Initial project import

tools/v/vlib/builtin/float_test.v

@@ -0,0 +1,313 @@
+import math
+
+fn test_float_decl() {
+	// TODO: ARM64 backend doesn't support typeof()
+	// z := 1f
+	// assert z > 0
+	x1 := 1e10
+	x2 := -2e16
+	x3 := 1e-15
+	x4 := -9e-4
+	// assert typeof(x1).name == 'f64'
+	// assert typeof(x2).name == 'f64'
+	// assert typeof(x3).name == 'f64'
+	// assert typeof(x4).name == 'f64'
+	x5 := 4e108
+	x6 := -7e99
+	x7 := 3e-205
+	x8 := -6e-147
+	// assert typeof(x5).name == 'f64'
+	// assert typeof(x6).name == 'f64'
+	// assert typeof(x7).name == 'f64'
+	// assert typeof(x8).name == 'f64'
+	x9 := 312874834.77
+	x10 := -22399994.06
+	x11 := 0.0000000019
+	x12 := -0.00000000008
+	// assert typeof(x9).name == 'f64'
+	// assert typeof(x10).name == 'f64'
+	// assert typeof(x11).name == 'f64'
+	// assert typeof(x12).name == 'f64'
+	x13 := 34234234809890890898903213154353453453253253243432413232228908902183918392183902432432438980380123021983901392183921389083913890389089031.0
+	x14 := -39999999999999999999222212128182813294989082302832183928343325325233253242312331324392839238239829389038097438248932789371837218372837293.8
+	x15 := 0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002
+	x16 := -0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004
+	// assert typeof(x13).name == 'f64'
+	// assert typeof(x14).name == 'f64'
+	// assert typeof(x15).name == 'f64'
+	// assert typeof(x16).name == 'f64'
+	_ = x1
+	_ = x2
+	_ = x3
+	_ = x4
+	_ = x5
+	_ = x6
+	_ = x7
+	_ = x8
+	_ = x9
+	_ = x10
+	_ = x11
+	_ = x12
+	_ = x13
+	_ = x14
+	_ = x15
+	_ = x16
+}
+
+fn test_f32_equal_operator() {
+	b := f32(1.0)
+	mut a := f32(1.0)
+	a += 0.0000019073486328125
+	assert a != b
+	a -= 0.0000019073486328125
+	assert a == b
+	assert -1 == 1 * -1
+	assert -1.0 == 1.0 * -1.0
+	a = 1
+	a += 0.0000019073486328125
+	a -= 0.0000019073486328125
+	assert a == f32(1.0)
+	a += 0.000001
+	assert !(a < f32(1))
+	assert !(a <= f32(1))
+	assert a > f32(1)
+	assert a >= 1
+	assert a != 1
+	f := 1.2
+	ab := int(f)
+	assert ab == 1
+	e := f32(-1.602176634e-19)
+	m := f32(9.1093837015e-31)
+	assert e < m
+	assert e <= m
+	assert e != m
+	assert !(e == m)
+	assert m >= e
+	assert m > e
+}
+
+fn test_f64_equal_operator() {
+	b := 1.0
+	mut a := 1.0
+	a += 0.0000019073486328125
+	assert a != b
+	a -= 0.0000019073486328125
+	assert a == b
+	e := -1.602176634e-19
+	m := 9.1093837015e-31
+	assert e < m
+	assert e <= m
+	assert e != m
+	assert !(e == m)
+	assert m >= e
+	assert m > e
+}
+
+fn test_f64_eq_epsilon() {
+	a := 1.662248544459347e308
+	b := 1.662248544459348e308
+	x := 1.662248544459352e308
+	assert a != b
+	assert a.eq_epsilon(b)
+	assert b.eq_epsilon(a)
+	assert (-a).eq_epsilon(-b)
+	assert (-b).eq_epsilon(-a)
+	assert !a.eq_epsilon(x)
+	assert !x.eq_epsilon(a)
+	assert !a.eq_epsilon(-b)
+	assert !(-a).eq_epsilon(b)
