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morton.c
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morton.c
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/* morton extension for PHP */
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "php.h"
#include "ext/standard/info.h"
#include "php_morton.h"
#include <immintrin.h>
/* {{{ int morton_interleave2( int $x, int $y )
*/
PHP_FUNCTION(morton_interleave2)
{
zend_ulong x, y;
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_LONG(x)
Z_PARAM_LONG(y)
ZEND_PARSE_PARAMETERS_END();
RETURN_LONG(_pdep_u64(x, 0x5555555555555555) | _pdep_u64(y, 0xaaaaaaaaaaaaaaaa));
}
/* }}}*/
/* {{{ void morton_deinterleave2( int $hash, int &$x, int &$y )
*/
PHP_FUNCTION(morton_deinterleave2)
{
zend_ulong hash;
zval *zX = NULL, *zY = NULL;
ZEND_PARSE_PARAMETERS_START(3, 3)
Z_PARAM_LONG(hash)
Z_PARAM_ZVAL_DEREF(zX)
Z_PARAM_ZVAL_DEREF(zY)
ZEND_PARSE_PARAMETERS_END();
zval_ptr_dtor(zX);
ZVAL_LONG(zX, (int32_t) _pext_u64(hash, 0x5555555555555555));
zval_ptr_dtor(zY);
ZVAL_LONG(zY, (int32_t) _pext_u64(hash, 0xaaaaaaaaaaaaaaaa));
}
/* }}}*/
/* {{{ int morton_interleave3( int $x, int $y, int $z )
*/
PHP_FUNCTION(morton_interleave3)
{
zend_ulong x, y, z;
ZEND_PARSE_PARAMETERS_START(3, 3)
Z_PARAM_LONG(x)
Z_PARAM_LONG(y)
Z_PARAM_LONG(z)
ZEND_PARSE_PARAMETERS_END();
RETURN_LONG(_pdep_u64(x, 0x9249249249249249) | _pdep_u64(y, 0x2492492492492492) | _pdep_u64(z, 0x4924924924924924));
}
/* }}}*/
/* {{{ void morton_deinterleave3( int $hash, int &$x, int &$y, int &$z )
*/
PHP_FUNCTION(morton_deinterleave3)
{
zend_ulong hash;
zval *zX = NULL, *zY = NULL, *zZ = NULL;
ZEND_PARSE_PARAMETERS_START(4, 4)
Z_PARAM_LONG(hash)
Z_PARAM_ZVAL_DEREF(zX)
Z_PARAM_ZVAL_DEREF(zY)
Z_PARAM_ZVAL_DEREF(zZ)
ZEND_PARSE_PARAMETERS_END();
zend_ulong x, y, z;
x = ((int32_t) _pext_u64(hash, 0x9249249249249249)) << 11 >> 11;
y = ((int32_t) _pext_u64(hash, 0x2492492492492492)) << 11 >> 11;
z = ((int32_t) _pext_u64(hash, 0x4924924924924924)) << 11 >> 11;
zval_ptr_dtor(zX);
ZVAL_LONG(zX, x);
zval_ptr_dtor(zY);
ZVAL_LONG(zY, y);
zval_ptr_dtor(zZ);
ZVAL_LONG(zZ, z);
}
/* }}}*/
/* {{{ PHP_RINIT_FUNCTION
*/
PHP_RINIT_FUNCTION(morton)
{
#if defined(ZTS) && defined(COMPILE_DL_MORTON)
ZEND_TSRMLS_CACHE_UPDATE();
#endif
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION
*/
PHP_MINFO_FUNCTION(morton)
{
php_info_print_table_start();
php_info_print_table_header(2, "morton support", "enabled");
php_info_print_table_end();
}
/* }}} */
/* {{{ arginfo
*/
ZEND_BEGIN_ARG_INFO(arginfo_morton_interleave2, 0)
ZEND_ARG_INFO(0, x)
ZEND_ARG_INFO(0, y)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_morton_deinterleave2, 0)
ZEND_ARG_INFO(0, hash)
ZEND_ARG_INFO(1, x)
ZEND_ARG_INFO(1, y)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_morton_interleave3, 0)
ZEND_ARG_INFO(0, x)
ZEND_ARG_INFO(0, y)
ZEND_ARG_INFO(0, z)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_morton_deinterleave3, 0)
ZEND_ARG_INFO(0, hash)
ZEND_ARG_INFO(1, x)
ZEND_ARG_INFO(1, y)
ZEND_ARG_INFO(1, z)
ZEND_END_ARG_INFO()
/* }}} */
/* {{{ morton_functions[]
*/
static const zend_function_entry morton_functions[] = {
PHP_FE(morton_interleave2, arginfo_morton_interleave2)
PHP_FE(morton_deinterleave2, arginfo_morton_deinterleave2)
PHP_FE(morton_interleave3, arginfo_morton_interleave3)
PHP_FE(morton_deinterleave3, arginfo_morton_deinterleave3)
PHP_FE_END
};
/* }}} */
/* {{{ morton_module_entry
*/
zend_module_entry morton_module_entry = {
STANDARD_MODULE_HEADER,
"morton", /* Extension name */
morton_functions, /* zend_function_entry */
NULL, /* PHP_MINIT - Module initialization */
NULL, /* PHP_MSHUTDOWN - Module shutdown */
PHP_RINIT(morton), /* PHP_RINIT - Request initialization */
NULL, /* PHP_RSHUTDOWN - Request shutdown */
PHP_MINFO(morton), /* PHP_MINFO - Module info */
PHP_MORTON_VERSION, /* Version */
STANDARD_MODULE_PROPERTIES
};
/* }}} */
#ifdef COMPILE_DL_MORTON
# ifdef ZTS
ZEND_TSRMLS_CACHE_DEFINE()
# endif
ZEND_GET_MODULE(morton)
#endif