mirror of
https://github.com/ziglang/zig.git
synced 2025-12-28 00:53:18 +00:00
4307436b99
And fix test cases to make them pass. This is in preparation for starting to pass behavior tests with self-hosted.
466 lines
13 KiB
Zig
466 lines
13 KiB
Zig
const std = @import("std");
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const expect = std.testing.expect;
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const math = std.math;
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const pi = std.math.pi;
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const e = std.math.e;
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const Vector = std.meta.Vector;
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const epsilon = 0.000001;
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test "@sqrt" {
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comptime testSqrt();
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testSqrt();
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}
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fn testSqrt() void {
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{
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var a: f16 = 4;
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expect(@sqrt(a) == 2);
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}
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{
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var a: f32 = 9;
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expect(@sqrt(a) == 3);
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var b: f32 = 1.1;
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expect(math.approxEqAbs(f32, @sqrt(b), 1.0488088481701516, epsilon));
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}
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{
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var a: f64 = 25;
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expect(@sqrt(a) == 5);
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}
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{
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const a: comptime_float = 25.0;
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expect(@sqrt(a) == 5.0);
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}
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// TODO https://github.com/ziglang/zig/issues/4026
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//{
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// var a: f128 = 49;
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// expect(@sqrt(a) == 7);
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//}
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{
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var v: Vector(4, f32) = [_]f32{ 1.1, 2.2, 3.3, 4.4 };
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var result = @sqrt(v);
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expect(math.approxEqAbs(f32, @sqrt(@as(f32, 1.1)), result[0], epsilon));
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expect(math.approxEqAbs(f32, @sqrt(@as(f32, 2.2)), result[1], epsilon));
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expect(math.approxEqAbs(f32, @sqrt(@as(f32, 3.3)), result[2], epsilon));
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expect(math.approxEqAbs(f32, @sqrt(@as(f32, 4.4)), result[3], epsilon));
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}
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}
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test "more @sqrt f16 tests" {
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// TODO these are not all passing at comptime
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expect(@sqrt(@as(f16, 0.0)) == 0.0);
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expect(math.approxEqAbs(f16, @sqrt(@as(f16, 2.0)), 1.414214, epsilon));
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expect(math.approxEqAbs(f16, @sqrt(@as(f16, 3.6)), 1.897367, epsilon));
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expect(@sqrt(@as(f16, 4.0)) == 2.0);
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expect(math.approxEqAbs(f16, @sqrt(@as(f16, 7.539840)), 2.745877, epsilon));
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expect(math.approxEqAbs(f16, @sqrt(@as(f16, 19.230934)), 4.385309, epsilon));
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expect(@sqrt(@as(f16, 64.0)) == 8.0);
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expect(math.approxEqAbs(f16, @sqrt(@as(f16, 64.1)), 8.006248, epsilon));
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expect(math.approxEqAbs(f16, @sqrt(@as(f16, 8942.230469)), 94.563370, epsilon));
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// special cases
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expect(math.isPositiveInf(@sqrt(@as(f16, math.inf(f16)))));
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expect(@sqrt(@as(f16, 0.0)) == 0.0);
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expect(@sqrt(@as(f16, -0.0)) == -0.0);
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expect(math.isNan(@sqrt(@as(f16, -1.0))));
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expect(math.isNan(@sqrt(@as(f16, math.nan(f16)))));
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}
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test "@sin" {
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comptime testSin();
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testSin();
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}
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fn testSin() void {
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// TODO test f128, and c_longdouble
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// https://github.com/ziglang/zig/issues/4026
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{
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var a: f16 = 0;
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expect(@sin(a) == 0);
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}
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{
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var a: f32 = 0;
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expect(@sin(a) == 0);
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}
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{
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var a: f64 = 0;
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expect(@sin(a) == 0);
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}
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{
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var v: Vector(4, f32) = [_]f32{ 1.1, 2.2, 3.3, 4.4 };
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var result = @sin(v);
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expect(math.approxEqAbs(f32, @sin(@as(f32, 1.1)), result[0], epsilon));
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expect(math.approxEqAbs(f32, @sin(@as(f32, 2.2)), result[1], epsilon));
