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zig libc: simplify implementation

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- use symbol export helper
- move all declarations from common.zig into c.zig
- correct documentation
- delete dead code
This commit is contained in:
Andrew Kelley
2026-02-10 13:06:18 -08:00
parent 6840326711
commit 96bd268c8c
18 changed files with 382 additions and 371 deletions
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lib/c/stdlib.zig
+28 -26
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@@ -1,47 +1,49 @@
const std = @import("std");
const common = @import("common.zig");
const builtin = @import("builtin");
const std = @import("std");
const assert = std.debug.assert;
const div_t = std.c.div_t;
const ldiv_t = std.c.ldiv_t;
const lldiv_t = std.c.lldiv_t;
const symbol = @import("../c.zig").symbol;
comptime {
_ = @import("stdlib/rand.zig");
_ = @import("stdlib/drand48.zig");
if (builtin.target.isMuslLibC() or builtin.target.isWasiLibC()) {
// Functions specific to musl and wasi-libc.
@export(&abs, .{ .name = "abs", .linkage = common.linkage, .visibility = common.visibility });
@export(&labs, .{ .name = "labs", .linkage = common.linkage, .visibility = common.visibility });
@export(&llabs, .{ .name = "llabs", .linkage = common.linkage, .visibility = common.visibility });
symbol(&abs, "abs");
symbol(&labs, "labs");
symbol(&llabs, "llabs");
@export(&div, .{ .name = "div", .linkage = common.linkage, .visibility = common.visibility });
@export(&ldiv, .{ .name = "ldiv", .linkage = common.linkage, .visibility = common.visibility });
@export(&lldiv, .{ .name = "lldiv", .linkage = common.linkage, .visibility = common.visibility });
symbol(&div, "div");
symbol(&ldiv, "ldiv");
symbol(&lldiv, "lldiv");
@export(&atoi, .{ .name = "atoi", .linkage = common.linkage, .visibility = common.visibility });
@export(&atol, .{ .name = "atol", .linkage = common.linkage, .visibility = common.visibility });
@export(&atoll, .{ .name = "atoll", .linkage = common.linkage, .visibility = common.visibility });
symbol(&atoi, "atoi");
symbol(&atol, "atol");
symbol(&atoll, "atoll");
@export(&strtol, .{ .name = "strtol", .linkage = common.linkage, .visibility = common.visibility });
@export(&strtoll, .{ .name = "strtoll", .linkage = common.linkage, .visibility = common.visibility });
@export(&strtoul, .{ .name = "strtoul", .linkage = common.linkage, .visibility = common.visibility });
@export(&strtoull, .{ .name = "strtoull", .linkage = common.linkage, .visibility = common.visibility });
@export(&strtoimax, .{ .name = "strtoimax", .linkage = common.linkage, .visibility = common.visibility });
@export(&strtoumax, .{ .name = "strtoumax", .linkage = common.linkage, .visibility = common.visibility });
symbol(&strtol, "strtol");
symbol(&strtoll, "strtoll");
symbol(&strtoul, "strtoul");
symbol(&strtoull, "strtoull");
symbol(&strtoimax, "strtoimax");
symbol(&strtoumax, "strtoumax");
@export(&strtol, .{ .name = "__strtol_internal", .linkage = common.linkage, .visibility = common.visibility });
@export(&strtoll, .{ .name = "__strtoll_internal", .linkage = common.linkage, .visibility = common.visibility });
@export(&strtoul, .{ .name = "__strtoul_internal", .linkage = common.linkage, .visibility = common.visibility });
@export(&strtoull, .{ .name = "__strtoull_internal", .linkage = common.linkage, .visibility = common.visibility });
@export(&strtoimax, .{ .name = "__strtoimax_internal", .linkage = common.linkage, .visibility = common.visibility });
@export(&strtoumax, .{ .name = "__strtoumax_internal", .linkage = common.linkage, .visibility = common.visibility });
symbol(&strtol, "__strtol_internal");
symbol(&strtoll, "__strtoll_internal");
symbol(&strtoul, "__strtoul_internal");
symbol(&strtoull, "__strtoull_internal");
symbol(&strtoimax, "__strtoimax_internal");
symbol(&strtoumax, "__strtoumax_internal");
@export(&qsort_r, .{ .name = "qsort_r", .linkage = common.linkage, .visibility = common.visibility });
@export(&qsort, .{ .name = "qsort", .linkage = common.linkage, .visibility = common.visibility });
symbol(&qsort_r, "qsort_r");
symbol(&qsort, "qsort");
@export(&bsearch, .{ .name = "bsearch", .linkage = common.linkage, .visibility = common.visibility });
symbol(&bsearch, "bsearch");
}
}