1 files changed, 0 insertions, 110 deletions
diff --git a/nuttx/libc/fixedmath/lib_b16sin.c b/nuttx/libc/fixedmath/lib_b16sin.c
deleted file mode 100644
index 9cd2f0da3..000000000
--- a/nuttx/libc/fixedmath/lib_b16sin.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/****************************************************************************
- * libc/fixedmath/lib_b16sin.c
- *
- *   Copyright (C) 2008, 2011 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <fixedmath.h>
-
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
-#define b16_P225       0x0000399a
-#define b16_P405284735 0x000067c1
-#define b16_1P27323954 0x000145f3
-
-/****************************************************************************
- * Global Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: b16sin
- * Ref: http://lab.polygonal.de/2007/07/18/fast-and-accurate-sinecosine-approximation/
- ****************************************************************************/
-
-b16_t b16sin(b16_t rad)
-{
-  b16_t tmp1;
-  b16_t tmp2;
-  b16_t tmp3;
-
-  /* Force angle into the good range */
-
-  if (rad < -b16PI)
-    {
-      rad += b16TWOPI;
-    }
-  else if (rad > b16PI)
-   {
-      rad -= b16TWOPI;
-   }
-
-  /* tmp1 = 1.27323954 * rad
-   * tmp2 = .405284735 * rad * rad
-   */
-
-
-  tmp1 = b16mulb16(b16_1P27323954, rad);
-  tmp2 = b16mulb16(b16_P405284735, b16sqr(rad));
-
-  if (rad < 0)
-    {
-       /* tmp3 = 1.27323954 * rad + .405284735 * rad * rad */
-
-       tmp3 = tmp1 + tmp2;
-    }
-  else
-    {
-       /* tmp3 = 1.27323954 * rad - 0.405284735 * rad * rad */
-
-       tmp3 = tmp1 - tmp2;
-    }
-
-  /* tmp1 = tmp3*tmp3 */
-
-  tmp1 = b16sqr(tmp3);
-  if (tmp3 < 0)
-    {
-      /* tmp1 = tmp3 * -tmp3 */
-
-      tmp1 = -tmp1;
-    }
-
-  /* Return sin = .225 * (tmp3 * (+/-tmp3) - tmp3) + tmp3 */
-
-  return b16mulb16(b16_P225, (tmp1 - tmp3)) + tmp3;
-}