Commit 14a324a0fa8d60dbf7d6948a992a09d8a65cbdc4 | zig

7 files changed, 27 insertions(+), 16 deletions(-)

std/math/exp.zig+8-1

...	...	@@ -31,6 +31,10 @@ fn exp32(x_: f32) -> f32 {
31	31	const sign = i32(hx >> 31);
32	32	hx &= 0x7FFFFFFF;
33	33
	34	if (math.isNan(x)) {
	35	return x;
	36	}
	37
34	38	// \|x\| >= -87.33655 or nan
35	39	if (hx >= 0x42AEAC50) {
36	40	// nan
...	...	@@ -108,6 +112,10 @@ fn exp64(x_: f64) -> f64 {
108	112	const sign = i32(hx >> 31);
109	113	hx &= 0x7FFFFFFF;
110	114
	115	if (math.isNan(x)) {
	116	return x;
	117	}
	118
111	119	// \|x\| >= 708.39 or nan
112	120	if (hx >= 0x4086232B) {
113	121	// nan
...	...	@@ -204,7 +212,6 @@ test "math.exp32.special" {
204	212	}
205	213
206	214	test "math.exp64.special" {
207		// TODO: Error on release (like pow)
208	215	assert(math.isPositiveInf(exp64(math.inf(f64))));
209	216	assert(math.isNan(exp64(math.nan(f64))));
210	217	}

std/math/expm1.zig+1-1

std/math/frexp.zig+1-2

...	...	@@ -77,8 +77,8 @@ fn frexp64(x: f64) -> frexp64_result {
77	77	}
78	78	return result;
79	79	} else if (e == 0x7FF) {
80		// frexp(nan) = (nan, 0)
81	80	result.significand = x;
	81	result.exponent = 0;
82	82	return result;
83	83	}
84	84
...	...	@@ -141,7 +141,6 @@ test "math.frexp32.special" {
141	141	}
142	142
143	143	test "math.frexp64.special" {
144		// TODO: Error on release mode (like pow)
145	144	var r: frexp64_result = undefined;
146	145
147	146	r = frexp64(0.0);

std/math/pow.zig-1

...	...	@@ -179,7 +179,6 @@ fn isOddInteger(x: f64) -> bool {
179	179	test "math.pow" {
180	180	const epsilon = 0.000001;
181	181
182		// TODO: Error on release
183	182	assert(math.approxEq(f32, pow(f32, 0.0, 3.3), 0.0, epsilon));
184	183	assert(math.approxEq(f32, pow(f32, 0.8923, 3.3), 0.686572, epsilon));
185	184	assert(math.approxEq(f32, pow(f32, 0.2, 3.3), 0.004936, epsilon));

std/math/scalbn.zig+2-3

...	...	@@ -48,11 +48,10 @@ fn scalbn64(x: f64, n_: i32) -> f64 {
48	48	var n = n_;
49	49
50	50	if (n > 1023) {
51		// TODO: Determine how to do the following.
52		// y *= 0x1.0p1023;
	51	y = 0x1.0p1022 10.0;
53	52	n -= 1023;
54	53	if (n > 1023) {
55		// y *= 0x1.0p1023;
	54	y = 0x1.0p1022 10.0;
56	55	n -= 1023;
57	56	if (n > 1023) {
58	57	n = 1023;

std/math/sinh.zig+8-1

...	...	@@ -28,6 +28,10 @@ fn sinh32(x: f32) -> f32 {
28	28	const ux = u & 0x7FFFFFFF;
29	29	const ax = @bitCast(f32, ux);
30	30
	31	if (x == 0.0 or math.isNan(x)) {
	32	return x;
	33	}
	34
31	35	var h: f32 = 0.5;
32	36	if (u >> 31 != 0) {
33	37	h = -h;
...	...	@@ -57,6 +61,10 @@ fn sinh64(x: f64) -> f64 {
57	61	const w = u32(u >> 32);
58	62	const ax = @bitCast(f64, u & (@maxValue(u64) >> 1));
59	63
	64	if (x == 0.0 or math.isNan(x)) {
	65	return x;
	66	}
	67
60	68	var h: f32 = 0.5;
61	69	if (u >> 63 != 0) {
62	70	h = -h;
...	...	@@ -112,7 +120,6 @@ test "math.sinh32.special" {
112	120	}
113	121
114	122	test "math.sinh64.special" {
115		// TODO: Error on release mode (like pow)
116	123	assert(sinh64(0.0) == 0.0);
117	124	assert(sinh64(-0.0) == -0.0);
118	125	assert(math.isPositiveInf(sinh64(math.inf(f64))));

std/math/tanh.zig+7-7

...	...	@@ -30,11 +30,15 @@ fn tanh32(x: f32) -> f32 {
30	30
31	31	var t: f32 = undefined;
32	32
	33	if (x == 0.0 or math.isNan(x)) {
	34	return x;
	35	}
	36
33	37	// \|x\| < log(3) / 2 ~= 0.5493 or nan
34	38	if (ux > 0x3F0C9F54) {
35	39	// \|x\| > 10
36	40	if (ux > 0x41200000) {
37		t = 1.0 + 0 / x;
	41	t = 1.0;
38	42	} else {
39	43	t = math.expm1(2 * x);
40	44	t = 1 - 2 / (t + 2);
...	...	@@ -71,10 +75,7 @@ fn tanh64(x: f64) -> f64 {
71	75	var t: f64 = undefined;
72	76
73	77	// TODO: Shouldn't need these checks.
74		if (x == 0.0) {
75		return x;
76		}
77		if (math.isNan(x)) {
	78	if (x == 0.0 or math.isNan(x)) {
78	79	return x;
79	80	}
80	81
...	...	@@ -82,7 +83,7 @@ fn tanh64(x: f64) -> f64 {
82	83	if (w > 0x3FE193EA) {
83	84	// \|x\| > 20 or nan
84	85	if (w > 0x40340000) {
85		t = 1.0; // TODO + 0 / x;
	86	t = 1.0;
86	87	} else {
87	88	t = math.expm1(2 * x);
88	89	t = 1 - 2 / (t + 2);
...	...	@@ -137,7 +138,6 @@ test "math.tanh64" {
137	138	}
138	139
139	140	test "math.tanh32.special" {
140		// TODO: Error on release (like pow)
141	141	assert(tanh32(0.0) == 0.0);
142	142	assert(tanh32(-0.0) == -0.0);
143	143	assert(tanh32(math.inf(f32)) == 1.0);