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add Num.count*Bits functions

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Brendan Hansknecht 2023-03-12 01:24:09 -08:00
parent fbaa257cef
commit 785da377c8
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11 changed files with 207 additions and 8 deletions
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27
crates/compiler/builtins/bitcode/src/num.zig
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@ -460,3 +460,30 @@ pub fn exportMulOrPanic(comptime T: type, comptime W: type, comptime name: []con
}.func;
@export(f, .{ .name = name ++ @typeName(T), .linkage = .Strong });
}
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(T, self));
}
}.func;
@export(f, .{ .name = name ++ @typeName(T), .linkage = .Strong });
}
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(T, self));
}
}.func;
@export(f, .{ .name = name ++ @typeName(T), .linkage = .Strong });
}
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(T, self));
}
}.func;
@export(f, .{ .name = name ++ @typeName(T), .linkage = .Strong });
}