Namespace for functions that produce 32- and 64-bit bit masks.
Declared in <bdlb_bitmaskutil.h>
struct BitMaskUtil;This utility struct provides a namespace for a set of bit-level, stateless functions that take one or two int arguments and return masks of the built-in 32- and 64-bit integer types uint32_t and uint64_t, respectively.
| Name | Description |
|---|---|
Unnamed enum | Number of bits in type uint32_t. |
| Name | Description |
|---|---|
eq | Return a mask with only the bit at index set. |
eq64 | Return a mask with only the bit at index set. |
ge | Return a mask with all bits at or above index set. |
ge64 | Return a mask with all bits at or above index set. |
gt | Return a mask with all bits above index set. |
gt64 | Return a mask with all bits above index set. |
le | Return a mask with all bits at or below index set. |
le64 | Return a mask with all bits at or below index set. |
lt | Return the unsigned integral value having all bits at positions less than the specified index set to 1, and all other bits set to 0. |
lt64 | Return a mask with all bits below index set. |
ne | Return a bitmask with the bit at index cleared. |
ne64 | Return a bitmask with the bit at index cleared. |
one | Return a mask with numBits bits set starting at index. |
one64 | Return a mask with numBits bits set starting at index. |
zero | Return the unsigned integral value having the specified numBits starting at the specified index set to 0, and all other bits set to 1. |
zero64 | Return a mask with numBits bits cleared starting at index. |