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" test float functions
if !has('float')
finish
end
func Test_abs()
call assert_equal('1.23', string(abs(1.23)))
call assert_equal('1.23', string(abs(-1.23)))
call assert_equal('0.0', string(abs(0.0)))
call assert_equal('0.0', string(abs(1.0/(1.0/0.0))))
call assert_equal('0.0', string(abs(-1.0/(1.0/0.0))))
call assert_equal("str2float('inf')", string(abs(1.0/0.0)))
call assert_equal("str2float('inf')", string(abs(-1.0/0.0)))
call assert_equal("str2float('nan')", string(abs(0.0/0.0)))
endfunc
func Test_sqrt()
call assert_equal('0.0', string(sqrt(0.0)))
call assert_equal('1.414214', string(sqrt(2.0)))
call assert_equal("str2float('inf')", string(sqrt(1.0/0.0)))
call assert_equal("str2float('nan')", string(sqrt(-1.0)))
call assert_equal("str2float('nan')", string(sqrt(0.0/0.0)))
endfunc
func Test_log()
call assert_equal('0.0', string(log(1.0)))
call assert_equal('-0.693147', string(log(0.5)))
call assert_equal("-str2float('inf')", string(log(0.0)))
call assert_equal("str2float('nan')", string(log(-1.0)))
call assert_equal("str2float('inf')", string(log(1.0/0.0)))
call assert_equal("str2float('nan')", string(log(0.0/0.0)))
endfunc
func Test_log10()
call assert_equal('0.0', string(log10(1.0)))
call assert_equal('2.0', string(log10(100.0)))
call assert_equal('2.079181', string(log10(120.0)))
call assert_equal("-str2float('inf')", string(log10(0.0)))
call assert_equal("str2float('nan')", string(log10(-1.0)))
call assert_equal("str2float('inf')", string(log10(1.0/0.0)))
call assert_equal("str2float('nan')", string(log10(0.0/0.0)))
endfunc
func Test_exp()
call assert_equal('1.0', string(exp(0.0)))
call assert_equal('7.389056', string(exp(2.0)))
call assert_equal('0.367879', string(exp(-1.0)))
call assert_equal("str2float('inf')", string(exp(1.0/0.0)))
call assert_equal('0.0', string(exp(-1.0/0.0)))
call assert_equal("str2float('nan')", string(exp(0.0/0.0)))
endfunc
func Test_sin()
call assert_equal('0.0', string(sin(0.0)))
call assert_equal('0.841471', string(sin(1.0)))
call assert_equal('-0.479426', string(sin(-0.5)))
call assert_equal("str2float('nan')", string(sin(0.0/0.0)))
call assert_equal("str2float('nan')", string(sin(1.0/0.0)))
call assert_equal('0.0', string(sin(1.0/(1.0/0.0))))
call assert_equal('-0.0', string(sin(-1.0/(1.0/0.0))))
endfunc
func Test_asin()
call assert_equal('0.0', string(asin(0.0)))
call assert_equal('1.570796', string(asin(1.0)))
call assert_equal('-0.523599', string(asin(-0.5)))
call assert_equal("str2float('nan')", string(asin(1.1)))
call assert_equal("str2float('nan')", string(asin(1.0/0.0)))
call assert_equal("str2float('nan')", string(asin(0.0/0.0)))
endfunc
func Test_sinh()
call assert_equal('0.0', string(sinh(0.0)))
call assert_equal('0.521095', string(sinh(0.5)))
call assert_equal('-1.026517', string(sinh(-0.9)))
call assert_equal("str2float('inf')", string(sinh(1.0/0.0)))
call assert_equal("-str2float('inf')", string(sinh(-1.0/0.0)))
call assert_equal("str2float('nan')", string(sinh(0.0/0.0)))
endfunc
func Test_cos()
call assert_equal('1.0', string(cos(0.0)))
call assert_equal('0.540302', string(cos(1.0)))
call assert_equal('0.877583', string(cos(-0.5)))
call assert_equal("str2float('nan')", string(cos(0.0/0.0)))
call assert_equal("str2float('nan')", string(cos(1.0/0.0)))
endfunc
func Test_acos()
call assert_equal('1.570796', string(acos(0.0)))
call assert_equal('0.0', string(acos(1.0)))
call assert_equal('3.141593', string(acos(-1.0)))
call assert_equal('2.094395', string(acos(-0.5)))
call assert_equal("str2float('nan')", string(acos(1.1)))
call assert_equal("str2float('nan')", string(acos(1.0/0.0)))
call assert_equal("str2float('nan')", string(acos(0.0/0.0)))
endfunc
func Test_cosh()
call assert_equal('1.0', string(cosh(0.0)))
call assert_equal('1.127626', string(cosh(0.5)))
call assert_equal("str2float('inf')", string(cosh(1.0/0.0)))
call assert_equal("str2float('inf')", string(cosh(-1.0/0.0)))
call assert_equal("str2float('nan')", string(cosh(0.0/0.0)))
endfunc
func Test_tan()
call assert_equal('0.0', string(tan(0.0)))
call assert_equal('0.546302', string(tan(0.5)))
call assert_equal('-0.546302', string(tan(-0.5)))
call assert_equal("str2float('nan')", string(tan(1.0/0.0)))
call assert_equal("str2float('nan')", string(cos(0.0/0.0)))
call assert_equal('0.0', string(tan(1.0/(1.0/0.0))))
call assert_equal('-0.0', string(tan(-1.0/(1.0/0.0))))
endfunc
func Test_atan()
call assert_equal('0.0', string(atan(0.0)))
call assert_equal('0.463648', string(atan(0.5)))
call assert_equal('-0.785398', string(atan(-1.0)))
call assert_equal('1.570796', string(atan(1.0/0.0)))
call assert_equal('-1.570796', string(atan(-1.0/0.0)))
call assert_equal("str2float('nan')", string(atan(0.0/0.0)))
endfunc
func Test_atan2()
call assert_equal('-2.356194', string(atan2(-1, -1)))
call assert_equal('2.356194', string(atan2(1, -1)))
call assert_equal('0.0', string(atan2(1.0, 1.0/0.0)))
call assert_equal('1.570796', string(atan2(1.0/0.0, 1.0)))
call assert_equal("str2float('nan')", string(atan2(0.0/0.0, 1.0)))
endfunc
func Test_tanh()
call assert_equal('0.0', string(tanh(0.0)))
call assert_equal('0.462117', string(tanh(0.5)))
call assert_equal('-0.761594', string(tanh(-1.0)))
call assert_equal('1.0', string(tanh(1.0/0.0)))
call assert_equal('-1.0', string(tanh(-1.0/0.0)))
call assert_equal("str2float('nan')", string(tanh(0.0/0.0)))
endfunc
func Test_fmod()
call assert_equal('0.13', string(fmod(12.33, 1.22)))
call assert_equal('-0.13', string(fmod(-12.33, 1.22)))
call assert_equal("str2float('nan')", string(fmod(1.0/0.0, 1.0)))
" On Windows we get "nan" instead of 1.0, accept both.
