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diff --git a/src/zix/digest.c b/src/zix/digest.c
index 889cfde..00b9fcf 100644
--- a/src/zix/digest.c
+++ b/src/zix/digest.c
@@ -38,10 +38,12 @@ zix_digest_add(uint32_t hash, const void* const buf, const size_t len)
{
const uint8_t* str = (const uint8_t*)buf;
+#ifdef __x86_64__
for (size_t i = 0; i < (len / sizeof(uint64_t)); ++i) {
hash = (uint32_t)_mm_crc32_u64(hash, *(const uint64_t*)str);
str += sizeof(uint64_t);
}
+#endif
if (len & sizeof(uint32_t)) {
hash = _mm_crc32_u32(hash, *(const uint32_t*)str);
str += sizeof(uint32_t);
@@ -57,6 +59,7 @@ zix_digest_add(uint32_t hash, const void* const buf, const size_t len)
return hash;
}
+#ifdef __x86_64__
ZIX_API uint32_t
zix_digest_add_64(uint32_t hash, const void* const buf, const size_t len)
{
@@ -72,12 +75,17 @@ zix_digest_add_64(uint32_t hash, const void* const buf, const size_t len)
return hash;
}
+#endif
ZIX_API uint32_t
zix_digest_add_ptr(const uint32_t hash, const void* const ptr)
{
#if UINTPTR_MAX == UINT64_MAX
- return (uint32_t)_mm_crc32_u64(hash, (uintptr_t)ptr);
+ #ifdef __x86_64__
+ return (uint32_t)_mm_crc32_u64(hash, (uintptr_t)ptr);
+ #else
+ return (uint32_t)_mm_crc32_u32(hash, (uintptr_t)ptr);
+ #endif
#else
return _mm_crc32_u32(hash, (uintptr_t)ptr);
#endif
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