
180 if !close(.0E123, 0, 1, 123) {
181 print(".0E123 is ", .0E123, "\n")
183 if !close(+.01e29, 1, 100, 29) {
184 print("+.01e29 is ", +.01e29, "\n")
186 if !close(-.012e29, -12, 1000, 29) {
187 print("-.012e29 is ", -.012e29, "\n")
190 if !close(0.0E123, 0, 1, 123) {
191 print("0.0E123 is ", 0.0E123, "\n")
193 if !close(+10.01e31, 1001, 100, 31) {
194 print("+10.01e31 is ", +10.01e31, "\n")
196 if !close(-210.012e19, -210012, 1000, 19) {
197 print("-210.012e19 is ", -210.012e19, "\n")