xref: /PHP-8.0/ext/standard/tests/math/pow_basic.phpt (revision f8d79582) 
1--TEST--
2Test pow() - basic function test pow()
3--INI--
4precision=14
5--SKIPIF--
6<?php
7if (PHP_INT_SIZE != 4) die("skip this test is for 32bit platform only");
8?>
9--FILE--
10<?php
11$bases = array(23,
12                -23,
13                23.1,
14                -23.1,
15                2.345e1,
16                -2.345e1,
17                0x17,
18                027,
19                "23",
20                "23.45",
21                "2.345e1",
22                PHP_INT_MAX,
23                -PHP_INT_MAX - 1);
24
25$exponents = array(0,
26               1,
27               -1,
28               2,
29               -2,
30               3,
31               -3,
32               2.5,
33               -2.5,
34               500,
35               -500,
36               2147483647,
37               -2147483648);
38
39foreach($bases as $base) {
40    echo "\n\nBase = $base";
41    foreach($exponents as $exponent) {
42        echo "\n..... Exponent = $exponent Result = ";
43        $res = pow($base, $exponent);
44        echo $res;
45    }
46    echo "\n\n";
47}
48?>
49--EXPECT--
50Base = 23
51..... Exponent = 0 Result = 1
52..... Exponent = 1 Result = 23
53..... Exponent = -1 Result = 0.043478260869565
54..... Exponent = 2 Result = 529
55..... Exponent = -2 Result = 0.001890359168242
56..... Exponent = 3 Result = 12167
57..... Exponent = -3 Result = 8.2189529053999E-5
58..... Exponent = 2.5 Result = 2536.9948758324
59..... Exponent = -2.5 Result = 0.00039416713432339
60..... Exponent = 500 Result = INF
61..... Exponent = -500 Result = 0
62..... Exponent = 2147483647 Result = INF
63..... Exponent = -2147483648 Result = 0
64
65
66
67Base = -23
68..... Exponent = 0 Result = 1
69..... Exponent = 1 Result = -23
70..... Exponent = -1 Result = -0.043478260869565
71..... Exponent = 2 Result = 529
72..... Exponent = -2 Result = 0.001890359168242
73..... Exponent = 3 Result = -12167
74..... Exponent = -3 Result = -8.2189529053999E-5
75..... Exponent = 2.5 Result = NAN
76..... Exponent = -2.5 Result = NAN
77..... Exponent = 500 Result = INF
78..... Exponent = -500 Result = 0
79..... Exponent = 2147483647 Result = -INF
80..... Exponent = -2147483648 Result = 0
81
82
83
84Base = 23.1
85..... Exponent = 0 Result = 1
86..... Exponent = 1 Result = 23.1
87..... Exponent = -1 Result = 0.043290043290043
88..... Exponent = 2 Result = 533.61
89..... Exponent = -2 Result = 0.0018740278480538
90..... Exponent = 3 Result = 12326.391
91..... Exponent = -3 Result = 8.1126746668997E-5
92..... Exponent = 2.5 Result = 2564.6608940579
93..... Exponent = -2.5 Result = 0.00038991509650141
94..... Exponent = 500 Result = INF
95..... Exponent = -500 Result = 0
96..... Exponent = 2147483647 Result = INF
97..... Exponent = -2147483648 Result = 0
98
99
100
101Base = -23.1
102..... Exponent = 0 Result = 1
103..... Exponent = 1 Result = -23.1
104..... Exponent = -1 Result = -0.043290043290043
105..... Exponent = 2 Result = 533.61
106..... Exponent = -2 Result = 0.0018740278480538
107..... Exponent = 3 Result = -12326.391
108..... Exponent = -3 Result = -8.1126746668997E-5
109..... Exponent = 2.5 Result = NAN
110..... Exponent = -2.5 Result = NAN
111..... Exponent = 500 Result = INF
112..... Exponent = -500 Result = 0
113..... Exponent = 2147483647 Result = -INF
114..... Exponent = -2147483648 Result = 0
115
116
117
118Base = 23.45
119..... Exponent = 0 Result = 1
120..... Exponent = 1 Result = 23.45
121..... Exponent = -1 Result = 0.042643923240938
122..... Exponent = 2 Result = 549.9025
123..... Exponent = -2 Result = 0.001818504189379
124..... Exponent = 3 Result = 12895.213625
125..... Exponent = -3 Result = 7.7548153065204E-5
126..... Exponent = 2.5 Result = 2662.9138571162
127..... Exponent = -2.5 Result = 0.00037552848257846
128..... Exponent = 500 Result = INF
129..... Exponent = -500 Result = 0
130..... Exponent = 2147483647 Result = INF
131..... Exponent = -2147483648 Result = 0
132
133
134
135Base = -23.45
136..... Exponent = 0 Result = 1
137..... Exponent = 1 Result = -23.45
138..... Exponent = -1 Result = -0.042643923240938
139..... Exponent = 2 Result = 549.9025
140..... Exponent = -2 Result = 0.001818504189379
141..... Exponent = 3 Result = -12895.213625
142..... Exponent = -3 Result = -7.7548153065204E-5
143..... Exponent = 2.5 Result = NAN
