/*
 * Copyright (C) 2007 Michael Lewis
 * Author: Mike Lewis <mikelikespie@gmail.com>
 *
 * This work is provide AS IS, and has no warranty.
 * The author is NOT responsible for anything that happens
 * due to use of this code, either using it or running it on
 * your system
 */
#ifndef _HELPERS_H_INCLUDED
#define _HELPERS_H_INCLUDED
#include "fakesse.h"

static inline __m128i shift_pack_left127( __m128i A ) {
	return _mm_srli_si128( _mm_srli_epi32( A, 7 ), 15 );
}

static inline __m128i shift_pack_left( __m128i A ) {
	const __m128i endmask = _mm_set_epi8( 0xff,0x00,0x00,0x00,
										 0x00,0x00,0x00,0x00,
										 0x00,0x00,0x00,0x00,
										 0x00,0x00,0x00,0x00);

	__m128i temp1 = _mm_and_si128( endmask, _mm_srli_epi32( _mm_slli_si128( A, 15 ), 1 ) );
	__m128i temp2 = _mm_srli_si128( A, 1 );
	return _mm_or_si128( temp1, temp2 );
}

static inline __m128i shift_pack_right127( __m128i A ) {
	return _mm_slli_si128( _mm_slli_epi32( A, 7 ), 15 );
}

static inline __m128i shift_pack_right( __m128i A ) {
	const __m128i startmask = _mm_set_epi8( 0x00,0x00,0x00,0x00,
											0x00,0x00,0x00,0x00,
											0x00,0x00,0x00,0x00,
											0x00,0x00,0x00,0xFF);

	__m128i temp1 = _mm_and_si128( startmask, _mm_slli_epi32( _mm_srli_si128( A, 15 ), 1 ) );
	__m128i temp2 = _mm_slli_si128( A, 1 );
	return _mm_or_si128( temp1, temp2 );
}	


static inline __m128i unpack( __m128i A, int row ) {
	const __m128i onemask = _mm_set1_epi8( 0x01 );
	__m128i shift = _mm_srli_epi32( A, row );
	return _mm_and_si128( shift, onemask );
}

// MAKE SURE A IS IN THE FORM (0xFF) not (0x01
// ( a | mask ) | ( ~mask & b )
static inline __m128i pack( __m128i A, int row ) {
	const __m128i onemask = _mm_set1_epi8( 0x01 );
	A = _mm_and_si128( onemask, A );
	return _mm_slli_epi32(A, row);
}

//The get and set ops are scalar and slow.
__m128i set_bit( __m128i A, int col );
char get_bit( __m128i A, int col );
void print_packed_row( __m128i A );


void print_life_block( life_block *block );

void set_bit_in_block( life_block *block, int row, int column );

#endif //_HELPERS_H_INCLUDED