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48 lines
791 B
C
48 lines
791 B
C
#ifdef __APPLE__
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#include <libkern/OSByteOrder.h>
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uint64_t xle64dec(const uint8_t *d) {
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return OSReadLittleInt64(d, 0);
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}
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void xle64enc(uint8_t *d, uint64_t n) {
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OSWriteLittleInt64(d, 0, n);
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}
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#elif defined(__linux__)
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#define _BSD_SOURCE
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#include <stdint.h>
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#include <asm/byteorder.h>
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uint64_t xle64dec(const uint8_t *d) {
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return __le64_to_cpu(*(uint64_t*)d);
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}
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void xle64enc(uint8_t *d, uint64_t n) {
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*(uint64_t*)d = __cpu_to_le64(n);
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}
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#else
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// Platform independent
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#include <stdint.h>
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uint64_t xle64dec(const uint8_t *d) {
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uint64_t r = 0;
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for (const uint8_t *p = d + sizeof(r) - 1; p >= d; --p)
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r = (r << 8) + *p;
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return r;
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}
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void xle64enc(uint8_t *d, uint64_t n) {
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for (uint8_t *p = d; p < d + sizeof(n); ++p) {
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*p = n & 0xff;
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n >>= 8;
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}
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}
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#endif
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