mirror of
https://codeberg.org/ziglang/zig.git
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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"
261 lines
9.5 KiB
Zig
261 lines
9.5 KiB
Zig
const std = @import("std");
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const neg = @import("negXi2.zig");
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const testing = std.testing;
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const print = std.debug.print;
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fn test__negsi2(a: i32, expected: i32) !void {
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var result = neg.__negsi2(a);
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try testing.expectEqual(expected, result);
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}
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test "negsi2" {
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// TODO ensuring that math.minInt(i32); returns error
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try test__negsi2(-3, 3);
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try test__negsi2(-2, 2);
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try test__negsi2(-1, 1);
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try test__negsi2(0, 0); // special case for 2s complement
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try test__negsi2(1, -1);
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try test__negsi2(2, -2);
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try test__negsi2(3, -3);
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// max_usable == MAX(i32) == -MIN(i32) == 2147483647 == 7fffffff
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// divTrunc: max_usable / i, i=1,2,3,5,100
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// 7fffffff / i
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try test__negsi2(-715827882, 715827882);
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try test__negsi2(715827882, -715827882);
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try test__negsi2(-429496729, 429496729);
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try test__negsi2(429496729, -429496729);
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try test__negsi2(-214748364, 214748364);
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try test__negsi2(214748364, -214748364);
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// shifting: max_usable >> i, i=0..bitsize-4
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// 7fffffff >> i
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// 7fffffff >> i + 1
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// 7fffffff >> i + 3
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// 7fffffff >> i + 7
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try test__negsi2(-2147483647, 2147483647);
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try test__negsi2(2147483647, -2147483647);
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try test__negsi2(-2147483646, 2147483646);
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try test__negsi2(2147483646, -2147483646);
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try test__negsi2(-2147483644, 2147483644);
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try test__negsi2(2147483644, -2147483644);
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try test__negsi2(-2147483640, 2147483640);
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try test__negsi2(2147483640, -2147483640);
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try test__negsi2(-1073741823, 1073741823);
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try test__negsi2(1073741823, -1073741823);
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try test__negsi2(-1073741822, 1073741822);
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try test__negsi2(1073741822, -1073741822);
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try test__negsi2(-1073741820, 1073741820);
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try test__negsi2(1073741820, -1073741820);
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try test__negsi2(-1073741816, 1073741816);
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try test__negsi2(1073741816, -1073741816);
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try test__negsi2(-536870911, 536870911);
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try test__negsi2(536870911, -536870911);
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try test__negsi2(-536870910, 536870910);
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try test__negsi2(536870910, -536870910);
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try test__negsi2(-536870908, 536870908);
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try test__negsi2(536870908, -536870908);
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try test__negsi2(-536870904, 536870904);
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try test__negsi2(536870904, -536870904);
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try test__negsi2(-268435455, 268435455);
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try test__negsi2(268435455, -268435455);
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try test__negsi2(-268435454, 268435454);
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try test__negsi2(268435454, -268435454);
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try test__negsi2(-268435452, 268435452);
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try test__negsi2(268435452, -268435452);
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try test__negsi2(-268435448, 268435448);
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try test__negsi2(268435448, -268435448);
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try test__negsi2(-134217727, 134217727);
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try test__negsi2(134217727, -134217727);
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try test__negsi2(-134217726, 134217726);
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try test__negsi2(134217726, -134217726);
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try test__negsi2(-134217724, 134217724);
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try test__negsi2(134217724, -134217724);
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try test__negsi2(-134217720, 134217720);
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try test__negsi2(134217720, -134217720);
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try test__negsi2(-67108863, 67108863);
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try test__negsi2(67108863, -67108863);
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try test__negsi2(-67108862, 67108862);
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try test__negsi2(67108862, -67108862);
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try test__negsi2(-67108860, 67108860);
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try test__negsi2(67108860, -67108860);
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try test__negsi2(-67108856, 67108856);
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try test__negsi2(67108856, -67108856);
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try test__negsi2(-33554431, 33554431);
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try test__negsi2(33554431, -33554431);