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expect(math.approxEqAbs(f32, @sin(@as(f32, 3.3)), result[2], epsilon));
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expect(math.approxEqAbs(f32, @sin(@as(f32, 4.4)), result[3], epsilon));
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}
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}
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test "@cos" {
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comptime testCos();
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testCos();
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}
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fn testCos() void {
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// TODO test f128, and c_longdouble
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// https://github.com/ziglang/zig/issues/4026
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{
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var a: f16 = 0;
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expect(@cos(a) == 1);
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}
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{
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var a: f32 = 0;
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expect(@cos(a) == 1);
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}
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{
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var a: f64 = 0;
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expect(@cos(a) == 1);
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}
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{
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var v: Vector(4, f32) = [_]f32{ 1.1, 2.2, 3.3, 4.4 };
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var result = @cos(v);
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expect(math.approxEqAbs(f32, @cos(@as(f32, 1.1)), result[0], epsilon));
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expect(math.approxEqAbs(f32, @cos(@as(f32, 2.2)), result[1], epsilon));
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expect(math.approxEqAbs(f32, @cos(@as(f32, 3.3)), result[2], epsilon));
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expect(math.approxEqAbs(f32, @cos(@as(f32, 4.4)), result[3], epsilon));
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}
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}
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test "@exp" {
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comptime testExp();
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testExp();
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}
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fn testExp() void {
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// TODO test f128, and c_longdouble
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// https://github.com/ziglang/zig/issues/4026
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{
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var a: f16 = 0;
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expect(@exp(a) == 1);
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}
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{
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var a: f32 = 0;
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expect(@exp(a) == 1);
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}
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{
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var a: f64 = 0;
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expect(@exp(a) == 1);
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}
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{
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var v: Vector(4, f32) = [_]f32{ 1.1, 2.2, 0.3, 0.4 };
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var result = @exp(v);
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expect(math.approxEqAbs(f32, @exp(@as(f32, 1.1)), result[0], epsilon));
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expect(math.approxEqAbs(f32, @exp(@as(f32, 2.2)), result[1], epsilon));
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expect(math.approxEqAbs(f32, @exp(@as(f32, 0.3)), result[2], epsilon));
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expect(math.approxEqAbs(f32, @exp(@as(f32, 0.4)), result[3], epsilon));
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}
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}
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test "@exp2" {
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comptime testExp2();
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testExp2();
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}
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fn testExp2() void {
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// TODO test f128, and c_longdouble
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// https://github.com/ziglang/zig/issues/4026
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{
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var a: f16 = 2;
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expect(@exp2(a) == 4);
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}
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{
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var a: f32 = 2;
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expect(@exp2(a) == 4);
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}
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{
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var a: f64 = 2;
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expect(@exp2(a) == 4);
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}
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{
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var v: Vector(4, f32) = [_]f32{ 1.1, 2.2, 0.3, 0.4 };
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var result = @exp2(v);
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expect(math.approxEqAbs(f32, @exp2(@as(f32, 1.1)), result[0], epsilon));
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expect(math.approxEqAbs(f32, @exp2(@as(f32, 2.2)), result[1], epsilon));
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expect(math.approxEqAbs(f32, @exp2(@as(f32, 0.3)), result[2], epsilon));
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expect(math.approxEqAbs(f32, @exp2(@as(f32, 0.4)), result[3], epsilon));
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}
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}
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test "@log" {
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// Old musl (and glibc?), and our current math.ln implementation do not return 1
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// so also accept those values.
