xref: /PHP-8.4/ext/standard/tests/math/pow.phpt (revision 23afe57f) 
1--TEST--
2Various pow() tests
3--FILE--
4<?php
5
6define('LONG_MAX', is_int(5000000000)? 9223372036854775807 : 0x7FFFFFFF);
7define('LONG_MIN', -LONG_MAX - 1);
8printf("%d,%d,%d,%d\n",is_int(LONG_MIN  ),is_int(LONG_MAX  ),
9                       is_int(LONG_MIN-1),is_int(LONG_MAX+1));
10
11function epsilon_equal($left, $right): bool {
12    return abs(($left-$right) / $left) < 1e-12;
13}
14
15var_dump(0.25 === pow(-2,-2));
16var_dump(-0.5 === pow(-2,-1));
17var_dump(1    === pow(-2, 0));
18var_dump(-2   === pow(-2, 1));
19var_dump(4    === pow(-2, 2));
20var_dump(1.0  === pow(-1,-2));
21var_dump(-1.0 === pow(-1,-1));
22var_dump(1    === pow(-1, 0));
23var_dump(-1   === pow(-1, 1));
24var_dump(1    === pow(-1, 2));
25var_dump(TRUE === is_infinite(pow(0,-2)));
26var_dump(TRUE === is_infinite(pow(0,-1)));
27var_dump(1    === pow( 0, 0));
28var_dump(0    === pow( 0, 1));
29var_dump(0    === pow( 0, 2));
30var_dump(1.0  === pow( 1,-2));
31var_dump(1.0  === pow( 1,-1));
32var_dump(1    === pow( 1, 0));
33var_dump(1    === pow( 1, 1));
34var_dump(1    === pow( 1, 2));
35var_dump(0.25 === pow( 2,-2));
36var_dump(0.5  === pow( 2,-1));
37var_dump(1    === pow( 2, 0));
38var_dump(2    === pow( 2, 1));
39var_dump(4    === pow( 2, 2));
40var_dump(0.25 === pow(-2,-2.0));
41var_dump(-0.5 === pow(-2,-1.0));
42var_dump(1.0  === pow(-2, 0.0));
43var_dump(-2.0 === pow(-2, 1.0));
44var_dump(4.0  === pow(-2, 2.0));
45var_dump(1.0  === pow(-1,-2.0));
46var_dump(-1.0 === pow(-1,-1.0));
47var_dump(1.0  === pow(-1, 0.0));
48var_dump(-1.0 === pow(-1, 1.0));
49var_dump(1.0  === pow(-1, 2.0));
50var_dump(TRUE === is_infinite(pow(0,-2.0)));
51var_dump(TRUE === is_infinite(pow(0,-1.0)));
52var_dump(1.0  === pow( 0, 0.0));
53var_dump(0.0  === pow( 0, 1.0));
54var_dump(0.0  === pow( 0, 2.0));
55var_dump(1.0  === pow( 1,-2.0));
56var_dump(1.0  === pow( 1,-1.0));
57var_dump(1.0  === pow( 1, 0.0));
58var_dump(1.0  === pow( 1, 1.0));
59var_dump(1.0  === pow( 1, 2.0));
60var_dump(0.25 === pow( 2,-2.0));
61var_dump(0.5  === pow( 2,-1.0));
62var_dump(1.0  === pow( 2, 0.0));
63var_dump(2.0  === pow( 2, 1.0));
64var_dump(4.0  === pow( 2, 2.0));
65var_dump(2147483648 === pow(2,31));
66var_dump(epsilon_equal( -2147483648, pow(-2,31) ));
67var_dump(1000000000 === pow(10,9));
68var_dump(100000000  === pow(-10,8));
69var_dump(1    === pow(-1,1443279822));
70var_dump(-1   === pow(-1,1443279821));
71var_dump(epsilon_equal( sqrt(2), pow(2,1/2) ));
72var_dump(0.25 === pow(-2.0,-2.0));
73var_dump(-0.5 === pow(-2.0,-1.0));
74var_dump(1.0  === pow(-2.0, 0.0));
75var_dump(-2.0 === pow(-2.0, 1.0));
76var_dump(4.0  === pow(-2.0, 2.0));