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try test__negsi2(-33554430, 33554430);
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try test__negsi2(33554430, -33554430);
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try test__negsi2(-33554428, 33554428);
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try test__negsi2(33554428, -33554428);
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try test__negsi2(-33554424, 33554424);
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try test__negsi2(33554424, -33554424);
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try test__negsi2(-16777215, 16777215);
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try test__negsi2(16777215, -16777215);
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try test__negsi2(-16777214, 16777214);
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try test__negsi2(16777214, -16777214);
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try test__negsi2(-16777212, 16777212);
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try test__negsi2(16777212, -16777212);
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try test__negsi2(-16777208, 16777208);
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try test__negsi2(16777208, -16777208);
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try test__negsi2(-8388607, 8388607);
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try test__negsi2(8388607, -8388607);
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try test__negsi2(-8388606, 8388606);
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try test__negsi2(8388606, -8388606);
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try test__negsi2(-8388604, 8388604);
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try test__negsi2(8388604, -8388604);
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try test__negsi2(-8388600, 8388600);
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try test__negsi2(8388600, -8388600);
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try test__negsi2(-4194303, 4194303);
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try test__negsi2(4194303, -4194303);
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try test__negsi2(-4194302, 4194302);
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try test__negsi2(4194302, -4194302);
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try test__negsi2(-4194300, 4194300);
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try test__negsi2(4194300, -4194300);
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try test__negsi2(-4194296, 4194296);
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try test__negsi2(4194296, -4194296);
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try test__negsi2(-2097151, 2097151);
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try test__negsi2(2097151, -2097151);
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try test__negsi2(-2097150, 2097150);
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try test__negsi2(2097150, -2097150);
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try test__negsi2(-2097148, 2097148);
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try test__negsi2(2097148, -2097148);
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try test__negsi2(-2097144, 2097144);
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try test__negsi2(2097144, -2097144);
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try test__negsi2(-1048575, 1048575);
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try test__negsi2(1048575, -1048575);
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try test__negsi2(-1048574, 1048574);
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try test__negsi2(1048574, -1048574);
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try test__negsi2(-1048572, 1048572);
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try test__negsi2(1048572, -1048572);
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try test__negsi2(-1048568, 1048568);
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try test__negsi2(1048568, -1048568);
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try test__negsi2(-524287, 524287);
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try test__negsi2(524287, -524287);
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try test__negsi2(-524286, 524286);
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try test__negsi2(524286, -524286);
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try test__negsi2(-524284, 524284);
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try test__negsi2(524284, -524284);
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try test__negsi2(-524280, 524280);
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try test__negsi2(524280, -524280);
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try test__negsi2(-262143, 262143);
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try test__negsi2(262143, -262143);
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try test__negsi2(-262142, 262142);
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try test__negsi2(262142, -262142);
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try test__negsi2(-262140, 262140);
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try test__negsi2(262140, -262140);
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try test__negsi2(-262136, 262136);
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try test__negsi2(262136, -262136);
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try test__negsi2(-131071, 131071);
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try test__negsi2(131071, -131071);
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try test__negsi2(-131070, 131070);
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try test__negsi2(131070, -131070);
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try test__negsi2(-131068, 131068);
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try test__negsi2(131068, -131068);
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try test__negsi2(-131064, 131064);
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try test__negsi2(131064, -131064);
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try test__negsi2(-65535, 65535);
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try test__negsi2(65535, -65535);
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try test__negsi2(-65534, 65534);
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try test__negsi2(65534, -65534);
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try test__negsi2(-65532, 65532);
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try test__negsi2(65532, -65532);
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try test__negsi2(-65528, 65528);
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try test__negsi2(65528, -65528);
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try test__negsi2(-32767, 32767);
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try test__negsi2(32767, -32767);
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try test__negsi2(-32766, 32766);
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try test__negsi2(32766, -32766);
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try test__negsi2(-32764, 32764);
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try test__negsi2(32764, -32764);
