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stage2: add log and logf to freestanding libc

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This commit is contained in:
Andrew Kelley 2022-02-09 18:52:32 -07:00
parent f5471299d8
commit f2f1c63daf
2 changed files with 15 additions and 11 deletions
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18
lib/std/special/c.zig
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@ -17,9 +17,13 @@ comptime {
if (builtin.zig_backend != .stage1) { if (builtin.zig_backend != .stage1) {
@export(memset, .{ .name = "memset", .linkage = .Strong }); @export(memset, .{ .name = "memset", .linkage = .Strong });
@export(memcpy, .{ .name = "memcpy", .linkage = .Strong }); @export(memcpy, .{ .name = "memcpy", .linkage = .Strong });
@export(trunc, .{ .name = "trunc", .linkage = .Strong }); @export(trunc, .{ .name = "trunc", .linkage = .Strong });
@export(truncf, .{ .name = "truncf", .linkage = .Strong }); @export(truncf, .{ .name = "truncf", .linkage = .Strong });
@export(truncl, .{ .name = "truncl", .linkage = .Strong }); @export(truncl, .{ .name = "truncl", .linkage = .Strong });
@export(log, .{ .name = "log", .linkage = .Strong });
@export(logf, .{ .name = "logf", .linkage = .Strong });
} else { } else {
_ = @import("c_stage1.zig"); _ = @import("c_stage1.zig");
} }
@ -80,17 +84,25 @@ fn memcpy(noalias dest: ?[*]u8, noalias src: ?[*]const u8, len: usize) callconv(
return dest; return dest;
} }
fn trunc(a: f64) f64 { fn trunc(a: f64) callconv(.C) f64 {
return math.trunc(a); return math.trunc(a);
} }
fn truncf(a: f32) f32 { fn truncf(a: f32) callconv(.C) f32 {
return math.trunc(a); return math.trunc(a);
} }
fn truncl(a: c_longdouble) c_longdouble { fn truncl(a: c_longdouble) callconv(.C) c_longdouble {
if (!long_double_is_f128) { if (!long_double_is_f128) {
@panic("TODO implement this"); @panic("TODO implement this");
} }
return math.trunc(a); return math.trunc(a);
} }
fn log(a: f64) callconv(.C) f64 {
return math.ln(a);
}
fn logf(a: f32) callconv(.C) f32 {
return math.ln(a);
}

8
lib/std/special/c_stage1.zig
View file

@ -708,14 +708,6 @@ export fn exp2f(a: f32) f32 {
return math.exp2(a); return math.exp2(a);
} }
export fn log(a: f64) f64 {
return math.ln(a);
}
export fn logf(a: f32) f32 {
return math.ln(a);
}
export fn log2(a: f64) f64 { export fn log2(a: f64) f64 {
return math.log2(a); return math.log2(a);
} }