comparison PsiCLASS-1.0.2/samtools-0.1.19/bam_endian.h @ 0:903fc43d6227 draft default tip

Uploaded
author lsong10
date Fri, 26 Mar 2021 16:52:45 +0000
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:903fc43d6227
1 #ifndef BAM_ENDIAN_H
2 #define BAM_ENDIAN_H
3
4 #include <stdint.h>
5
6 static inline int bam_is_big_endian()
7 {
8 long one= 1;
9 return !(*((char *)(&one)));
10 }
11 static inline uint16_t bam_swap_endian_2(uint16_t v)
12 {
13 return (uint16_t)(((v & 0x00FF00FFU) << 8) | ((v & 0xFF00FF00U) >> 8));
14 }
15 static inline void *bam_swap_endian_2p(void *x)
16 {
17 *(uint16_t*)x = bam_swap_endian_2(*(uint16_t*)x);
18 return x;
19 }
20 static inline uint32_t bam_swap_endian_4(uint32_t v)
21 {
22 v = ((v & 0x0000FFFFU) << 16) | (v >> 16);
23 return ((v & 0x00FF00FFU) << 8) | ((v & 0xFF00FF00U) >> 8);
24 }
25 static inline void *bam_swap_endian_4p(void *x)
26 {
27 *(uint32_t*)x = bam_swap_endian_4(*(uint32_t*)x);
28 return x;
29 }
30 static inline uint64_t bam_swap_endian_8(uint64_t v)
31 {
32 v = ((v & 0x00000000FFFFFFFFLLU) << 32) | (v >> 32);
33 v = ((v & 0x0000FFFF0000FFFFLLU) << 16) | ((v & 0xFFFF0000FFFF0000LLU) >> 16);
34 return ((v & 0x00FF00FF00FF00FFLLU) << 8) | ((v & 0xFF00FF00FF00FF00LLU) >> 8);
35 }
36 static inline void *bam_swap_endian_8p(void *x)
37 {
38 *(uint64_t*)x = bam_swap_endian_8(*(uint64_t*)x);
39 return x;
40 }
41
42 #endif