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##
# Float ISO Test
assert('Float', '15.2.9') do
Float.class == Class
end
assert('Float superclass', '15.2.9.2') do
Float.superclass == Numeric
end
assert('Float#+', '15.2.9.3.1') do
a = 3.123456788 + 0.000000001
b = 3.123456789 + 1
check_float(a, 3.123456789) and
check_float(b, 4.123456789)
end
assert('Float#-', '15.2.9.3.2') do
a = 3.123456790 - 0.000000001
b = 5.123456789 - 1
check_float(a, 3.123456789) and
check_float(b, 4.123456789)
end
assert('Float#*', '15.2.9.3.3') do
a = 3.123456789 * 3.123456789
b = 3.123456789 * 1
check_float(a, 9.75598231275019) and
check_float(b, 3.123456789)
end
assert('Float#/', '15.2.9.3.4') do
a = 3.123456789 / 3.123456789
b = 3.123456789 / 1
check_float(a, 1.0) and
check_float(b, 3.123456789)
end
assert('Float#%', '15.2.9.3.5') do
a = 3.123456789 % 3.123456789
b = 3.123456789 % 1
check_float(a, 0.0) and
check_float(b, 0.123456789)
end
assert('Float#<=>', '15.2.9.3.6') do
a = 3.123456789 <=> 3.123456788
b = 3.123456789 <=> 3.123456789
c = 3.123456789 <=> 3.123456790
a2 = 3.123456789 <=> 3
c2 = 3.123456789 <=> 4
a == 1 and b == 0 and c == -1 and
a2 == 1 and c2 == -1
end
assert('Float#==', '15.2.9.3.7') do
3.1 == 3.1 and not 3.1 == 3.2
end
assert('Float#ceil', '15.2.9.3.8') do
a = 3.123456789.ceil
b = 3.0.ceil
c = -3.123456789.ceil
d = -3.0.ceil
a == 4 and b == 3 and c == -3 and d == -3
end
assert('Float#finite?', '15.2.9.3.9') do
3.123456789.finite? and
not (1.0 / 0.0).finite?
end
assert('Float#floor', '15.2.9.3.10') do
a = 3.123456789.floor
b = 3.0.floor
c = -3.123456789.floor
d = -3.0.floor
a == 3 and b == 3 and c == -4 and d == -3
end
assert('Float#infinite?', '15.2.9.3.11') do
a = 3.123456789.infinite?
b = (1.0 / 0.0).infinite?
c = (-1.0 / 0.0).infinite?
a == nil and b == 1 and c == -1
end
assert('Float#round', '15.2.9.3.12') do
a = 3.123456789.round
b = 3.5.round
c = 3.499999999.round
d = (-3.123456789).round
e = (-3.5).round
f = 12345.67.round(-1)
g = 3.123456789.round(0)
h = 3.123456789.round(1)
i = 3.123456789.round(4)
a == 3 and b == 4 and c == 3 and d == -3 and e == -4 and
f == 12350 and g == 3 and h == 3.1 and i == 3.1235
end
assert('Float#to_f', '15.2.9.3.13') do
a = 3.123456789
check_float(a.to_f, a)
end
assert('Float#to_i', '15.2.9.3.14') do
3.123456789.to_i == 3
end
assert('Float#truncate', '15.2.9.3.15') do
3.123456789.truncate == 3 and -3.1.truncate == -3
end
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