+	c := 1.5367748374385438503
+	d := -1.5367748374385447257
+	z := 1.5367748378943546
+	assert c != -d
+	assert c.eq_epsilon(-d)
+	assert d.eq_epsilon(-c)
+	assert !c.eq_epsilon(z)
+	assert !z.eq_epsilon(c)
+	e := 2.531434251587394233e-308
+	f := 2.531434251587395675e-308
+	y := 2.531434251587398934e-308
+	assert e != f
+	assert e.eq_epsilon(f)
+	assert (-f).eq_epsilon(-e)
+	assert !e.eq_epsilon(y)
+	assert !(-y).eq_epsilon(-e)
+}
+
+fn test_f32_eq_epsilon() {
+	a := f32(3.244331e38)
+	b := f32(3.244332e38)
+	x := f32(3.244338e38)
+	assert a != b
+	assert a.eq_epsilon(b)
+	assert b.eq_epsilon(a)
+	assert (-a).eq_epsilon(-b)
+	assert (-b).eq_epsilon(-a)
+	assert !a.eq_epsilon(x)
+	assert !(-x).eq_epsilon(-a)
+	assert !a.eq_epsilon(-b)
+	assert !(-a).eq_epsilon(b)
+	c := f32(0.9546742)
+	d := f32(-0.9546745)
+	z := f32(0.9546754)
+	assert c != -d
+	assert c.eq_epsilon(-d)
+	assert d.eq_epsilon(-c)
+	assert !c.eq_epsilon(z)
+	assert !z.eq_epsilon(c)
+	e := f32(-1.5004390e-38)
+	f := f32(-1.5004395e-38)
+	y := f32(-1.5004409e-38)
+	assert e != f
+	assert e.eq_epsilon(f)
+	assert (-f).eq_epsilon(-e)
+	assert !e.eq_epsilon(y)
+	assert !(-y).eq_epsilon(-e)
+}
+
+fn test_float_point_formatting_rounding() {
+	float_1 := 462.18
+	float_2 := 45.02227
+	float_3 := 238.5
+	float_4 := 239.5
+
+	assert '${float_1:0.0f}' == '462'
+	assert '${float_2:0.0f}' == '45'
+	assert '${float_3:0.0f}' == '239'
+	assert '${float_4:0.0f}' == '240'
+
+	assert '${239.5555551:0.0f}' == '240'
+	assert '${239.5555551:0.1f}' == '239.6'
+	assert '${239.5555551:0.2f}' == '239.56'
+	assert '${239.5555551:0.3f}' == '239.556'
+	assert '${239.5555551:0.4f}' == '239.5556'
+	assert '${239.5555551:0.5f}' == '239.55556'
+	assert '${239.5555551:0.6f}' == '239.555555'
+	assert '${239.5555551:0.7f}' == '239.5555551'
+	assert '${239.5555551:0.8f}' == '239.55555510'
+	assert '${239.5555551:0.9f}' == '239.555555100'
+	assert '${239.5555551:0.10f}' == '239.5555551000'
+	assert '${239.5555551:0.11f}' == '239.55555510000'
+
+	assert '${239.5:0.0f}' == '240'
+	assert '${239.55:0.1f}' == '239.6'
+	assert '${239.555:0.2f}' == '239.56'
+	assert '${239.5555:0.3f}' == '239.555' // Note: 5 ?
+	assert '${239.55555:0.4f}' == '239.5556'
+	assert '${239.555555:0.5f}' == '239.55555' // Note: 5 ?
+	assert '${239.5555555:0.6f}' == '239.555556' // after this, it is all ending in 6
+	assert '${239.55555555:0.7f}' == '239.5555556'
+	assert '${239.555555555:0.8f}' == '239.55555556'
+	assert '${239.5555555555:0.9f}' == '239.555555556'
+	assert '${239.55555555555:0.10f}' == '239.5555555556'
+
+	assert '${239.5550:0.3f}' == '239.555'
+	assert '${239.5551:0.3f}' == '239.555'
+	assert '${239.5552:0.3f}' == '239.555'
+	assert '${239.5553:0.3f}' == '239.555'
+	assert '${239.5554:0.3f}' == '239.555'
+	assert '${239.5555:0.3f}' == '239.555'
+	assert '${239.5556:0.3f}' == '239.556' // rounding at last 6 ?