77var_dump(1.0  === pow(-1.0,-2.0));
78var_dump(-1.0 === pow(-1.0,-1.0));
79var_dump(1.0  === pow(-1.0, 0.0));
80var_dump(-1.0 === pow(-1.0, 1.0));
81var_dump(1.0  === pow(-1.0, 2.0));
82var_dump(TRUE === is_infinite(pow(0.0,-2.0)));
83var_dump(TRUE === is_infinite(pow(0.0,-1.0)));
84var_dump(1.0  === pow( 0.0, 0.0));
85var_dump(0.0  === pow( 0.0, 1.0));
86var_dump(0.0  === pow( 0.0, 2.0));
87var_dump(1.0  === pow( 1.0,-2.0));
88var_dump(1.0  === pow( 1.0,-1.0));
89var_dump(1.0  === pow( 1.0, 0.0));
90var_dump(1.0  === pow( 1.0, 1.0));
91var_dump(1.0  === pow( 1.0, 2.0));
92var_dump(0.25 === pow( 2.0,-2.0));
93var_dump(0.5  === pow( 2.0,-1.0));
94var_dump(1.0  === pow( 2.0, 0.0));
95var_dump(2.0  === pow( 2.0, 1.0));
96var_dump(4.0  === pow( 2.0, 2.0));
97var_dump(0.25 === pow(-2.0,-2));
98var_dump(-0.5 === pow(-2.0,-1));
99var_dump(1.0  === pow(-2.0, 0));
100var_dump(-2.0 === pow(-2.0, 1));
101var_dump(4.0  === pow(-2.0, 2));
102var_dump(1.0  === pow(-1.0,-2));
103var_dump(-1.0 === pow(-1.0,-1));
104var_dump(1.0  === pow(-1.0, 0));
105var_dump(-1.0 === pow(-1.0, 1));
106var_dump(1.0  === pow(-1.0, 2));
107var_dump(TRUE === is_infinite(pow( 0.0,-2)));
108var_dump(TRUE === is_infinite(pow( 0.0,-1)));
109var_dump(1.0  === pow( 0.0, 0));
110var_dump(0.0  === pow( 0.0, 1));
111var_dump(0.0  === pow( 0.0, 2));
112var_dump(1.0  === pow( 1.0,-2));
113var_dump(1.0  === pow( 1.0,-1));
114var_dump(1.0  === pow( 1.0, 0));
115var_dump(1.0  === pow( 1.0, 1));
116var_dump(1.0  === pow( 1.0, 2));
117var_dump(0.25 === pow( 2.0,-2));
118var_dump(0.5  === pow( 2.0,-1));
119var_dump(1.0  === pow( 2.0, 0));
120var_dump(2.0  === pow( 2.0, 1));
121var_dump(4.0  === pow( 2.0, 2));
122var_dump(2.0  === pow(   4, 0.5));
123var_dump(2.0  === pow( 4.0, 0.5));
124var_dump(3.0  === pow(  27, 1/3));
125var_dump(3.0  === pow(27.0, 1/3));
126var_dump(0.5  === pow(   4, -0.5));
127var_dump(0.5  === pow( 4.0, -0.5));
128var_dump(LONG_MAX-1 === pow(LONG_MAX-1,1));
129var_dump(LONG_MIN+1 === pow(LONG_MIN+1,1));
130var_dump(epsilon_equal( (LONG_MAX-1)*(LONG_MAX-1) , pow(LONG_MAX-1,2) ));
131var_dump(epsilon_equal( (LONG_MIN+1)*(LONG_MIN+1) , pow(LONG_MIN+1,2) ));
132var_dump((float)(LONG_MAX-1) === pow(LONG_MAX-1,1.0));
133var_dump((float)(LONG_MIN+1) === pow(LONG_MIN+1,1.0));
134var_dump(epsilon_equal( (LONG_MAX-1)*(LONG_MAX-1) , pow(LONG_MAX-1,2.0) ));
135var_dump(epsilon_equal( (LONG_MIN+1)*(LONG_MIN+1) , pow(LONG_MIN+1,2.0) ));
136var_dump(LONG_MAX === pow(LONG_MAX,1));
137var_dump(LONG_MIN === pow(LONG_MIN,1));
138var_dump(epsilon_equal( LONG_MAX*LONG_MAX , pow(LONG_MAX,2) ));
139var_dump(epsilon_equal( LONG_MIN*LONG_MIN , pow(LONG_MIN,2) ));
140var_dump((float)LONG_MAX === pow(LONG_MAX,1.0));
