1 files changed, 0 insertions, 99 deletions
diff --git a/nuttx/lib/math/lib_sqrt.c b/nuttx/lib/math/lib_sqrt.c
deleted file mode 100644
index d77997f7c..000000000
--- a/nuttx/lib/math/lib_sqrt.c
+++ /dev/null
@@ -1,99 +0,0 @@
-/************************************************************************
- * lib/math/lib_sqrt.c
- *
- * This file is a part of NuttX:
- *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
- *   Ported by: Darcy Gong
- *
- * It derives from the Rhombs OS math library by Nick Johnson which has
- * a compatibile, MIT-style license:
- *
- * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com>
- * 
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- * 
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- ************************************************************************/
-
-/************************************************************************
- * Included Files
- ************************************************************************/
-
-#include <nuttx/config.h>
-#include <nuttx/compiler.h>
-
-#include <math.h>
-#include <errno.h>
-
-#include "lib_internal.h"
-
-/************************************************************************
- * Public Functions
- ************************************************************************/
-
-#ifdef CONFIG_HAVE_DOUBLE
-double sqrt(double x)
-{
-  long double y, y1;
-
-  if (x < 0.0)
-    {
-      errno = EDOM;
-      return NAN;
-    }
-
-  if (isnan(x))
-    {
-      return NAN;
-    }
-
-  if (isinf(x))
-    {
-      return INFINITY;
-    }
-
-  if (x == 0.0)
-    {
-      return 0.0;
-    }
-
-  /* Guess square root (using bit manipulation) */
-
-  y = lib_sqrtapprox(x);
-
-  /* Perform four iterations of approximation.  This number (4) is
-   * definitely optimal
-   */
-
-  y = 0.5 * (y + x / y);
-  y = 0.5 * (y + x / y);
-  y = 0.5 * (y + x / y);
-  y = 0.5 * (y + x / y);
-
-  /* If guess was terribe (out of range of float).  Repeat approximation
-   * until convergence.
-   */
-
-  if (y * y < x - 1.0 || y * y > x + 1.0)
-    {
-      y1 = -1.0;
-      while (y != y1)
-        {
-          y1 = y;
-          y = 0.5 * (y + x / y);
-        }
-    }
-
-  return y;
-}
-#endif