1--TEST--
2Test log1p() function : usage variations - different data types as $arg argument
3--INI--
4precision=14
5--FILE--
6<?php
7/* Prototype  : float log1p  ( float $arg  )
8 * Description: Returns log(1 + number), computed in a way that is accurate even
9 *				when the value of number is close to zero
10 * Source code: ext/standard/math.c
11 */
12
13echo "*** Testing log1p() : usage variations ***\n";
14
15//get an unset variable
16$unset_var = 10;
17unset ($unset_var);
18
19// heredoc string
20$heredoc = <<<EOT
21abc
22xyz
23EOT;
24
25// get a class
26class classA
27{
28}
29
30// get a resource variable
31$fp = fopen(__FILE__, "r");
32
33$inputs = array(
34       // int data
35/*1*/  0,
36       1,
37       12345,
38       -2345,
39       2147483647,
40       -2147483648,
41
42       // float data
43/*7*/  10.5,
44       -10.5,
45       12.3456789E4,
46       12.3456789E-4,
47       .5,
48
49       // null data
50/*12*/ NULL,
51       null,
52
53       // boolean data
54/*14*/ true,
55       false,
56       TRUE,
57       FALSE,
58
59       // empty data
60/*18*/ "",
61       '',
62       array(),
63
64       // string data
65/*21*/ "abcxyz",
66       'abcxyz',
67       $heredoc,
68
69       // object data
70/*24*/ new classA(),
71
72       // undefined data
73/*25*/ @$undefined_var,
74
75       // unset data
76/*26*/ @$unset_var,
77
78       // resource variable
79/*27*/ $fp
80);
81
82// loop through each element of $inputs to check the behaviour of log1p()
83$iterator = 1;
84foreach($inputs as $input) {
85	echo "\n-- Iteration $iterator --\n";
86	var_dump(log1p($input));
87	$iterator++;
88};
89fclose($fp);
90?>
91===Done===
92--EXPECTF--
93*** Testing log1p() : usage variations ***
94
95-- Iteration 1 --
96float(0)
97
98-- Iteration 2 --
99float(0.69314718055995)
100
101-- Iteration 3 --
102float(9.4210874029538)
103
104-- Iteration 4 --
105float(NAN)
106
107-- Iteration 5 --
108float(21.487562597358)
109
110-- Iteration 6 --
111float(NAN)
112
113-- Iteration 7 --
114float(2.4423470353692)
115
116-- Iteration 8 --
117float(NAN)
118
119-- Iteration 9 --
120float(11.723654587153)
121
122-- Iteration 10 --
123float(0.0012338064377078)
124
125-- Iteration 11 --
126float(0.40546510810816)
127
128-- Iteration 12 --
129float(0)
130
131-- Iteration 13 --
132float(0)
133
134-- Iteration 14 --
135float(0.69314718055995)
136
137-- Iteration 15 --
138float(0)
139
140-- Iteration 16 --
141float(0.69314718055995)
142
143-- Iteration 17 --
144float(0)
145
146-- Iteration 18 --
147
148Warning: log1p() expects parameter 1 to be float, string given in %s on line %d
149NULL
150
151-- Iteration 19 --
152
153Warning: log1p() expects parameter 1 to be float, string given in %s on line %d
154NULL
155
156-- Iteration 20 --
157
158Warning: log1p() expects parameter 1 to be float, array given in %s on line %d
159NULL
160
161-- Iteration 21 --
162
163Warning: log1p() expects parameter 1 to be float, string given in %s on line %d
164NULL
165
166-- Iteration 22 --
167
168Warning: log1p() expects parameter 1 to be float, string given in %s on line %d
169NULL
170
171-- Iteration 23 --
172
173Warning: log1p() expects parameter 1 to be float, string given in %s on line %d
174NULL
175
176-- Iteration 24 --
177
178Warning: log1p() expects parameter 1 to be float, object given in %s on line %d
179NULL
180
181-- Iteration 25 --
182float(0)
183
184-- Iteration 26 --
185float(0)
186
187-- Iteration 27 --
188
189Warning: log1p() expects parameter 1 to be float, resource given in %s on line %d
190NULL
191===Done===