let res = string(fmod(1.0, 1.0/0.0))
if res != "str2float('nan')"
call assert_equal('1.0', res)
endif
call assert_equal("str2float('nan')", string(fmod(1.0, 0.0)))
endfunc
func Test_pow()
call assert_equal('1.0', string(pow(0.0, 0.0)))
call assert_equal('8.0', string(pow(2.0, 3.0)))
call assert_equal("str2float('nan')", string(pow(2.0, 0.0/0.0)))
call assert_equal("str2float('nan')", string(pow(0.0/0.0, 3.0)))
call assert_equal("str2float('nan')", string(pow(0.0/0.0, 3.0)))
call assert_equal("str2float('inf')", string(pow(2.0, 1.0/0.0)))
call assert_equal("str2float('inf')", string(pow(1.0/0.0, 3.0)))
endfunc
func Test_str2float()
call assert_equal('1.0', string(str2float('1')))
call assert_equal('1.23', string(str2float('1.23')))
call assert_equal('1.23', string(str2float('1.23abc')))
call assert_equal('1.0e40', string(str2float('1e40')))
call assert_equal("str2float('inf')", string(str2float('1e1000')))
call assert_equal("str2float('inf')", string(str2float('inf')))
call assert_equal("-str2float('inf')", string(str2float('-inf')))
call assert_equal("str2float('inf')", string(str2float('Inf')))
call assert_equal("str2float('nan')", string(str2float('nan')))
call assert_equal("str2float('nan')", string(str2float('NaN')))
endfunc
func Test_floor()
call assert_equal('2.0', string(floor(2.0)))
call assert_equal('2.0', string(floor(2.11)))
call assert_equal('2.0', string(floor(2.99)))
call assert_equal('-3.0', string(floor(-2.11)))
call assert_equal('-3.0', string(floor(-2.99)))
call assert_equal("str2float('nan')", string(floor(0.0/0.0)))
call assert_equal("str2float('inf')", string(floor(1.0/0.0)))
call assert_equal("-str2float('inf')", string(floor(-1.0/0.0)))
endfunc
func Test_ceil()
call assert_equal('2.0', string(ceil(2.0)))
call assert_equal('3.0', string(ceil(2.11)))
call assert_equal('3.0', string(ceil(2.99)))
call assert_equal('-2.0', string(ceil(-2.11)))
call assert_equal('-2.0', string(ceil(-2.99)))
call assert_equal("str2float('nan')", string(ceil(0.0/0.0)))
call assert_equal("str2float('inf')", string(ceil(1.0/0.0)))
call assert_equal("-str2float('inf')", string(ceil(-1.0/0.0)))
endfunc
func Test_round()
call assert_equal('2.0', string(round(2.1)))
call assert_equal('3.0', string(round(2.5)))
call assert_equal('3.0', string(round(2.9)))
call assert_equal('-2.0', string(round(-2.1)))
call assert_equal('-3.0', string(round(-2.5)))
call assert_equal('-3.0', string(round(-2.9)))
call assert_equal("str2float('nan')", string(round(0.0/0.0)))
call assert_equal("str2float('inf')", string(round(1.0/0.0)))
call assert_equal("-str2float('inf')", string(round(-1.0/0.0)))
endfunc
func Test_trunc()
call assert_equal('2.0', string(trunc(2.1)))
call assert_equal('2.0', string(trunc(2.5)))
call assert_equal('2.0', string(trunc(2.9)))
call assert_equal('-2.0', string(trunc(-2.1)))
call assert_equal('-2.0', string(trunc(-2.5)))
call assert_equal('-2.0', string(trunc(-2.9)))
call assert_equal("str2float('nan')", string(trunc(0.0/0.0)))
call assert_equal("str2float('inf')", string(trunc(1.0/0.0)))
call assert_equal("-str2float('inf')", string(trunc(-1.0/0.0)))
endfunc
func Test_isnan()
throw 'skipped: Nvim does not support isnan()'
call assert_equal(0, isnan(1.0))
call assert_equal(1, isnan(0.0/0.0))
call assert_equal(0, isnan(1.0/0.0))
call assert_equal(0, isnan('a'))
call assert_equal(0, isnan([]))
endfunc
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