Commit be1603427531bab3b63b9fd2f01c0bb11bf1689a | zig

author	Andrew Kelley <andrew@ziglang.org> 2017-08-20 05:43:17-04:00
committer	Andrew Kelley <andrew@ziglang.org> 2017-08-20 05:43:40-04:00
log	be1603427531bab3b63b9fd2f01c0bb11bf1689a
tree	3c46def104adc5b9026f24cc98d2ce6a993ad4d1
parent	f248ef5f3f1c78d526e637f4ef08fa40c2ee15c3

std.math: remove constants that can be derived

from others at compile time

3 files changed, 26 insertions(+), 37 deletions(-)

std
- math

std/math/atan.zig+4-4

...	@@ -239,8 +239,8 @@ test "math.atan32.special" {	...	@@ -239,8 +239,8 @@ test "math.atan32.special" {
239		239
240	assert(atan32(0.0) == 0.0);	240	assert(atan32(0.0) == 0.0);
241	assert(atan32(-0.0) == -0.0);	241	assert(atan32(-0.0) == -0.0);
242	assert(math.approxEq(f32, atan32(math.inf(f32)), math.pi_2, epsilon));	242	assert(math.approxEq(f32, atan32(math.inf(f32)), math.pi / 2.0, epsilon));
243	assert(math.approxEq(f32, atan32(-math.inf(f32)), -math.pi_2, epsilon));	243	assert(math.approxEq(f32, atan32(-math.inf(f32)), -math.pi / 2.0, epsilon));
244	}	244	}
245		245
246	test "math.atan64.special" {	246	test "math.atan64.special" {
...	@@ -248,6 +248,6 @@ test "math.atan64.special" {	...	@@ -248,6 +248,6 @@ test "math.atan64.special" {
248		248
249	assert(atan64(0.0) == 0.0);	249	assert(atan64(0.0) == 0.0);
250	assert(atan64(-0.0) == -0.0);	250	assert(atan64(-0.0) == -0.0);
251	assert(math.approxEq(f64, atan64(math.inf(f64)), math.pi_2, epsilon));	251	assert(math.approxEq(f64, atan64(math.inf(f64)), math.pi / 2.0, epsilon));
252	assert(math.approxEq(f64, atan64(-math.inf(f64)), -math.pi_2, epsilon));	252	assert(math.approxEq(f64, atan64(-math.inf(f64)), -math.pi / 2.0, epsilon));
253	}	253	}

std/math/atan2.zig+20-20

std/math/index.zig+2-13

...	@@ -2,19 +2,8 @@ const builtin = @import("builtin");	...	@@ -2,19 +2,8 @@ const builtin = @import("builtin");
2	const TypeId = builtin.TypeId;	2	const TypeId = builtin.TypeId;
3	const assert = @import("../debug.zig").assert;	3	const assert = @import("../debug.zig").assert;
4		4
5	pub const e = 2.7182818284590452354; // e	5	pub const e = 2.71828182845904523536028747135266249775724709369995;
6	pub const log2_e = 1.4426950408889634074; // log_2(e)	6	pub const pi = 3.14159265358979323846264338327950288419716939937510;
7	pub const log10_e = 0.43429448190325182765; // log_10(e)
8	pub const ln_2 = 0.69314718055994530942; // log_e(2)
9	pub const ln_10 = 2.30258509299404568402; // log_e(10)
10	pub const pi = 3.14159265358979323846; // pi
11	pub const pi_2 = 1.57079632679489661923; // pi/2
12	pub const pi_4 = 0.78539816339744830962; // pi/4
13	pub const r1_pi = 0.31830988618379067154; // 1/pi
14	pub const r2_pi = 0.63661977236758134308; // 2/pi
15	pub const r2_sqrtpi = 1.12837916709551257390; // 2/sqrt(pi)
16	pub const sqrt2 = 1.41421356237309504880; // sqrt(2)
17	pub const r1_sqrt2 = 0.70710678118654752440; // 1/sqrt(2)
18		7
19	// float.h details	8	// float.h details
20	pub const f64_true_min = 4.94065645841246544177e-324;	9	pub const f64_true_min = 4.94065645841246544177e-324;