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try test__negsi2(-32760, 32760);
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try test__negsi2(32760, -32760);
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try test__negsi2(-16383, 16383);
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try test__negsi2(16383, -16383);
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try test__negsi2(-16382, 16382);
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try test__negsi2(16382, -16382);
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try test__negsi2(-16380, 16380);
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try test__negsi2(16380, -16380);
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try test__negsi2(-16376, 16376);
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try test__negsi2(16376, -16376);
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try test__negsi2(-8191, 8191);
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try test__negsi2(8191, -8191);
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try test__negsi2(-8190, 8190);
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try test__negsi2(8190, -8190);
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try test__negsi2(-8188, 8188);
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try test__negsi2(8188, -8188);
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try test__negsi2(-8184, 8184);
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try test__negsi2(8184, -8184);
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try test__negsi2(-4095, 4095);
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try test__negsi2(4095, -4095);
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try test__negsi2(-4094, 4094);
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try test__negsi2(4094, -4094);
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try test__negsi2(-4092, 4092);
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try test__negsi2(4092, -4092);
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try test__negsi2(-4088, 4088);
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try test__negsi2(4088, -4088);
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try test__negsi2(-2047, 2047);
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try test__negsi2(2047, -2047);
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try test__negsi2(-2046, 2046);
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try test__negsi2(2046, -2046);
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try test__negsi2(-2044, 2044);
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try test__negsi2(2044, -2044);
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try test__negsi2(-2040, 2040);
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try test__negsi2(2040, -2040);
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try test__negsi2(-1023, 1023);
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try test__negsi2(1023, -1023);
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try test__negsi2(-1022, 1022);
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try test__negsi2(1022, -1022);
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try test__negsi2(-1020, 1020);
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try test__negsi2(1020, -1020);
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try test__negsi2(-1016, 1016);
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try test__negsi2(1016, -1016);
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try test__negsi2(-511, 511);
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try test__negsi2(511, -511);
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try test__negsi2(-510, 510);
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try test__negsi2(510, -510);
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try test__negsi2(-508, 508);
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try test__negsi2(508, -508);
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try test__negsi2(-504, 504);
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try test__negsi2(504, -504);
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try test__negsi2(-255, 255);
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try test__negsi2(255, -255);
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try test__negsi2(-254, 254);
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try test__negsi2(254, -254);
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try test__negsi2(-252, 252);
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try test__negsi2(252, -252);
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try test__negsi2(-248, 248);
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try test__negsi2(248, -248);
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try test__negsi2(-127, 127);
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try test__negsi2(127, -127);
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try test__negsi2(-126, 126);
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try test__negsi2(126, -126);
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try test__negsi2(-124, 124);
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try test__negsi2(124, -124);
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try test__negsi2(-120, 120);
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try test__negsi2(120, -120);
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try test__negsi2(-63, 63);
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try test__negsi2(63, -63);
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try test__negsi2(-62, 62);
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try test__negsi2(62, -62);
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try test__negsi2(-60, 60);
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try test__negsi2(60, -60);
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try test__negsi2(-56, 56);
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try test__negsi2(56, -56);
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try test__negsi2(-31, 31);
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try test__negsi2(31, -31);
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try test__negsi2(-30, 30);
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try test__negsi2(30, -30);
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try test__negsi2(-28, 28);
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try test__negsi2(28, -28);
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try test__negsi2(-24, 24);
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try test__negsi2(24, -24);
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try test__negsi2(-15, 15);
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try test__negsi2(15, -15);
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try test__negsi2(-14, 14);
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try test__negsi2(14, -14);
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try test__negsi2(-12, 12);
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try test__negsi2(12, -12);
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try test__negsi2(-8, 8);
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try test__negsi2(8, -8);
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}
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