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libvapours: introduce BITL, MASK, MASKL, MASK2, MASK2L which were already present in other ams components

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TuxSH 2020-02-03 23:01:00 +00:00
parent 6ecf04c3b7
commit 877b2cf790
1 changed files with 25 additions and 0 deletions
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25
libraries/libvapours/include/vapours/types.hpp
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@ -52,6 +52,31 @@ typedef u32 Result; ///< Function error code result type.
#define BIT(n) (1U<<(n)) #define BIT(n) (1U<<(n))
#endif #endif
/// Creates a bitmask from a bit number (long).
#ifndef BITL
#define BITL(n) (1UL<<(n))
#endif
/// Creates a bitmask representing the n least significant bits.
#ifndef MASK
#define MASK(n) (BIT(n) - 1U)
#endif
/// Creates a bitmask representing the n least significant bits (long).
#ifndef MASKL
#define MASKL(n) (BITL(n) - 1UL)
#endif
/// Creates a bitmask for bit range extraction.
#ifndef MASK2
#define MASK2(a,b) (MASK(a) & ~MASK(b))
#endif
/// Creates a bitmask for bit range extraction (long).
#ifndef MASK2L
#define MASK2L(a,b) (MASKL(a) & ~MASKL(b))
#endif
/// Marks a function as not returning, for the purposes of compiler optimization. /// Marks a function as not returning, for the purposes of compiler optimization.
#ifndef NORETURN #ifndef NORETURN
#define NORETURN __attribute__((noreturn)) #define NORETURN __attribute__((noreturn))