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Bram Moolenaar453b5762017-01-08 17:59:14 +01001" test float functions
2
3if !has('float')
4 finish
5end
6
7func Test_abs()
Bram Moolenaar62473612017-01-08 19:25:40 +01008 call assert_equal('1.23', string(abs(1.23)))
9 call assert_equal('1.23', string(abs(-1.23)))
10 call assert_equal('0.0', string(abs(0.0)))
11 call assert_equal('0.0', string(abs(1.0/(1.0/0.0))))
12 call assert_equal('0.0', string(abs(-1.0/(1.0/0.0))))
13 call assert_equal('inf', string(abs(1.0/0.0)))
14 call assert_equal('inf', string(abs(-1.0/0.0)))
15 call assert_equal('nan', string(abs(0.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +010016endfunc
17
18func Test_sqrt()
Bram Moolenaar62473612017-01-08 19:25:40 +010019 call assert_equal('0.0', string(sqrt(0.0)))
20 call assert_equal('1.414214', string(sqrt(2.0)))
21 call assert_equal('inf', string(sqrt(1.0/0.0)))
22 call assert_equal('nan', string(sqrt(-1.0)))
23 call assert_equal('nan', string(sqrt(0.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +010024endfunc
25
26func Test_log()
Bram Moolenaar62473612017-01-08 19:25:40 +010027 call assert_equal('0.0', string(log(1.0)))
28 call assert_equal('-0.693147', string(log(0.5)))
29 call assert_equal('-inf', string(log(0.0)))
30 call assert_equal('nan', string(log(-1.0)))
31 call assert_equal('inf', string(log(1.0/0.0)))
32 call assert_equal('nan', string(log(0.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +010033endfunc
34
35func Test_log10()
Bram Moolenaar62473612017-01-08 19:25:40 +010036 call assert_equal('0.0', string(log10(1.0)))
37 call assert_equal('2.0', string(log10(100.0)))
38 call assert_equal('2.079181', string(log10(120.0)))
39 call assert_equal('-inf', string(log10(0.0)))
40 call assert_equal('nan', string(log10(-1.0)))
41 call assert_equal('inf', string(log10(1.0/0.0)))
42 call assert_equal('nan', string(log10(0.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +010043endfunc
44
45func Test_exp()
Bram Moolenaar62473612017-01-08 19:25:40 +010046 call assert_equal('1.0', string(exp(0.0)))
47 call assert_equal('7.389056', string(exp(2.0)))
48 call assert_equal('0.367879', string(exp(-1.0)))
49 call assert_equal('inf', string(exp(1.0/0.0)))
50 call assert_equal('0.0', string(exp(-1.0/0.0)))
51 call assert_equal('nan', string(exp(0.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +010052endfunc
53
54func Test_sin()
Bram Moolenaar62473612017-01-08 19:25:40 +010055 call assert_equal('0.0', string(sin(0.0)))
56 call assert_equal('0.841471', string(sin(1.0)))
57 call assert_equal('-0.479426', string(sin(-0.5)))
58 call assert_equal('nan', string(sin(0.0/0.0)))
59 call assert_equal('nan', string(sin(1.0/0.0)))
60 call assert_equal('0.0', string(sin(1.0/(1.0/0.0))))
61 call assert_equal('-0.0', string(sin(-1.0/(1.0/0.0))))
Bram Moolenaar453b5762017-01-08 17:59:14 +010062endfunc
63
64func Test_asin()
Bram Moolenaar62473612017-01-08 19:25:40 +010065 call assert_equal('0.0', string(asin(0.0)))
66 call assert_equal('1.570796', string(asin(1.0)))
67 call assert_equal('-0.523599', string(asin(-0.5)))
68 call assert_equal('nan', string(asin(1.1)))
69 call assert_equal('nan', string(asin(1.0/0.0)))
70 call assert_equal('nan', string(asin(0.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +010071endfunc
72
73func Test_sinh()
Bram Moolenaar62473612017-01-08 19:25:40 +010074 call assert_equal('0.0', string(sinh(0.0)))
75 call assert_equal('0.521095', string(sinh(0.5)))
76 call assert_equal('-1.026517', string(sinh(-0.9)))
77 call assert_equal('inf', string(sinh(1.0/0.0)))
