1" test float functions
2
3if !has('float')
4  finish
5end
6
7func Test_abs()
8  call assert_equal(string(abs(1.23)), '1.23')
9  call assert_equal(string(abs(-1.23)), '1.23')
10  call assert_equal(string(abs(0.0)), '0.0')
11  call assert_equal(string(abs(1.0/(1.0/0.0))), '0.0')
12  call assert_equal(string(abs(-1.0/(1.0/0.0))), '0.0')
13  call assert_equal(string(abs(1.0/0.0)), 'inf')
14  call assert_equal(string(abs(-1.0/0.0)), 'inf')
15  call assert_equal(string(abs(0.0/0.0)), 'nan')
16endfunc
17
18func Test_sqrt()
19  call assert_equal(string(sqrt(0.0)), '0.0')
20  call assert_equal(string(sqrt(2.0)), '1.414214')
21  call assert_equal(string(sqrt(1.0/0.0)), 'inf')
22  call assert_equal(string(sqrt(-1.0)), 'nan')
23  call assert_equal(string(sqrt(0.0/0.0)), 'nan')
24endfunc
25
26func Test_log()
27  call assert_equal(string(log(1.0)), '0.0')
28  call assert_equal(string(log(0.5)), '-0.693147')
29  call assert_equal(string(log(0.0)), '-inf')
30  call assert_equal(string(log(-1.0)), 'nan')
31  call assert_equal(string(log(1.0/0.0)), 'inf')
32  call assert_equal(string(log(0.0/0.0)), 'nan')
33endfunc
34
35func Test_log10()
36  call assert_equal(string(log10(1.0)), '0.0')
37  call assert_equal(string(log10(100.0)), '2.0')
38  call assert_equal(string(log10(120.0)), '2.079181')
39  call assert_equal(string(log10(0.0)), '-inf')
40  call assert_equal(string(log10(-1.0)), 'nan')
41  call assert_equal(string(log10(1.0/0.0)), 'inf')
42  call assert_equal(string(log10(0.0/0.0)), 'nan')
43endfunc
44
45func Test_exp()
46  call assert_equal(string(exp(0.0)), '1.0')
47  call assert_equal(string(exp(2.0)), '7.389056')
48  call assert_equal(string(exp(-1.0)),'0.367879')
49  call assert_equal(string(exp(1.0/0.0)), 'inf')
50  call assert_equal(string(exp(-1.0/0.0)), '0.0')
51  call assert_equal(string(exp(0.0/0.0)), 'nan')
52endfunc
53
54func Test_sin()
55  call assert_equal(string(sin(0.0)), '0.0')
56  call assert_equal(string(sin(1.0)), '0.841471')
57  call assert_equal(string(sin(-0.5)), '-0.479426')
58  call assert_equal(string(sin(0.0/0.0)), 'nan')
59  call assert_equal(string(sin(1.0/0.0)), 'nan')
60  call assert_equal(string(sin(1.0/(1.0/0.0))), '0.0')
61  call assert_equal(string(sin(-1.0/(1.0/0.0))), '-0.0')
62endfunc
63
64func Test_asin()
65  call assert_equal(string(asin(0.0)), '0.0')
66  call assert_equal(string(asin(1.0)), '1.570796')
67  call assert_equal(string(asin(-0.5)), '-0.523599')
68  call assert_equal(string(asin(1.1)), 'nan')
69  call assert_equal(string(asin(1.0/0.0)), 'nan')
70  call assert_equal(string(asin(0.0/0.0)), 'nan')
71endfunc
72
73func Test_sinh()
74  call assert_equal(string(sinh(0.0)), '0.0')
75  call assert_equal(string(sinh(0.5)), '0.521095')
76  call assert_equal(string(sinh(-0.9)), '-1.026517')
77  call assert_equal(string(sinh(1.0/0.0)), 'inf')
78  call assert_equal(string(sinh(-1.0/0.0)), '-inf')
79  call assert_equal(string(sinh(0.0/0.0)), 'nan')
80endfunc
81
82func Test_cos()
