block.h

#ifndef LIBDPF_BLOCK_H
#define LIBDPF_BLOCK_H

#include <wmmintrin.h>
#include <emmintrin.h>
#include <xmmintrin.h>

typedef __m128i block;

#define dpf_xor(x,y)     _mm_xor_si128(x,y)
#define dpf_zero_block() _mm_setzero_si128()
#define dpf_equal(x,y)   (_mm_movemask_epi8(_mm_cmpeq_epi8(x,y)) == 0xffff)
#define dpf_unequal(x,y) (_mm_movemask_epi8(_mm_cmpeq_epi8(x,y)) != 0xffff)

#define dpf_lsb(x) (*((char *) &x) & 1)
#define dpf_make_block(X,Y) _mm_set_epi64((__m64)(X), (__m64)(Y))
#define dpf_double(B) _mm_slli_epi64(B,1)

#define dpf_left_shirt(v, n) \
({ \
    __m128i v1, v2; \
 \
    if ((n) >= 64) \
    { \
        v1 = _mm_slli_si128(v, 8); \
        v1 = _mm_slli_epi64(v1, (n) - 64); \
    } \
    else \
    { \
        v1 = _mm_slli_epi64(v, n); \
        v2 = _mm_slli_si128(v, 8); \
        v2 = _mm_srli_epi64(v2, 64 - (n)); \
        v1 = _mm_or_si128(v1, v2); \
    } \
    v1; \
})


#include <stdio.h>

block
dpf_seed(block *seed);
block
dpf_random_block(void);
block *
dpf_allocate_blocks(size_t nblocks);

void
dpf_cb(block input);
void dpf_cbnotnewline(block input);

#endif