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amath
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Improve endianness detection

This commit is contained in:
Carsten Larsen 2017-07-14 10:53:37 +02:00
parent 263636bb04
commit 4b44d05953
1 changed files with 16 additions and 1 deletions
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17
src/real/prim.h
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@ -52,6 +52,20 @@ double __kernel_sin(double x, double y, int iy);
double __kernel_tan(double x, double y, int iy);
int __kernel_rem_pio2(double* x, double* y, int e0, int nx, int prec, const int* ipio2);
/* Detect LE CPUs using compiler macro */
#if !defined(__IEEE_LITTLE_ENDIAN) && !defined(__IEEE_BIG_ENDIAN)
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define __IEEE_LITTLE_ENDIAN
#endif
#endif
/* Detect BE CPUs using compiler macro */
#if !defined(__IEEE_LITTLE_ENDIAN) && !defined(__IEEE_BIG_ENDIAN)
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
#define __IEEE_BIG_ENDIAN
#endif
#endif
/* Detect ARM CPUs */
#if !defined(__IEEE_LITTLE_ENDIAN) && !defined(__IEEE_BIG_ENDIAN)
#if defined(__arm__) || defined(__ARM_ARCH_2__) || \
@ -106,7 +120,8 @@ int __kernel_rem_pio2(double* x, double* y, int e0, int nx, int prec, const int*
/* Detect other BE CPUs */
#if !defined(__IEEE_LITTLE_ENDIAN) && !defined(__IEEE_BIG_ENDIAN)
#if defined(PPCCPU) || defined(__PPC__) || \
defined(__powerpc__) || defined(__powerpc64__)
defined(__powerpc__) || defined(__powerpc64__) \
defined(__mips__) || defined(__mips)
#define __IEEE_BIG_ENDIAN
#endif
#endif