mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-18 03:22:40 +00:00
fa20edc44d
- Remove most __ASSEMBLER__ __LINKER__ ifdefs - Rename libc/intrin/bits.h to libc/serialize.h - Block pthread cancelation in fchmodat() polyfill - Remove `clang-format off` statements in third_party
30 lines
982 B
C
30 lines
982 B
C
#ifndef COSMOPOLITAN_LIBC_ALG_REVERSE_H_
|
|
#define COSMOPOLITAN_LIBC_ALG_REVERSE_H_
|
|
#include "libc/intrin/xchg.internal.h"
|
|
|
|
/**
|
|
* Reverses array.
|
|
*
|
|
* @param ARRAY is a typed array or a pointer to one
|
|
* @param COUNT is the number of items
|
|
* @return pointer to start of array
|
|
* @see ARRAYLEN()
|
|
*/
|
|
#define reverse(ARRAY, COUNT) \
|
|
({ \
|
|
autotype(&(ARRAY)[0]) Array = (ARRAY); \
|
|
size_t Count = (COUNT); \
|
|
if (Count) { \
|
|
size_t Start = 0; \
|
|
size_t End = Count - 1; \
|
|
while (Start < End) { \
|
|
xchg(&Array[Start], &Array[End]); \
|
|
++Start; \
|
|
--End; \
|
|
} \
|
|
} \
|
|
Array; \
|
|
})
|
|
|
|
#endif /* COSMOPOLITAN_LIBC_ALG_REVERSE_H_ */
|