bitUtils.h File Reference

#include "pxr/pxr.h"
#include <cstddef>
#include <type_traits>

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Classes
struct	Tf_NumBits< N, SUM, BIT >
struct	Tf_NumBits< N, SUM, 0 >

Macros
#define	TF_BITS_FOR_VALUES(n)
#define	TF_BITS_FOR_ENUM_VALUES(n)

Macro Definition Documentation

#define TF_BITS_FOR_ENUM_VALUES

(

n

)

Compute the number of bits required to store the given number of (signed) enum values.

Note

This is intended to be used when storing enum values in a bitfield without casting the enum type to an unsigned integer. (At least GCC considers enums to be signed and hence wastes one bit when all enumerants are non-negative).

Definition at line 77 of file bitUtils.h.

#define TF_BITS_FOR_VALUES

(

n

)

Compute the number of bits required to store the given number of values.

Note that the computed result for a number smaller or equal to zero is undefined. The input number can be any compile-time constant.

Definition at line 44 of file bitUtils.h.