78 call assert_equal('-inf', string(sinh(-1.0/0.0)))
79 call assert_equal('nan', string(sinh(0.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +010080endfunc
81
82func Test_cos()
Bram Moolenaar62473612017-01-08 19:25:40 +010083 call assert_equal('1.0', string(cos(0.0)))
84 call assert_equal('0.540302', string(cos(1.0)))
85 call assert_equal('0.877583', string(cos(-0.5)))
86 call assert_equal('nan', string(cos(0.0/0.0)))
87 call assert_equal('nan', string(cos(1.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +010088endfunc
89
90func Test_acos()
Bram Moolenaar62473612017-01-08 19:25:40 +010091 call assert_equal('1.570796', string(acos(0.0)))
92 call assert_equal('0.0', string(acos(1.0)))
93 call assert_equal('3.141593', string(acos(-1.0)))
94 call assert_equal('2.094395', string(acos(-0.5)))
95 call assert_equal('nan', string(acos(1.1)))
96 call assert_equal('nan', string(acos(1.0/0.0)))
97 call assert_equal('nan', string(acos(0.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +010098endfunc
99
100func Test_cosh()
Bram Moolenaar62473612017-01-08 19:25:40 +0100101 call assert_equal('1.0', string(cosh(0.0)))
102 call assert_equal('1.127626', string(cosh(0.5)))
103 call assert_equal('inf', string(cosh(1.0/0.0)))
104 call assert_equal('inf', string(cosh(-1.0/0.0)))
105 call assert_equal('nan', string(cosh(0.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100106endfunc
107
108func Test_tan()
Bram Moolenaar62473612017-01-08 19:25:40 +0100109 call assert_equal('0.0', string(tan(0.0)))
110 call assert_equal('0.546302', string(tan(0.5)))
111 call assert_equal('-0.546302', string(tan(-0.5)))
112 call assert_equal('nan', string(tan(1.0/0.0)))
113 call assert_equal('nan', string(cos(0.0/0.0)))
114 call assert_equal('0.0', string(tan(1.0/(1.0/0.0))))
115 call assert_equal('-0.0', string(tan(-1.0/(1.0/0.0))))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100116endfunc
117
118func Test_atan()
Bram Moolenaar62473612017-01-08 19:25:40 +0100119 call assert_equal('0.0', string(atan(0.0)))
120 call assert_equal('0.463648', string(atan(0.5)))
121 call assert_equal('-0.785398', string(atan(-1.0)))
122 call assert_equal('1.570796', string(atan(1.0/0.0)))
123 call assert_equal('-1.570796', string(atan(-1.0/0.0)))
124 call assert_equal('nan', string(atan(0.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100125endfunc
126
127func Test_atan2()
Bram Moolenaar62473612017-01-08 19:25:40 +0100128 call assert_equal('-2.356194', string(atan2(-1, -1)))
129 call assert_equal('2.356194', string(atan2(1, -1)))
130 call assert_equal('0.0', string(atan2(1.0, 1.0/0.0)))
131 call assert_equal('1.570796', string(atan2(1.0/0.0, 1.0)))
132 call assert_equal('nan', string(atan2(0.0/0.0, 1.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100133endfunc
134
135func Test_tanh()
Bram Moolenaar62473612017-01-08 19:25:40 +0100136 call assert_equal('0.0', string(tanh(0.0)))
137 call assert_equal('0.462117', string(tanh(0.5)))
138 call assert_equal('-0.761594', string(tanh(-1.0)))
139 call assert_equal('1.0', string(tanh(1.0/0.0)))
140 call assert_equal('-1.0', string(tanh(-1.0/0.0)))
141 call assert_equal('nan', string(tanh(0.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100142endfunc
143
144func Test_fmod()
Bram Moolenaar62473612017-01-08 19:25:40 +0100145 call assert_equal('0.13', string(fmod(12.33, 1.22)))
146 call assert_equal('-0.13', string(fmod(-12.33, 1.22)))
147 call assert_equal('nan', string(fmod(1.0/0.0, 1.0)))
148 " On Windows we get "nan" instead of 1.0, accept both.
