1 files changed, 0 insertions, 126 deletions
diff --git a/nuttx/lib/math/lib_exp.c b/nuttx/lib/math/lib_exp.c
deleted file mode 100644
index 1e3120453..000000000
--- a/nuttx/lib/math/lib_exp.c
+++ /dev/null
@@ -1,126 +0,0 @@
-/************************************************************************
- * lib/math/lib_exp.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 <sys/types.h>
-#include <math.h>
-
-#include "lib_internal.h"
-
-#ifdef CONFIG_HAVE_DOUBLE
-
-/************************************************************************
- * Private Data
- ************************************************************************/
-
-static double _dbl_inv_fact[] =
-{
-  1.0 / 1.0,                    // 1 / 0!
-  1.0 / 1.0,                    // 1 / 1!
-  1.0 / 2.0,                    // 1 / 2!
-  1.0 / 6.0,                    // 1 / 3!
-  1.0 / 24.0,                   // 1 / 4!
-  1.0 / 120.0,                  // 1 / 5!
-  1.0 / 720.0,                  // 1 / 6!
-  1.0 / 5040.0,                 // 1 / 7!
-  1.0 / 40320.0,                // 1 / 8!
-  1.0 / 362880.0,               // 1 / 9!
-  1.0 / 3628800.0,              // 1 / 10!
-  1.0 / 39916800.0,             // 1 / 11!
-  1.0 / 479001600.0,            // 1 / 12!
-  1.0 / 6227020800.0,           // 1 / 13!
-  1.0 / 87178291200.0,          // 1 / 14!
-  1.0 / 1307674368000.0,        // 1 / 15!
-  1.0 / 20922789888000.0,       // 1 / 16!
-  1.0 / 355687428096000.0,      // 1 / 17!
-  1.0 / 6402373705728000.0,     // 1 / 18!
-};
-
-/************************************************************************
- * Public Functions
- ************************************************************************/
-
-double exp(double x)
-{
-  size_t int_part;
-  bool invert;
-  double value;
-  double x0;
-  size_t i;
-
-  if (x == 0)
-    {
-      return 1;
-    }
-  else if (x < 0)
-    {
-      invert = true;
-      x = -x;
-    }
-  else
-    {
-      invert = false;
-    }
-
-  /* Extract integer component */
-
-  int_part = (size_t) x;
-
-  /* Set x to fractional component */
-
-  x -= (double)int_part;
-
-  /* Perform Taylor series approximation with nineteen terms */
-
-  value = 0.0;
-  x0 = 1.0;
-  for (i = 0; i < 19; i++)
-    {
-      value += x0 * _dbl_inv_fact[i];
-      x0 *= x;
-    }
-
-  /* Multiply by exp of the integer component */
-
-  value *= lib_expi(int_part);
-
-  if (invert)
-    {
-      return (1.0 / value);
-    }
-  else
-    {
-      return value;
-    }
-}
-#endif