...	@@ -245,19 +245,19 @@ test "math.atan2_32.special" {	...	@@ -245,19 +245,19 @@ test "math.atan2_32.special" {
245	assert(atan2_32(-0.0, 5.0) == -0.0);	245	assert(atan2_32(-0.0, 5.0) == -0.0);
246	assert(math.approxEq(f32, atan2_32(0.0, -5.0), math.pi, epsilon));	246	assert(math.approxEq(f32, atan2_32(0.0, -5.0), math.pi, epsilon));
247	assert(math.approxEq(f32, atan2_32(-0.0, -5.0), -math.pi, epsilon));	247	assert(math.approxEq(f32, atan2_32(-0.0, -5.0), -math.pi, epsilon));
248	assert(math.approxEq(f32, atan2_32(1.0, 0.0), math.pi_2, epsilon));	248	assert(math.approxEq(f32, atan2_32(1.0, 0.0), math.pi / 2.0, epsilon));
249	assert(math.approxEq(f32, atan2_32(1.0, -0.0), math.pi_2, epsilon));	249	assert(math.approxEq(f32, atan2_32(1.0, -0.0), math.pi / 2.0, epsilon));
250	assert(math.approxEq(f32, atan2_32(-1.0, 0.0), -math.pi_2, epsilon));	250	assert(math.approxEq(f32, atan2_32(-1.0, 0.0), -math.pi / 2.0, epsilon));
251	assert(math.approxEq(f32, atan2_32(-1.0, -0.0), -math.pi_2, epsilon));	251	assert(math.approxEq(f32, atan2_32(-1.0, -0.0), -math.pi / 2.0, epsilon));
252	assert(math.approxEq(f32, atan2_32(math.inf(f32), math.inf(f32)), math.pi_4, epsilon));	252	assert(math.approxEq(f32, atan2_32(math.inf(f32), math.inf(f32)), math.pi / 4.0, epsilon));
253	assert(math.approxEq(f32, atan2_32(-math.inf(f32), math.inf(f32)), -math.pi_4, epsilon));	253	assert(math.approxEq(f32, atan2_32(-math.inf(f32), math.inf(f32)), -math.pi / 4.0, epsilon));
254	assert(math.approxEq(f32, atan2_32(math.inf(f32), -math.inf(f32)), 3.0 * math.pi_4, epsilon));	254	assert(math.approxEq(f32, atan2_32(math.inf(f32), -math.inf(f32)), 3.0 * math.pi / 4.0, epsilon));
255	assert(math.approxEq(f32, atan2_32(-math.inf(f32), -math.inf(f32)), -3.0 * math.pi_4, epsilon));	255	assert(math.approxEq(f32, atan2_32(-math.inf(f32), -math.inf(f32)), -3.0 * math.pi / 4.0, epsilon));
256	assert(atan2_32(1.0, math.inf(f32)) == 0.0);	256	assert(atan2_32(1.0, math.inf(f32)) == 0.0);
257	assert(math.approxEq(f32, atan2_32(1.0, -math.inf(f32)), math.pi, epsilon));	257	assert(math.approxEq(f32, atan2_32(1.0, -math.inf(f32)), math.pi, epsilon));
258	assert(math.approxEq(f32, atan2_32(-1.0, -math.inf(f32)), -math.pi, epsilon));	258	assert(math.approxEq(f32, atan2_32(-1.0, -math.inf(f32)), -math.pi, epsilon));
259	assert(math.approxEq(f32, atan2_32(math.inf(f32), 1.0), math.pi_2, epsilon));	259	assert(math.approxEq(f32, atan2_32(math.inf(f32), 1.0), math.pi / 2.0, epsilon));
260	assert(math.approxEq(f32, atan2_32(-math.inf(f32), 1.0), -math.pi_2, epsilon));	260	assert(math.approxEq(f32, atan2_32(-math.inf(f32), 1.0), -math.pi / 2.0, epsilon));
261	}	261	}
262		262
