blake2_common.h

#include <stdint.h>
#include "byte_order.h"

static inline uint32_t load32(const void *src) {
  uint32_t w;
  memcpy(&w, src, sizeof w);
#if BYTE_ORDER == BIG_ENDIAN
  REVERSE32(w, w);
#endif
  return w;
}

static inline uint64_t load64(const void *src) {
  uint64_t w;
  memcpy(&w, src, sizeof w);
#if BYTE_ORDER == BIG_ENDIAN
  REVERSE64(w, w);
#endif
  return w;
}

static inline void store16(void *dst, uint16_t w) { memcpy(dst, &w, sizeof w); }

static inline void store32(void *dst, uint32_t w) {
#if BYTE_ORDER == BIG_ENDIAN
  REVERSE32(w, w);
#endif
  memcpy(dst, &w, sizeof w);
}

static inline void store64(void *dst, uint64_t w) {
#if BYTE_ORDER == BIG_ENDIAN
  REVERSE64(w, w);
#endif
  memcpy(dst, &w, sizeof w);
}

static inline uint32_t rotr32(const uint32_t w, const unsigned c) {
  return (w >> c) | (w << (32 - c));
}

static inline uint64_t rotr64(const uint64_t w, const unsigned c) {
  return (w >> c) | (w << (64 - c));
}