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freestanding libc: include roundl

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Andrew Kelley 2022-03-14 00:08:31 -07:00
parent 547e6f6ee1
commit 2a50a4629b
2 changed files with 13 additions and 1 deletions
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4
lib/std/math/round.zig
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@ -20,6 +20,10 @@ pub fn round(x: anytype) @TypeOf(x) {
f32 => round32(x), f32 => round32(x),
f64 => round64(x), f64 => round64(x),
f128 => round128(x), f128 => round128(x),
// TODO this is not correct for some targets
c_longdouble => @floatCast(c_longdouble, round128(x)),
else => @compileError("round not implemented for " ++ @typeName(T)), else => @compileError("round not implemented for " ++ @typeName(T)),
}; };
} }

10
lib/std/special/c.zig
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@ -98,6 +98,7 @@ comptime {
@export(round, .{ .name = "round", .linkage = .Strong }); @export(round, .{ .name = "round", .linkage = .Strong });
@export(roundf, .{ .name = "roundf", .linkage = .Strong }); @export(roundf, .{ .name = "roundf", .linkage = .Strong });
@export(roundl, .{ .name = "roundl", .linkage = .Strong });
@export(fmin, .{ .name = "fmin", .linkage = .Strong }); @export(fmin, .{ .name = "fmin", .linkage = .Strong });
@export(fminf, .{ .name = "fminf", .linkage = .Strong }); @export(fminf, .{ .name = "fminf", .linkage = .Strong });
@ -575,11 +576,18 @@ fn fabsf(a: f32) callconv(.C) f32 {
return math.fabs(a); return math.fabs(a);
} }
fn roundf(a: f32) callconv(.C) f32 {
return math.round(a);
}
fn round(a: f64) callconv(.C) f64 { fn round(a: f64) callconv(.C) f64 {
return math.round(a); return math.round(a);
} }
fn roundf(a: f32) callconv(.C) f32 { fn roundl(a: c_longdouble) callconv(.C) c_longdouble {
if (!long_double_is_f128) {
@panic("TODO implement this");
}
return math.round(a); return math.round(a);
} }