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https://codeberg.org/ziglang/zig.git
synced 2025-12-07 14:24:43 +00:00
d29871977f
We already have a LICENSE file that covers the Zig Standard Library. We no longer need to remind everyone that the license is MIT in every single file. Previously this was introduced to clarify the situation for a fork of Zig that made Zig's LICENSE file harder to find, and replaced it with their own license that required annual payments to their company. However that fork now appears to be dead. So there is no need to reinforce the copyright notice in every single file.
46 lines
2 KiB
Zig
46 lines
2 KiB
Zig
const std = @import("std");
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const math = std.math;
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const testing = std.testing;
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const __divtf3 = @import("divtf3.zig").__divtf3;
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fn compareResultLD(result: f128, expectedHi: u64, expectedLo: u64) bool {
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const rep = @bitCast(u128, result);
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const hi = @truncate(u64, rep >> 64);
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const lo = @truncate(u64, rep);
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if (hi == expectedHi and lo == expectedLo) {
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return true;
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}
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// test other possible NaN representation(signal NaN)
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else if (expectedHi == 0x7fff800000000000 and expectedLo == 0) {
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if ((hi & 0x7fff000000000000) == 0x7fff000000000000 and
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((hi & 0xffffffffffff) > 0 or lo > 0))
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{
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return true;
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}
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}
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return false;
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}
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fn test__divtf3(a: f128, b: f128, expectedHi: u64, expectedLo: u64) !void {
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const x = __divtf3(a, b);
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const ret = compareResultLD(x, expectedHi, expectedLo);
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try testing.expect(ret == true);
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}
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test "divtf3" {
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// qNaN / any = qNaN
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try test__divtf3(math.qnan_f128, 0x1.23456789abcdefp+5, 0x7fff800000000000, 0);
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// NaN / any = NaN
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try test__divtf3(math.nan_f128, 0x1.23456789abcdefp+5, 0x7fff800000000000, 0);
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// inf / any = inf
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try test__divtf3(math.inf_f128, 0x1.23456789abcdefp+5, 0x7fff000000000000, 0);
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try test__divtf3(0x1.a23b45362464523375893ab4cdefp+5, 0x1.eedcbaba3a94546558237654321fp-1, 0x4004b0b72924d407, 0x0717e84356c6eba2);
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try test__divtf3(0x1.a2b34c56d745382f9abf2c3dfeffp-50, 0x1.ed2c3ba15935332532287654321fp-9, 0x3fd5b2af3f828c9b, 0x40e51f64cde8b1f2);
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try test__divtf3(0x1.2345f6aaaa786555f42432abcdefp+456, 0x1.edacbba9874f765463544dd3621fp+6400, 0x28c62e15dc464466, 0xb5a07586348557ac);
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try test__divtf3(0x1.2d3456f789ba6322bc665544edefp-234, 0x1.eddcdba39f3c8b7a36564354321fp-4455, 0x507b38442b539266, 0x22ce0f1d024e1252);
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try test__divtf3(0x1.2345f6b77b7a8953365433abcdefp+234, 0x1.edcba987d6bb3aa467754354321fp-4055, 0x50bf2e02f0798d36, 0x5e6fcb6b60044078);
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try test__divtf3(6.72420628622418701252535563464350521E-4932, 2.0, 0x0001000000000000, 0);
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}
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