263	test "math.atan2_64.special" {	263	test "math.atan2_64.special" {
...	@@ -269,17 +269,17 @@ test "math.atan2_64.special" {	...	@@ -269,17 +269,17 @@ test "math.atan2_64.special" {
269	assert(atan2_64(-0.0, 5.0) == -0.0);	269	assert(atan2_64(-0.0, 5.0) == -0.0);
270	assert(math.approxEq(f64, atan2_64(0.0, -5.0), math.pi, epsilon));	270	assert(math.approxEq(f64, atan2_64(0.0, -5.0), math.pi, epsilon));
271	assert(math.approxEq(f64, atan2_64(-0.0, -5.0), -math.pi, epsilon));	271	assert(math.approxEq(f64, atan2_64(-0.0, -5.0), -math.pi, epsilon));
272	assert(math.approxEq(f64, atan2_64(1.0, 0.0), math.pi_2, epsilon));	272	assert(math.approxEq(f64, atan2_64(1.0, 0.0), math.pi / 2.0, epsilon));
273	assert(math.approxEq(f64, atan2_64(1.0, -0.0), math.pi_2, epsilon));	273	assert(math.approxEq(f64, atan2_64(1.0, -0.0), math.pi / 2.0, epsilon));
274	assert(math.approxEq(f64, atan2_64(-1.0, 0.0), -math.pi_2, epsilon));	274	assert(math.approxEq(f64, atan2_64(-1.0, 0.0), -math.pi / 2.0, epsilon));
275	assert(math.approxEq(f64, atan2_64(-1.0, -0.0), -math.pi_2, epsilon));	275	assert(math.approxEq(f64, atan2_64(-1.0, -0.0), -math.pi / 2.0, epsilon));
276	assert(math.approxEq(f64, atan2_64(math.inf(f64), math.inf(f64)), math.pi_4, epsilon));	276	assert(math.approxEq(f64, atan2_64(math.inf(f64), math.inf(f64)), math.pi / 4.0, epsilon));
277	assert(math.approxEq(f64, atan2_64(-math.inf(f64), math.inf(f64)), -math.pi_4, epsilon));	277	assert(math.approxEq(f64, atan2_64(-math.inf(f64), math.inf(f64)), -math.pi / 4.0, epsilon));
278	assert(math.approxEq(f64, atan2_64(math.inf(f64), -math.inf(f64)), 3.0 * math.pi_4, epsilon));	278	assert(math.approxEq(f64, atan2_64(math.inf(f64), -math.inf(f64)), 3.0 * math.pi / 4.0, epsilon));
279	assert(math.approxEq(f64, atan2_64(-math.inf(f64), -math.inf(f64)), -3.0 * math.pi_4, epsilon));	279	assert(math.approxEq(f64, atan2_64(-math.inf(f64), -math.inf(f64)), -3.0 * math.pi / 4.0, epsilon));
280	assert(atan2_64(1.0, math.inf(f64)) == 0.0);	280	assert(atan2_64(1.0, math.inf(f64)) == 0.0);
281	assert(math.approxEq(f64, atan2_64(1.0, -math.inf(f64)), math.pi, epsilon));	281	assert(math.approxEq(f64, atan2_64(1.0, -math.inf(f64)), math.pi, epsilon));
282	assert(math.approxEq(f64, atan2_64(-1.0, -math.inf(f64)), -math.pi, epsilon));	282	assert(math.approxEq(f64, atan2_64(-1.0, -math.inf(f64)), -math.pi, epsilon));
283	assert(math.approxEq(f64, atan2_64(math.inf(f64), 1.0), math.pi_2, epsilon));	283	assert(math.approxEq(f64, atan2_64(math.inf(f64), 1.0), math.pi / 2.0, epsilon));
284	assert(math.approxEq(f64, atan2_64(-math.inf(f64), 1.0), -math.pi_2, epsilon));	284	assert(math.approxEq(f64, atan2_64(-math.inf(f64), 1.0), -math.pi / 2.0, epsilon));
285	}	285	}