mirror of
https://codeberg.org/ziglang/zig.git
synced 2026-03-08 04:24:33 +01:00
74608293af
use the "symbol" helper function in all exports move all declarations from common.zig to compiler_rt.zig flatten the tree structure somewhat (move contents of tiny files into parent files) No functional changes.
56 lines
1.4 KiB
Zig
56 lines
1.4 KiB
Zig
const std = @import("std");
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const builtin = @import("builtin");
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const arch = builtin.cpu.arch;
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const compiler_rt = @import("../compiler_rt.zig");
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const symbol = compiler_rt.symbol;
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comptime {
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symbol(&__fabsh, "__fabsh");
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symbol(&fabsf, "fabsf");
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symbol(&fabs, "fabs");
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symbol(&__fabsx, "__fabsx");
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if (compiler_rt.want_ppc_abi) {
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symbol(&fabsq, "fabsf128");
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}
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symbol(&fabsq, "fabsq");
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symbol(&fabsl, "fabsl");
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}
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pub fn __fabsh(a: f16) callconv(.c) f16 {
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return generic_fabs(a);
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}
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pub fn fabsf(a: f32) callconv(.c) f32 {
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return generic_fabs(a);
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}
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pub fn fabs(a: f64) callconv(.c) f64 {
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return generic_fabs(a);
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}
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pub fn __fabsx(a: f80) callconv(.c) f80 {
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return generic_fabs(a);
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}
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pub fn fabsq(a: f128) callconv(.c) f128 {
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return generic_fabs(a);
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}
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pub fn fabsl(x: c_longdouble) callconv(.c) c_longdouble {
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switch (@typeInfo(c_longdouble).float.bits) {
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16 => return __fabsh(x),
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32 => return fabsf(x),
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64 => return fabs(x),
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80 => return __fabsx(x),
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128 => return fabsq(x),
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else => @compileError("unreachable"),
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}
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}
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inline fn generic_fabs(x: anytype) @TypeOf(x) {
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const T = @TypeOf(x);
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const TBits = std.meta.Int(.unsigned, @typeInfo(T).float.bits);
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const float_bits: TBits = @bitCast(x);
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const remove_sign = ~@as(TBits, 0) >> 1;
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return @bitCast(float_bits & remove_sign);
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}
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