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util: Add util_memcpy_cpu_to_le32() v3

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v2:
  - Preserve word boundaries.

v3:
  - Use const and restrict.
  - Fix indentation.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
This commit is contained in:
Tom Stellard 2014-07-18 15:55:08 -04:00
parent 3d636b4785
commit f0e0737922
1 changed files with 17 additions and 0 deletions
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17
src/gallium/auxiliary/util/u_math.h
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@ -812,6 +812,23 @@ util_bswap16(uint16_t n)
(n << 8);
}
static INLINE void*
util_memcpy_cpu_to_le32(void * restrict dest, const void * restrict src, size_t n)
{
#ifdef PIPE_ARCH_BIG_ENDIAN
size_t i, e;
asset(n % 4 == 0);
for (i = 0, e = n / 4; i < e; i++) {
uint32_t * restrict d = (uint32_t* restrict)dest;
const uint32_t * restrict s = (const uint32_t* restrict)src;
d[i] = util_bswap32(s[i]);
}
return dest;
#else
return memcpy(dest, src, n);
#endif
}
/**
* Clamp X to [MIN, MAX].