/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-â
âvi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :viâ
ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââ¡
â Copyright 2020 Justine Alexandra Roberts Tunney                              â
â                                                                              â
â Permission to use, copy, modify, and/or distribute this software for         â
â any purpose with or without fee is hereby granted, provided that the         â
â above copyright notice and this permission notice appear in all copies.      â
â                                                                              â
â THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                â
â WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                â
â WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             â
â AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         â
â DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        â
â PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               â
â TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             â
â PERFORMANCE OF THIS SOFTWARE.                                                â
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#include "libc/intrin/punpckhwd.h"
#include "libc/str/str.h"

/**
 * Interleaves high words.
 *
 *          0  1  2  3  4  5  6  7
 *       B  aa bb cc dd EE FF GG HH
 *       C  ii jj kk ll MM NN OO PP
 *                      ââ¤ ââ¤ ââ¤ ââ¤
 *              ââââââââââ  â  â  â
 *              â     âââââââ  â  â
 *              â     â     ââââ  â
 *          âââââ¤ âââââ¤ âââââ¤ âââââ¤
 *     â A  EE MM FF NN GG OO HH PP
 *
 * @param ð [w/o] receives reduced ð and ð interleaved
 * @param ð [r/o] supplies eight words
 * @param ð [r/o] supplies eight words
 * @mayalias
 */
void(punpckhwd)(uint16_t a[8], const uint16_t b[8], const uint16_t c[8]) {
  a[0] = b[4];
  a[1] = c[4];
  a[2] = b[5];
  a[3] = c[5];
  a[4] = b[6];
  a[5] = c[6];
  a[6] = b[7];
  a[7] = c[7];
}
