/* FreeRDP: A Remote Desktop Protocol Client

 * Sign operations.

 * vi:ts=4 sw=4:

 *

 * (c) Copyright 2012 Hewlett-Packard Development Company, L.P.

 * Licensed under the Apache License, Version 2.0 (the "License"); you may

 * not use this file except in compliance with the License. You may obtain

 * a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express

 * or implied. See the License for the specific language governing

 * permissions and limitations under the License.

 */

#include <freerdp/config.h>

#include <freerdp/types.h>

#include <freerdp/primitives.h>

#include "prim_internal.h"

#include "prim_sign.h"

/* ----------------------------------------------------------------------------

 * Set pDst to the sign-value of the 16-bit values in pSrc (-1, 0, or 1).

 */

static pstatus_t general_sign_16s(const INT16* WINPR_RESTRICT pSrc, INT16* WINPR_RESTRICT pDst,

                                  UINT32 len)

{

  while (len--)

  {

    INT16 src = *pSrc++;

    *pDst++ = WINPR_ASSERTING_INT_CAST(int16_t, (src < 0) ? (-1) : ((src > 0) ? 1 : 0));

  }

  return PRIMITIVES_SUCCESS;

}

/* ------------------------------------------------------------------------- */

void primitives_init_sign(primitives_t* WINPR_RESTRICT prims)

{

  /* Start with the default. */

  prims->sign_16s = general_sign_16s;

}

void primitives_init_sign_opt(primitives_t* WINPR_RESTRICT prims)

{

  primitives_init_sign(prims);

  primitives_init_sign_ssse3(prims);

}