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comptime testLog();
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testLog();
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}
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fn testLog() void {
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// TODO test f128, and c_longdouble
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// https://github.com/ziglang/zig/issues/4026
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{
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var a: f16 = e;
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expect(math.approxEqAbs(f16, @log(a), 1, epsilon));
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}
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{
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var a: f32 = e;
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expect(@log(a) == 1 or @log(a) == @bitCast(f32, @as(u32, 0x3f7fffff)));
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}
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{
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var a: f64 = e;
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expect(@log(a) == 1 or @log(a) == @bitCast(f64, @as(u64, 0x3ff0000000000000)));
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}
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{
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var v: Vector(4, f32) = [_]f32{ 1.1, 2.2, 0.3, 0.4 };
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var result = @log(v);
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expect(math.approxEqAbs(f32, @log(@as(f32, 1.1)), result[0], epsilon));
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expect(math.approxEqAbs(f32, @log(@as(f32, 2.2)), result[1], epsilon));
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expect(math.approxEqAbs(f32, @log(@as(f32, 0.3)), result[2], epsilon));
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expect(math.approxEqAbs(f32, @log(@as(f32, 0.4)), result[3], epsilon));
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}
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}
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test "@log2" {
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comptime testLog2();
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testLog2();
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}
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fn testLog2() void {
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// TODO test f128, and c_longdouble
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// https://github.com/ziglang/zig/issues/4026
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{
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var a: f16 = 4;
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expect(@log2(a) == 2);
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}
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{
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var a: f32 = 4;
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expect(@log2(a) == 2);
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}
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{
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var a: f64 = 4;
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expect(@log2(a) == 2);
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}
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{
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var v: Vector(4, f32) = [_]f32{ 1.1, 2.2, 0.3, 0.4 };
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var result = @log2(v);
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expect(math.approxEqAbs(f32, @log2(@as(f32, 1.1)), result[0], epsilon));
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expect(math.approxEqAbs(f32, @log2(@as(f32, 2.2)), result[1], epsilon));
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expect(math.approxEqAbs(f32, @log2(@as(f32, 0.3)), result[2], epsilon));
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expect(math.approxEqAbs(f32, @log2(@as(f32, 0.4)), result[3], epsilon));
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}
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}
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test "@log10" {
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comptime testLog10();
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testLog10();
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}
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fn testLog10() void {
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// TODO test f128, and c_longdouble
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// https://github.com/ziglang/zig/issues/4026
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{
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var a: f16 = 100;
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expect(@log10(a) == 2);
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}
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{
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var a: f32 = 100;
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expect(@log10(a) == 2);
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}
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{
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var a: f64 = 1000;
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expect(@log10(a) == 3);
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}
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{
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var v: Vector(4, f32) = [_]f32{ 1.1, 2.2, 0.3, 0.4 };
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var result = @log10(v);
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expect(math.approxEqAbs(f32, @log10(@as(f32, 1.1)), result[0], epsilon));
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expect(math.approxEqAbs(f32, @log10(@as(f32, 2.2)), result[1], epsilon));
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expect(math.approxEqAbs(f32, @log10(@as(f32, 0.3)), result[2], epsilon));
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expect(math.approxEqAbs(f32, @log10(@as(f32, 0.4)), result[3], epsilon));
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}
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}
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test "@fabs" {
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comptime testFabs();
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testFabs();
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}
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fn testFabs() void {
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// TODO test f128, and c_longdouble
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// https://github.com/ziglang/zig/issues/4026
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{
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var a: f16 = -2.5;
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var b: f16 = 2.5;
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expect(@fabs(a) == 2.5);
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expect(@fabs(b) == 2.5);
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}
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{
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var a: f32 = -2.5;
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var b: f32 = 2.5;
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expect(@fabs(a) == 2.5);
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expect(@fabs(b) == 2.5);
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}
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{
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var a: f64 = -2.5;
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var b: f64 = 2.5;
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expect(@fabs(a) == 2.5);
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expect(@fabs(b) == 2.5);
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}
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{
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var v: Vector(4, f32) = [_]f32{ 1.1, -2.2, 0.3, -0.4 };
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var result = @fabs(v);
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expect(math.approxEqAbs(f32, @fabs(@as(f32, 1.1)), result[0], epsilon));
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expect(math.approxEqAbs(f32, @fabs(@as(f32, -2.2)), result[1], epsilon));
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expect(math.approxEqAbs(f32, @fabs(@as(f32, 0.3)), result[2], epsilon));
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expect(math.approxEqAbs(f32, @fabs(@as(f32, -0.4)), result[3], epsilon));
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}
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}
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test "@floor" {
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comptime testFloor();
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testFloor();
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}
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fn testFloor() void {
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// TODO test f128, and c_longdouble
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// https://github.com/ziglang/zig/issues/4026
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{
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var a: f16 = 2.1;
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expect(@floor(a) == 2);