+	assert '${239.5557:0.3f}' == '239.556'
+	assert '${239.5558:0.3f}' == '239.556'
+	assert '${239.5559:0.3f}' == '239.556'
+
+	assert '${239.5555551:0.6f}' == '239.555555'
+	assert '${239.5555552:0.6f}' == '239.555555'
+	assert '${239.5555553:0.6f}' == '239.555555'
+	assert '${239.5555554:0.6f}' == '239.555555'
+	assert '${239.5555555:0.6f}' == '239.555556'
+	assert '${239.5555556:0.6f}' == '239.555556'
+	assert '${239.5555557:0.6f}' == '239.555556'
+	assert '${239.5555558:0.6f}' == '239.555556'
+	assert '${239.5555559:0.6f}' == '239.555556'
+
+	assert '${239.55555555555:0.10f}' == '239.5555555556'
+	assert '${239.55555555555:0.9f}' == '239.555555556'
+	assert '${239.55555555555:0.8f}' == '239.55555556'
+	assert '${239.55555555555:0.7f}' == '239.5555556'
+	assert '${239.55555555555:0.6f}' == '239.555556'
+	assert '${239.55555555555:0.5f}' == '239.55556'
+	assert '${239.55555555555:0.4f}' == '239.5556'
+	assert '${239.55555555555:0.3f}' == '239.556'
+	assert '${239.55555555555:0.2f}' == '239.56'
+	assert '${239.55555555555:0.1f}' == '239.6'
+	assert '${239.55555555555:0.0f}' == '240'
+
+	assert '${-239.55555555555:0.10f}' == '-239.5555555556'
+	assert '${-239.55555555555:0.9f}' == '-239.555555556'
+	assert '${-239.55555555555:0.8f}' == '-239.55555556'
+	assert '${-239.55555555555:0.7f}' == '-239.5555556'
+	assert '${-239.55555555555:0.6f}' == '-239.555556'
+	assert '${-239.55555555555:0.5f}' == '-239.55556'
+	assert '${-239.55555555555:0.4f}' == '-239.5556'
+	assert '${-239.55555555555:0.3f}' == '-239.556'
+	assert '${-239.55555555555:0.2f}' == '-239.56'
+	assert '${-239.55555555555:0.1f}' == '-239.6'
+	assert '${-239.55555555555:0.0f}' == '-240'
+}
+
+fn test_float_zero_str() {
+	f1 := f32(0.0)
+	f2 := 0.0
+	assert f1.str() == '0.0'
+	assert '${f1}' == '0.0'
+	assert f2.str() == '0.0'
+	assert '${f2}' == '0.0'
+}
+
+fn test_f32_zero_chars() {
+	bits := math.f32_bits('-0.0'.f32())
+	assert math.f32_bits('-0 ms'.f32()) == bits
+	assert math.f32_bits('-0.0 ms'.f32()) == bits
+	assert math.f32_bits('-0.000 ms'.f32()) == bits
+	assert math.f32_bits('0 ms'.f32()) == 0
+	assert math.f32_bits('0.0 ms'.f32()) == 0
+	assert math.f32_bits('0.000 ms'.f32()) == 0
+	assert math.f32_bits('-0'.f32()) == bits
+	assert math.f32_bits('-0.0'.f32()) == bits
+	assert math.f32_bits('-0.000'.f32()) == bits
+	assert math.f32_bits('0'.f32()) == 0
+	assert math.f32_bits('0.0'.f32()) == 0
+	assert math.f32_bits('0.000'.f32()) == 0
+	assert '-0 ms'.f32().str() == '-0.0'
+	assert '-0.0 ms'.f32().str() == '-0.0'
+	assert '-0.000 ms'.f32().str() == '-0.0'
+	assert '0 ms'.f32().str() == '0.0'
+	assert '0.0 ms'.f32().str() == '0.0'
+	assert '0.000 ms'.f32().str() == '0.0'
+	assert '-0'.f32().str() == '-0.0'
+	assert '-0.0'.f32().str() == '-0.0'
+	assert '-0.000'.f32().str() == '-0.0'
+	assert '0'.f32().str() == '0.0'
+	assert '0.0'.f32().str() == '0.0'
+	assert '0.00'.f32().str() == '0.0'
+}
+
+fn test_f64_zero_chars() {
+	bits := math.f64_bits('-0.0'.f64())
+	assert math.f64_bits('-0 ms'.f64()) == bits
+	assert math.f64_bits('-0.0 ms'.f64()) == bits
+	assert math.f64_bits('-0.000 ms'.f64()) == bits
+	assert math.f64_bits('0 ms'.f64()) == 0
+	assert math.f64_bits('0.0 ms'.f64()) == 0
+	assert math.f64_bits('0.000 ms'.f64()) == 0
+	assert math.f64_bits('-0'.f64()) == bits
+	assert math.f64_bits('-0.0'.f64()) == bits
+	assert math.f64_bits('-0.000'.f64()) == bits
+	assert math.f64_bits('0'.f64()) == 0
+	assert math.f64_bits('0.0'.f64()) == 0
+	assert math.f64_bits('0.000'.f64()) == 0
+	assert '-0 ms'.f64().str() == '-0.0'
+	assert '-0.0 ms'.f64().str() == '-0.0'
+	assert '-0.000 ms'.f64().str() == '-0.0'
+	assert '0 ms'.f64().str() == '0.0'
+	assert '0.0 ms'.f64().str() == '0.0'
+	assert '0.000 ms'.f64().str() == '0.0'
+	assert '-0'.f64().str() == '-0.0'
+	assert '-0.0'.f64().str() == '-0.0'
+	assert '-0.000'.f64().str() == '-0.0'
+	assert '0'.f64().str() == '0.0'
+	assert '0.0'.f64().str() == '0.0'
+	assert '0.00'.f64().str() == '0.0'
+}