mirror of
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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"
37 lines
869 B
Zig
37 lines
869 B
Zig
// negv - negate oVerflow
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// * @panic, if result can not be represented
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// - negvXi4_generic for unoptimized version
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// assume -0 == 0 is gracefully handled by the hardware
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inline fn negvXi(comptime ST: type, a: ST) ST {
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const UT = switch (ST) {
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i32 => u32,
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i64 => u64,
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i128 => u128,
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else => unreachable,
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};
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const N: UT = @bitSizeOf(ST);
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const min: ST = @bitCast(ST, (@as(UT, 1) << (N - 1)));
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if (a == min)
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@panic("compiler_rt negv: overflow");
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return -a;
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}
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pub fn __negvsi2(a: i32) callconv(.C) i32 {
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return negvXi(i32, a);
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}
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pub fn __negvdi2(a: i64) callconv(.C) i64 {
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return negvXi(i64, a);
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}
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pub fn __negvti2(a: i128) callconv(.C) i128 {
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return negvXi(i128, a);
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}
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test {
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_ = @import("negvsi2_test.zig");
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_ = @import("negvdi2_test.zig");
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_ = @import("negvti2_test.zig");
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}
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