83  call assert_equal(string(cos(0.0)), '1.0')
84  call assert_equal(string(cos(1.0)), '0.540302')
85  call assert_equal(string(cos(-0.5)), '0.877583')
86  call assert_equal(string(cos(0.0/0.0)), 'nan')
87  call assert_equal(string(cos(1.0/0.0)), 'nan')
88endfunc
89
90func Test_acos()
91  call assert_equal(string(acos(0.0)), '1.570796')
92  call assert_equal(string(acos(1.0)), '0.0')
93  call assert_equal(string(acos(-1.0)), '3.141593')
94  call assert_equal(string(acos(-0.5)), '2.094395')
95  call assert_equal(string(acos(1.1)), 'nan')
96  call assert_equal(string(acos(1.0/0.0)), 'nan')
97  call assert_equal(string(acos(0.0/0.0)), 'nan')
98endfunc
99
100func Test_cosh()
101  call assert_equal(string(cosh(0.0)), '1.0')
102  call assert_equal(string(cosh(0.5)), '1.127626')
103  call assert_equal(string(cosh(1.0/0.0)), 'inf')
104  call assert_equal(string(cosh(-1.0/0.0)), 'inf')
105  call assert_equal(string(cosh(0.0/0.0)), 'nan')
106endfunc
107
108func Test_tan()
109  call assert_equal(string(tan(0.0)), '0.0')
110  call assert_equal(string(tan(0.5)), '0.546302')
111  call assert_equal(string(tan(-0.5)), '-0.546302')
112  call assert_equal(string(tan(1.0/0.0)), 'nan')
113  call assert_equal(string(cos(0.0/0.0)), 'nan')
114  call assert_equal(string(tan(1.0/(1.0/0.0))), '0.0')
115  call assert_equal(string(tan(-1.0/(1.0/0.0))), '-0.0')
116endfunc
117
118func Test_atan()
119  call assert_equal(string(atan(0.0)), '0.0')
120  call assert_equal(string(atan(0.5)), '0.463648')
121  call assert_equal(string(atan(-1.0)), '-0.785398')
122  call assert_equal(string(atan(1.0/0.0)), '1.570796')
123  call assert_equal(string(atan(-1.0/0.0)), '-1.570796')
124  call assert_equal(string(atan(0.0/0.0)), 'nan')
125endfunc
126
127func Test_atan2()
128  call assert_equal(string(atan2(-1, -1)), '-2.356194')
129  call assert_equal(string(atan2(1, -1)), '2.356194')
130  call assert_equal(string(atan2(1.0, 1.0/0.0)), '0.0')
131  call assert_equal(string(atan2(1.0/0.0, 1.0)), '1.570796')
132  call assert_equal(string(atan2(0.0/0.0, 1.0)), 'nan')
133endfunc
134
135func Test_tanh()
136  call assert_equal(string(tanh(0.0)), '0.0')
137  call assert_equal(string(tanh(0.5)), '0.462117')
138  call assert_equal(string(tanh(-1.0)), '-0.761594')
139  call assert_equal(string(tanh(1.0/0.0)), '1.0')
140  call assert_equal(string(tanh(-1.0/0.0)), '-1.0')
141  call assert_equal(string(tanh(0.0/0.0)), 'nan')
142endfunc
143
144func Test_fmod()
145  call assert_equal(string(fmod(12.33, 1.22)), '0.13')
146  call assert_equal(string(fmod(-12.33, 1.22)), '-0.13')
147  call assert_equal(string(fmod(1.0/0.0, 1.0)), 'nan')
148  call assert_equal(string(fmod(1.0, 1.0/0.0)), '1.0')
149  call assert_equal(string(fmod(1.0, 0.0)), 'nan')
150endfunc
151
152func Test_pow()
153  call assert_equal(string(pow(0.0, 0.0)), '1.0')
154  call assert_equal(string(pow(2.0, 3.0)), '8.0')
155  call assert_equal(string(pow(2.0, 0.0/0.0)), 'nan')
156  call assert_equal(string(pow(0.0/0.0, 3.0)), 'nan')
