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Merge pull request #5383 from shuujii/floatNAN-0-should-be-FloatNAN

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`Float::NAN/0` should be `Float::NAN`; ref a0b3378b3
This commit is contained in:
Yukihiro "Matz" Matsumoto
2021-03-18 20:54:56 +09:00
committed by GitHub
parent a0b3378b36 6731f935cc
commit e5a3a37ae9
2 changed files with 59 additions and 12 deletions
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src/numeric.c
+1 -4
View File
@@ -25,7 +25,6 @@
#define floor(f) floorf(f)
#define ceil(f) ceilf(f)
#define fmod(x,y) fmodf(x,y)
#define copysign(x,y) copysignf(x,y)
#define FLO_TO_STR_PREC 8
#else
#define FLO_TO_STR_PREC 16
@@ -245,9 +244,7 @@ mrb_num_div_flo(mrb_state *mrb, mrb_float x, mrb_float y)
return NAN;
}
else {
mrb_float a = copysign(1.0, x);
mrb_float b = copysign(1.0, y);
return a * b * INFINITY;
return x * (signbit(y) ? -1.0 : 1.0) * INFINITY;
}
}
test/t/float.rb
+58 -8
View File
@@ -35,16 +35,66 @@ assert('Float#*', '15.2.9.3.3') do
end
assert('Float#/', '15.2.9.3.4') do
a = 3.123456789 / 3.123456789
b = 3.123456789 / 1
assert_float(1.0 , a)
assert_float(3.123456789, b)
assert_float(1.0, 3.123456789 / 3.123456789)
assert_float(3.123456789, 3.123456789 / 1)
assert_float(2.875, -5.75 / -2.0)
assert_float(-2.875, 5.75 / -2)
assert_float(-2.875, -5.75 / 2.0)
assert_float(Float::NAN, 0.0 / 0.0)
assert_float(Float::NAN, -0.0 / -0.0)
assert_float(Float::NAN, -0.0 / 0.0)
assert_float(Float::NAN, Float::NAN / Float::NAN)
assert_float(Float::NAN, Float::NAN / 0.0)
assert_float(Float::NAN, Float::NAN / -0.0)
assert_float(Float::NAN, Float::NAN / 2.0)
assert_float(Float::NAN, Float::NAN / -2.0)
assert_float(Float::NAN, 0.0 / Float::NAN)
assert_float(Float::NAN, -0.0 / Float::NAN)
assert_float(Float::NAN, 2.0 / Float::NAN)
assert_float(Float::NAN, -2.0 / Float::NAN)
assert_float(Float::NAN, Float::INFINITY / Float::INFINITY)
assert_float(Float::NAN, -Float::INFINITY / Float::INFINITY)
assert_float(Float::NAN, Float::INFINITY / -Float::INFINITY)
assert_float(Float::NAN, -Float::INFINITY / -Float::INFINITY)
assert_float(Float::INFINITY, 1.0 / 0.0)
assert_float(Float::INFINITY, -1.0 / -0.0)
assert_float(-Float::INFINITY, 1.0 / -0.0)
assert_float(-Float::INFINITY, -1.0 / 0.0)
assert_float(0.0, 1.0 / Float::INFINITY)
assert_float(0.0, -1.0 / -Float::INFINITY)
assert_float(-0.0, -1.0 / Float::INFINITY)
assert_float(-0.0, 1.0 / -Float::INFINITY)
end
assert('Float#quo') do
a = 3.123456789.quo(3.123456789)
assert_float(1.0 , a)
assert_float(1.0, 3.123456789.quo(3.123456789))
assert_float(3.123456789, 3.123456789.quo(1))
assert_float(2.875, -5.75.quo(-2.0))
assert_float(-2.875, 5.75.quo(-2))
assert_float(-2.875, -5.75.quo(2.0))
assert_float(Float::NAN, 0.0.quo(0.0))
assert_float(Float::NAN, -0.0.quo(-0.0))
assert_float(Float::NAN, -0.0.quo(0.0))
assert_float(Float::NAN, Float::NAN.quo(Float::NAN))
assert_float(Float::NAN, Float::NAN.quo(0.0))
assert_float(Float::NAN, Float::NAN.quo(-0.0))
assert_float(Float::NAN, Float::NAN.quo(2.0))
assert_float(Float::NAN, Float::NAN.quo(-2.0))
assert_float(Float::NAN, 0.0.quo(Float::NAN))
assert_float(Float::NAN, -0.0.quo(Float::NAN))
assert_float(Float::NAN, 2.0.quo(Float::NAN))
assert_float(Float::NAN, -2.0.quo(Float::NAN))
assert_float(Float::NAN, Float::INFINITY.quo(Float::INFINITY))
assert_float(Float::NAN, -Float::INFINITY.quo(Float::INFINITY))
assert_float(Float::NAN, Float::INFINITY.quo(-Float::INFINITY))
assert_float(Float::NAN, -Float::INFINITY.quo(-Float::INFINITY))
assert_float(Float::INFINITY, 1.0.quo(0.0))
assert_float(Float::INFINITY, -1.0.quo(-0.0))
assert_float(-Float::INFINITY, 1.0.quo(-0.0))
assert_float(-Float::INFINITY, -1.0.quo(0.0))
assert_float(0.0, 1.0.quo(Float::INFINITY))
assert_float(0.0, -1.0.quo(-Float::INFINITY))
assert_float(-0.0, -1.0.quo(Float::INFINITY))
assert_float(-0.0, 1.0.quo(-Float::INFINITY))
end
assert('Float#%', '15.2.9.3.5') do