mirror of
https://codeberg.org/ziglang/zig.git
synced 2025-12-06 05:44:20 +00:00
f26dda2117
Most of this migration was performed automatically with `zig fmt`. There were a few exceptions which I had to manually fix: * `@alignCast` and `@addrSpaceCast` cannot be automatically rewritten * `@truncate`'s fixup is incorrect for vectors * Test cases are not formatted, and their error locations change
50 lines
2.2 KiB
Zig
50 lines
2.2 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 = @as(u128, @bitCast(result));
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const hi = @as(u64, @truncate(rep >> 64));
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const lo = @as(u64, @truncate(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(except inf and nan) = inf
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try test__divtf3(math.inf(f128), 0x1.23456789abcdefp+5, 0x7fff000000000000, 0);
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// inf / inf = nan
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try test__divtf3(math.inf(f128), math.inf(f128), 0x7fff800000000000, 0);
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// inf / nan = nan
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try test__divtf3(math.inf(f128), math.nan(f128), 0x7fff800000000000, 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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