157  call assert_equal(string(pow(0.0/0.0, 3.0)), 'nan')
158  call assert_equal(string(pow(2.0, 1.0/0.0)), 'inf')
159  call assert_equal(string(pow(1.0/0.0, 3.0)), 'inf')
160endfunc
161
162func Test_str2float()
163  call assert_equal(string(str2float('1')), '1.0')
164  call assert_equal(string(str2float('1.23')), '1.23')
165  call assert_equal(string(str2float('1.23abc')), '1.23')
166  call assert_equal(string(str2float('1e40')), '1.0e40')
167  call assert_equal(string(str2float('1e1000')), 'inf')
168  call assert_equal(string(str2float('inf')), 'inf')
169  call assert_equal(string(str2float('-inf')), '-inf')
170  call assert_equal(string(str2float('Inf')), 'inf')
171  call assert_equal(string(str2float('nan')), 'nan')
172  call assert_equal(string(str2float('NaN')), 'nan')
173endfunc
174
175func Test_floor()
176  call assert_equal(string(floor(2.0)), '2.0')
177  call assert_equal(string(floor(2.11)), '2.0')
178  call assert_equal(string(floor(2.99)), '2.0')
179  call assert_equal(string(floor(-2.11)), '-3.0')
180  call assert_equal(string(floor(-2.99)), '-3.0')
181  call assert_equal(string(floor(0.0/0.0)), 'nan')
182  call assert_equal(string(floor(1.0/0.0)), 'inf')
183  call assert_equal(string(floor(-1.0/0.0)), '-inf')
184endfunc
185
186func Test_ceil()
187  call assert_equal(string(ceil(2.0)), '2.0')
188  call assert_equal(string(ceil(2.11)), '3.0')
189  call assert_equal(string(ceil(2.99)), '3.0')
190  call assert_equal(string(ceil(-2.11)), '-2.0')
191  call assert_equal(string(ceil(-2.99)), '-2.0')
192  call assert_equal(string(ceil(0.0/0.0)), 'nan')
193  call assert_equal(string(ceil(1.0/0.0)), 'inf')
194  call assert_equal(string(ceil(-1.0/0.0)), '-inf')
195endfunc
196
197func Test_round()
198  call assert_equal(string(round(2.1)), '2.0')
199  call assert_equal(string(round(2.5)), '3.0')
200  call assert_equal(string(round(2.9)), '3.0')
201  call assert_equal(string(round(-2.1)), '-2.0')
202  call assert_equal(string(round(-2.5)), '-3.0')
203  call assert_equal(string(round(-2.9)), '-3.0')
204  call assert_equal(string(round(0.0/0.0)), 'nan')
205  call assert_equal(string(round(1.0/0.0)), 'inf')
206  call assert_equal(string(round(-1.0/0.0)), '-inf')
207endfunc
208
209func Test_trunc()
210  call assert_equal(string(trunc(2.1)), '2.0')
211  call assert_equal(string(trunc(2.5)), '2.0')
212  call assert_equal(string(trunc(2.9)), '2.0')
213  call assert_equal(string(trunc(-2.1)), '-2.0')
214  call assert_equal(string(trunc(-2.5)), '-2.0')
215  call assert_equal(string(trunc(-2.9)), '-2.0')
216  call assert_equal(string(trunc(0.0/0.0)), 'nan')
217  call assert_equal(string(trunc(1.0/0.0)), 'inf')
218  call assert_equal(string(trunc(-1.0/0.0)), '-inf')
219endfunc
220
221func Test_isnan()
222  call assert_equal(isnan(1.0), 0)
223  call assert_equal(isnan(0.0/0.0), 1)
224  call assert_equal(isnan(1.0/0.0), 0)
225  call assert_equal(isnan('a'), 0)
226  call assert_equal(isnan([]), 0)
227endfunc
228