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}
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{
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var a: f32 = 2.1;
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expect(@floor(a) == 2);
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}
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{
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var a: f64 = 3.5;
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expect(@floor(a) == 3);
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}
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{
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var v: Vector(4, f32) = [_]f32{ 1.1, -2.2, 0.3, -0.4 };
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var result = @floor(v);
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expect(math.approxEqAbs(f32, @floor(@as(f32, 1.1)), result[0], epsilon));
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expect(math.approxEqAbs(f32, @floor(@as(f32, -2.2)), result[1], epsilon));
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expect(math.approxEqAbs(f32, @floor(@as(f32, 0.3)), result[2], epsilon));
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expect(math.approxEqAbs(f32, @floor(@as(f32, -0.4)), result[3], epsilon));
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}
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}
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test "@ceil" {
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comptime testCeil();
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testCeil();
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}
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fn testCeil() void {
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// TODO test f128, and c_longdouble
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// https://github.com/ziglang/zig/issues/4026
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{
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var a: f16 = 2.1;
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expect(@ceil(a) == 3);
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}
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{
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var a: f32 = 2.1;
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expect(@ceil(a) == 3);
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}
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{
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var a: f64 = 3.5;
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expect(@ceil(a) == 4);
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}
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{
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var v: Vector(4, f32) = [_]f32{ 1.1, -2.2, 0.3, -0.4 };
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var result = @ceil(v);
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expect(math.approxEqAbs(f32, @ceil(@as(f32, 1.1)), result[0], epsilon));
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expect(math.approxEqAbs(f32, @ceil(@as(f32, -2.2)), result[1], epsilon));
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expect(math.approxEqAbs(f32, @ceil(@as(f32, 0.3)), result[2], epsilon));
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expect(math.approxEqAbs(f32, @ceil(@as(f32, -0.4)), result[3], epsilon));
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}
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}
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test "@trunc" {
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comptime testTrunc();
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testTrunc();
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}
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fn testTrunc() void {
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// TODO test f128, and c_longdouble
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// https://github.com/ziglang/zig/issues/4026
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{
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var a: f16 = 2.1;
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expect(@trunc(a) == 2);
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}
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{
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var a: f32 = 2.1;
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expect(@trunc(a) == 2);
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}
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{
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var a: f64 = -3.5;
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expect(@trunc(a) == -3);
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}
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{
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var v: Vector(4, f32) = [_]f32{ 1.1, -2.2, 0.3, -0.4 };
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var result = @trunc(v);
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expect(math.approxEqAbs(f32, @trunc(@as(f32, 1.1)), result[0], epsilon));
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expect(math.approxEqAbs(f32, @trunc(@as(f32, -2.2)), result[1], epsilon));
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expect(math.approxEqAbs(f32, @trunc(@as(f32, 0.3)), result[2], epsilon));
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expect(math.approxEqAbs(f32, @trunc(@as(f32, -0.4)), result[3], epsilon));
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}
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}
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test "floating point comparisons" {
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testFloatComparisons();
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comptime testFloatComparisons();
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}
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fn testFloatComparisons() void {
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inline for ([_]type{ f16, f32, f64, f128 }) |ty| {
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// No decimal part
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{
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const x: ty = 1.0;
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expect(x == 1);
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expect(x != 0);
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expect(x > 0);
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expect(x < 2);
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expect(x >= 1);
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expect(x <= 1);
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}
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// Non-zero decimal part
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{
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const x: ty = 1.5;
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expect(x != 1);
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expect(x != 2);
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expect(x > 1);
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expect(x < 2);
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expect(x >= 1);
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expect(x <= 2);
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}
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}
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}
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test "different sized float comparisons" {
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testDifferentSizedFloatComparisons();
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comptime testDifferentSizedFloatComparisons();
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}
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fn testDifferentSizedFloatComparisons() void {
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var a: f16 = 1;
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var b: f64 = 2;
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expect(a < b);
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}
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// TODO This is waiting on library support for the Windows build (not sure why the other's don't need it)
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//test "@nearbyint" {
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// comptime testNearbyInt();
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// testNearbyInt();
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//}
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//fn testNearbyInt() void {
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// // TODO test f16, f128, and c_longdouble
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// // https://github.com/ziglang/zig/issues/4026
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// {
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// var a: f32 = 2.1;
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// expect(@nearbyint(a) == 2);
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// }
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// {
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// var a: f64 = -3.75;
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// expect(@nearbyint(a) == -4);
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// }
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//}
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