149 let res = string(fmod(1.0, 1.0/0.0))
150 if res != 'nan'
151 call assert_equal('1.0', res)
152 endif
153 call assert_equal('nan', string(fmod(1.0, 0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100154endfunc
155
156func Test_pow()
Bram Moolenaar62473612017-01-08 19:25:40 +0100157 call assert_equal('1.0', string(pow(0.0, 0.0)))
158 call assert_equal('8.0', string(pow(2.0, 3.0)))
159 call assert_equal('nan', string(pow(2.0, 0.0/0.0)))
160 call assert_equal('nan', string(pow(0.0/0.0, 3.0)))
161 call assert_equal('nan', string(pow(0.0/0.0, 3.0)))
162 call assert_equal('inf', string(pow(2.0, 1.0/0.0)))
163 call assert_equal('inf', string(pow(1.0/0.0, 3.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100164endfunc
165
166func Test_str2float()
Bram Moolenaar62473612017-01-08 19:25:40 +0100167 call assert_equal('1.0', string(str2float('1')))
168 call assert_equal('1.23', string(str2float('1.23')))
169 call assert_equal('1.23', string(str2float('1.23abc')))
170 call assert_equal('1.0e40', string(str2float('1e40')))
171 call assert_equal('inf', string(str2float('1e1000')))
172 call assert_equal('inf', string(str2float('inf')))
173 call assert_equal('-inf', string(str2float('-inf')))
174 call assert_equal('inf', string(str2float('Inf')))
175 call assert_equal('nan', string(str2float('nan')))
176 call assert_equal('nan', string(str2float('NaN')))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100177endfunc
178
179func Test_floor()
Bram Moolenaar62473612017-01-08 19:25:40 +0100180 call assert_equal('2.0', string(floor(2.0)))
181 call assert_equal('2.0', string(floor(2.11)))
182 call assert_equal('2.0', string(floor(2.99)))
183 call assert_equal('-3.0', string(floor(-2.11)))
184 call assert_equal('-3.0', string(floor(-2.99)))
185 call assert_equal('nan', string(floor(0.0/0.0)))
186 call assert_equal('inf', string(floor(1.0/0.0)))
187 call assert_equal('-inf', string(floor(-1.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100188endfunc
189
190func Test_ceil()
Bram Moolenaar62473612017-01-08 19:25:40 +0100191 call assert_equal('2.0', string(ceil(2.0)))
192 call assert_equal('3.0', string(ceil(2.11)))
193 call assert_equal('3.0', string(ceil(2.99)))
194 call assert_equal('-2.0', string(ceil(-2.11)))
195 call assert_equal('-2.0', string(ceil(-2.99)))
196 call assert_equal('nan', string(ceil(0.0/0.0)))
197 call assert_equal('inf', string(ceil(1.0/0.0)))
198 call assert_equal('-inf', string(ceil(-1.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100199endfunc
200
201func Test_round()
Bram Moolenaar62473612017-01-08 19:25:40 +0100202 call assert_equal('2.0', string(round(2.1)))
203 call assert_equal('3.0', string(round(2.5)))
204 call assert_equal('3.0', string(round(2.9)))
205 call assert_equal('-2.0', string(round(-2.1)))
206 call assert_equal('-3.0', string(round(-2.5)))
207 call assert_equal('-3.0', string(round(-2.9)))
208 call assert_equal('nan', string(round(0.0/0.0)))
209 call assert_equal('inf', string(round(1.0/0.0)))
210 call assert_equal('-inf', string(round(-1.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100211endfunc
212
213func Test_trunc()
Bram Moolenaar62473612017-01-08 19:25:40 +0100214 call assert_equal('2.0', string(trunc(2.1)))
215 call assert_equal('2.0', string(trunc(2.5)))
216 call assert_equal('2.0', string(trunc(2.9)))
217 call assert_equal('-2.0', string(trunc(-2.1)))
218 call assert_equal('-2.0', string(trunc(-2.5)))
219 call assert_equal('-2.0', string(trunc(-2.9)))
220 call assert_equal('nan', string(trunc(0.0/0.0)))
221 call assert_equal('inf', string(trunc(1.0/0.0)))
222 call assert_equal('-inf', string(trunc(-1.0/0.0)))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100223endfunc
224
225func Test_isnan()
Bram Moolenaar62473612017-01-08 19:25:40 +0100226 call assert_equal(0, isnan(1.0))
227 call assert_equal(1, isnan(0.0/0.0))
228 call assert_equal(0, isnan(1.0/0.0))
229 call assert_equal(0, isnan('a'))
230 call assert_equal(0, isnan([]))
Bram Moolenaar453b5762017-01-08 17:59:14 +0100231endfunc