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correct counting bits to return a u8

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Also add an impl to the dev backend
This commit is contained in:
Brendan Hansknecht 2023-12-03 15:41:49 -08:00
parent e336aa525c
commit 6692f5b15d
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4 changed files with 36 additions and 21 deletions
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12
crates/compiler/builtins/bitcode/src/num.zig
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@ -633,8 +633,8 @@ pub fn exportMulOrPanic(comptime T: type, comptime W: type, comptime name: []con
pub fn exportCountLeadingZeroBits(comptime T: type, comptime name: []const u8) void {
comptime var f = struct {
fn func(self: T) callconv(.C) usize {
return @as(usize, @clz(self));
fn func(self: T) callconv(.C) u8 {
return @as(u8, @clz(self));
}
}.func;
@export(f, .{ .name = name ++ @typeName(T), .linkage = .Strong });
@ -642,8 +642,8 @@ pub fn exportCountLeadingZeroBits(comptime T: type, comptime name: []const u8) v
pub fn exportCountTrailingZeroBits(comptime T: type, comptime name: []const u8) void {
comptime var f = struct {
fn func(self: T) callconv(.C) usize {
return @as(usize, @ctz(self));
fn func(self: T) callconv(.C) u8 {
return @as(u8, @ctz(self));
}
}.func;
@export(f, .{ .name = name ++ @typeName(T), .linkage = .Strong });
@ -651,8 +651,8 @@ pub fn exportCountTrailingZeroBits(comptime T: type, comptime name: []const u8)
pub fn exportCountOneBits(comptime T: type, comptime name: []const u8) void {
comptime var f = struct {
fn func(self: T) callconv(.C) usize {
return @as(usize, @popCount(self));
fn func(self: T) callconv(.C) u8 {
return @as(u8, @popCount(self));
}
}.func;
@export(f, .{ .name = name ++ @typeName(T), .linkage = .Strong });