1  #ifndef NUMPY_CORE_INCLUDE_NUMPY_NPY_ENDIAN_H_
 2  #define NUMPY_CORE_INCLUDE_NUMPY_NPY_ENDIAN_H_
 3  
 4  /*
 5   * NPY_BYTE_ORDER is set to the same value as BYTE_ORDER set by glibc in
 6   * endian.h
 7   */
 8  
 9  #if defined(NPY_HAVE_ENDIAN_H) || defined(NPY_HAVE_SYS_ENDIAN_H)
10      /* Use endian.h if available */
11  
12      #if defined(NPY_HAVE_ENDIAN_H)
13      #include <endian.h>
14      #elif defined(NPY_HAVE_SYS_ENDIAN_H)
15      #include <sys/endian.h>
16      #endif
17  
18      #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && defined(LITTLE_ENDIAN)
19          #define NPY_BYTE_ORDER    BYTE_ORDER
20          #define NPY_LITTLE_ENDIAN LITTLE_ENDIAN
21          #define NPY_BIG_ENDIAN    BIG_ENDIAN
22      #elif defined(_BYTE_ORDER) && defined(_BIG_ENDIAN) && defined(_LITTLE_ENDIAN)
23          #define NPY_BYTE_ORDER    _BYTE_ORDER
24          #define NPY_LITTLE_ENDIAN _LITTLE_ENDIAN
25          #define NPY_BIG_ENDIAN    _BIG_ENDIAN
26      #elif defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && defined(__LITTLE_ENDIAN)
27          #define NPY_BYTE_ORDER    __BYTE_ORDER
28          #define NPY_LITTLE_ENDIAN __LITTLE_ENDIAN
29          #define NPY_BIG_ENDIAN    __BIG_ENDIAN
30      #endif
31  #endif
32  
33  #ifndef NPY_BYTE_ORDER
34      /* Set endianness info using target CPU */
35      #include "npy_cpu.h"
36  
37      #define NPY_LITTLE_ENDIAN 1234
38      #define NPY_BIG_ENDIAN 4321
39  
40      #if defined(NPY_CPU_X86)                  \
41              || defined(NPY_CPU_AMD64)         \
42              || defined(NPY_CPU_IA64)          \
43              || defined(NPY_CPU_ALPHA)         \
44              || defined(NPY_CPU_ARMEL)         \
45              || defined(NPY_CPU_ARMEL_AARCH32) \
46              || defined(NPY_CPU_ARMEL_AARCH64) \
47              || defined(NPY_CPU_SH_LE)         \
48              || defined(NPY_CPU_MIPSEL)        \
49              || defined(NPY_CPU_PPC64LE)       \
50              || defined(NPY_CPU_ARCEL)         \
51              || defined(NPY_CPU_RISCV64)       \
52              || defined(NPY_CPU_LOONGARCH)     \
53              || defined(NPY_CPU_WASM)
54          #define NPY_BYTE_ORDER NPY_LITTLE_ENDIAN
55  
56      #elif defined(NPY_CPU_PPC)                \
57              || defined(NPY_CPU_SPARC)         \
58              || defined(NPY_CPU_S390)          \
59              || defined(NPY_CPU_HPPA)          \
60              || defined(NPY_CPU_PPC64)         \
61              || defined(NPY_CPU_ARMEB)         \
62              || defined(NPY_CPU_ARMEB_AARCH32) \
63              || defined(NPY_CPU_ARMEB_AARCH64) \
64              || defined(NPY_CPU_SH_BE)         \
65              || defined(NPY_CPU_MIPSEB)        \
66              || defined(NPY_CPU_OR1K)          \
67              || defined(NPY_CPU_M68K)          \
68              || defined(NPY_CPU_ARCEB)
69          #define NPY_BYTE_ORDER NPY_BIG_ENDIAN
70  
71      #else
72          #error Unknown CPU: can not set endianness
73      #endif
74  
75  #endif
76  
77  #endif  /* NUMPY_CORE_INCLUDE_NUMPY_NPY_ENDIAN_H_ */