blob: 0a7eb8322320c6526473cc16899030ecd6af2957 [file] [log] [blame]
/*
* const.h: Macros for dealing with constants.
*
* SPDX-License-Identifier: GPL-2.0
*/
#ifndef _LINUX_CONST_H
#define _LINUX_CONST_H
/* Some constant macros are used in both assembler and
* C code. Therefore we cannot annotate them always with
* 'UL' and other type specifiers unilaterally. We
* use the following macros to deal with this.
*
* Similarly, _AT() will cast an expression with a type in C, but
* leave it unchanged in asm.
*/
#ifdef __ASSEMBLY__
#define _AT(T,X) X
#else
#define _AT(T,X) ((T)(X))
#endif
#define _BITUL(x) (_AC(1,UL) << (x))
#define _BITULL(x) (_AC(1,ULL) << (x))
#endif /* !(_LINUX_CONST_H) */