diff options
Diffstat (limited to 'pkg/bits/bits32.go')
-rwxr-xr-x | pkg/bits/bits32.go | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/pkg/bits/bits32.go b/pkg/bits/bits32.go new file mode 100755 index 000000000..4e9e45dce --- /dev/null +++ b/pkg/bits/bits32.go @@ -0,0 +1,25 @@ +package bits + +// IsOn returns true if *all* bits set in 'bits' are set in 'mask'. +func IsOn32(mask, bits uint32) bool { + return mask&bits == bits +} + +// IsAnyOn returns true if *any* bit set in 'bits' is set in 'mask'. +func IsAnyOn32(mask, bits uint32) bool { + return mask&bits != 0 +} + +// Mask returns a T with all of the given bits set. +func Mask32(is ...int) uint32 { + ret := uint32(0) + for _, i := range is { + ret |= MaskOf32(i) + } + return ret +} + +// MaskOf is like Mask, but sets only a single bit (more efficiently). +func MaskOf32(i int) uint32 { + return uint32(1) << uint32(i) +} |