ec95e00e28
stage2: change logic for detecting whether the main package is inside
the std package. Previously it relied on realpath() which is not portable.
This uses resolve() which is how imports already work.
* stage2: fix cleanup bug when creating Module
* flatten lib/std/special/* to lib/*
- this was motivated by making main_pkg_is_inside_std false for
compiler_rt & friends.
* rename "mini libc" to "universal libc"
51 lines
2.2 KiB
Zig
51 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 = @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(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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