141var_dump((float)LONG_MIN === pow(LONG_MIN,1.0));
142var_dump(epsilon_equal( LONG_MAX*LONG_MAX , pow(LONG_MAX,2.0) ));
143var_dump(epsilon_equal( LONG_MIN*LONG_MIN , pow(LONG_MIN,2.0) ));
144
145?>
146--EXPECTF--
1471,1,0,0
148bool(true)
149bool(true)
150bool(true)
151bool(true)
152bool(true)
153bool(true)
154bool(true)
155bool(true)
156bool(true)
157bool(true)
158
159Deprecated: Power of base 0 and negative exponent is deprecated in %s on line %d
160bool(true)
161
162Deprecated: Power of base 0 and negative exponent is deprecated in %s on line %d
163bool(true)
164bool(true)
165bool(true)
166bool(true)
167bool(true)
168bool(true)
169bool(true)
170bool(true)
171bool(true)
172bool(true)
173bool(true)
174bool(true)
175bool(true)
176bool(true)
177bool(true)
178bool(true)
179bool(true)
180bool(true)
181bool(true)
182bool(true)
183bool(true)
184bool(true)
185bool(true)
186bool(true)
187
188Deprecated: Power of base 0 and negative exponent is deprecated in %s on line %d
189bool(true)
190
191Deprecated: Power of base 0 and negative exponent is deprecated in %s on line %d
192bool(true)
193bool(true)
194bool(true)
195bool(true)
196bool(true)
197bool(true)
198bool(true)
199bool(true)
200bool(true)
201bool(true)
202bool(true)
203bool(true)
204bool(true)
205bool(true)
206bool(true)
207bool(true)
208bool(true)
209bool(true)
210bool(true)
211bool(true)
212bool(true)
213bool(true)
214bool(true)
215bool(true)
216bool(true)
217bool(true)
218bool(true)
219bool(true)
220bool(true)
221bool(true)
222bool(true)
223
224Deprecated: Power of base 0 and negative exponent is deprecated in %s on line %d
225bool(true)
226
227Deprecated: Power of base 0 and negative exponent is deprecated in %s on line %d
228bool(true)
229bool(true)
230bool(true)
231bool(true)
232bool(true)
233bool(true)
234bool(true)
235bool(true)
236bool(true)
237bool(true)
238bool(true)
239bool(true)
240bool(true)
241bool(true)
242bool(true)
243bool(true)
244bool(true)
245bool(true)
246bool(true)
247bool(true)
248bool(true)
249bool(true)
250bool(true)
251bool(true)
252
253Deprecated: Power of base 0 and negative exponent is deprecated in %s on line %d
254bool(true)
255
256Deprecated: Power of base 0 and negative exponent is deprecated in %s on line %d
257bool(true)
258bool(true)
259bool(true)
260bool(true)
261bool(true)
262bool(true)
263bool(true)
264bool(true)
265bool(true)
266bool(true)
267bool(true)
268bool(true)
269bool(true)
270bool(true)
271bool(true)
272bool(true)
273bool(true)
274bool(true)
275bool(true)
276bool(true)
277bool(true)
278bool(true)
279bool(true)
280bool(true)
281bool(true)
282bool(true)
283bool(true)
284bool(true)
285bool(true)
286bool(true)
287bool(true)
288bool(true)
289bool(true)
290bool(true)
291bool(true)
292bool(true)
293