144..... Exponent = -2.5 Result = NAN
145..... Exponent = 500 Result = INF
146..... Exponent = -500 Result = 0
147..... Exponent = 2147483647 Result = -INF
148..... Exponent = -2147483648 Result = 0
149
150
151
152Base = 23
153..... Exponent = 0 Result = 1
154..... Exponent = 1 Result = 23
155..... Exponent = -1 Result = 0.043478260869565
156..... Exponent = 2 Result = 529
157..... Exponent = -2 Result = 0.001890359168242
158..... Exponent = 3 Result = 12167
159..... Exponent = -3 Result = 8.2189529053999E-5
160..... Exponent = 2.5 Result = 2536.9948758324
161..... Exponent = -2.5 Result = 0.00039416713432339
162..... Exponent = 500 Result = INF
163..... Exponent = -500 Result = 0
164..... Exponent = 2147483647 Result = INF
165..... Exponent = -2147483648 Result = 0
166
167
168
169Base = 23
170..... Exponent = 0 Result = 1
171..... Exponent = 1 Result = 23
172..... Exponent = -1 Result = 0.043478260869565
173..... Exponent = 2 Result = 529
174..... Exponent = -2 Result = 0.001890359168242
175..... Exponent = 3 Result = 12167
176..... Exponent = -3 Result = 8.2189529053999E-5
177..... Exponent = 2.5 Result = 2536.9948758324
178..... Exponent = -2.5 Result = 0.00039416713432339
179..... Exponent = 500 Result = INF
180..... Exponent = -500 Result = 0
181..... Exponent = 2147483647 Result = INF
182..... Exponent = -2147483648 Result = 0
183
184
185
186Base = 23
187..... Exponent = 0 Result = 1
188..... Exponent = 1 Result = 23
189..... Exponent = -1 Result = 0.043478260869565
190..... Exponent = 2 Result = 529
191..... Exponent = -2 Result = 0.001890359168242
192..... Exponent = 3 Result = 12167
193..... Exponent = -3 Result = 8.2189529053999E-5
194..... Exponent = 2.5 Result = 2536.9948758324
195..... Exponent = -2.5 Result = 0.00039416713432339
196..... Exponent = 500 Result = INF
197..... Exponent = -500 Result = 0
198..... Exponent = 2147483647 Result = INF
199..... Exponent = -2147483648 Result = 0
200
201
202
203Base = 23.45
204..... Exponent = 0 Result = 1
205..... Exponent = 1 Result = 23.45
206..... Exponent = -1 Result = 0.042643923240938
207..... Exponent = 2 Result = 549.9025
208..... Exponent = -2 Result = 0.001818504189379
209..... Exponent = 3 Result = 12895.213625
210..... Exponent = -3 Result = 7.7548153065204E-5
211..... Exponent = 2.5 Result = 2662.9138571162
212..... Exponent = -2.5 Result = 0.00037552848257846
213..... Exponent = 500 Result = INF
214..... Exponent = -500 Result = 0
215..... Exponent = 2147483647 Result = INF
216..... Exponent = -2147483648 Result = 0
217
218
219
220Base = 2.345e1
221..... Exponent = 0 Result = 1
222..... Exponent = 1 Result = 23.45
223..... Exponent = -1 Result = 0.042643923240938
224..... Exponent = 2 Result = 549.9025
225..... Exponent = -2 Result = 0.001818504189379
226..... Exponent = 3 Result = 12895.213625
227..... Exponent = -3 Result = 7.7548153065204E-5
228..... Exponent = 2.5 Result = 2662.9138571162
229..... Exponent = -2.5 Result = 0.00037552848257846
230..... Exponent = 500 Result = INF
231..... Exponent = -500 Result = 0
232..... Exponent = 2147483647 Result = INF
233..... Exponent = -2147483648 Result = 0
234
235
236
237Base = 2147483647
238..... Exponent = 0 Result = 1
239..... Exponent = 1 Result = 2147483647
240..... Exponent = -1 Result = 4.6566128752458E-10
241..... Exponent = 2 Result = 4.6116860141324E+18
242..... Exponent = -2 Result = 2.1684043469905E-19
243..... Exponent = 3 Result = 9.903520300448E+27
244..... Exponent = -3 Result = 1.0097419600935E-28
245..... Exponent = 2.5 Result = 2.1370991100146E+23
246..... Exponent = -2.5 Result = 4.6792401686657E-24
247..... Exponent = 500 Result = INF
248..... Exponent = -500 Result = 0
249..... Exponent = 2147483647 Result = INF
250..... Exponent = -2147483648 Result = 0
251
252
253
254Base = -2147483648
255..... Exponent = 0 Result = 1
256..... Exponent = 1 Result = -2147483648
257..... Exponent = -1 Result = -4.6566128730774E-10
258..... Exponent = 2 Result = 4.6116860184274E+18
259..... Exponent = -2 Result = 2.168404344971E-19
260..... Exponent = 3 Result = -9.903520314283E+27
261..... Exponent = -3 Result = -1.0097419586829E-28
262..... Exponent = 2.5 Result = NAN
263..... Exponent = -2.5 Result = NAN
264..... Exponent = 500 Result = INF
265..... Exponent = -500 Result = 0
266..... Exponent = 2147483647 Result = -INF
267..... Exponent = -2147483648 Result = 0
268
269