1 files changed, 0 insertions, 199 deletions
diff --git a/gnuradio-runtime/lib/gr_fast_atan2f.cc b/gnuradio-runtime/lib/gr_fast_atan2f.cc
deleted file mode 100644
index 8b7bfea12e..0000000000
--- a/gnuradio-runtime/lib/gr_fast_atan2f.cc
+++ /dev/null
@@ -1,199 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2005 Free Software Foundation, Inc.
- *
- * This file is part of GNU Radio
- *
- * GNU Radio is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3, or (at your option)
- * any later version.
- *
- * GNU Radio is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU Radio; see the file COPYING.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street,
- * Boston, MA 02110-1301, USA.
- */
-
-#include <gr_math.h>         // declaration is in here
-#include <cmath>
-
-#define REAL float
-
-/***************************************************************************/
-/* Constant definitions */
-/***************************************************************************/
-
-#define TAN_MAP_RES 0.003921569 /* (smallest non-zero value in table) */
-#define RAD_PER_DEG 0.017453293
-#define TAN_MAP_SIZE 256
-
-/* arctangents from 0 to pi/4 radians */
-static REAL
-fast_atan_table[257] = {
-   0.000000e+00, 3.921549e-03, 7.842976e-03, 1.176416e-02,
-   1.568499e-02, 1.960533e-02, 2.352507e-02, 2.744409e-02,
-   3.136226e-02, 3.527947e-02, 3.919560e-02, 4.311053e-02,
-   4.702413e-02, 5.093629e-02, 5.484690e-02, 5.875582e-02,
-   6.266295e-02, 6.656816e-02, 7.047134e-02, 7.437238e-02,
-   7.827114e-02, 8.216752e-02, 8.606141e-02, 8.995267e-02,
-   9.384121e-02, 9.772691e-02, 1.016096e-01, 1.054893e-01,
-   1.093658e-01, 1.132390e-01, 1.171087e-01, 1.209750e-01,
-   1.248376e-01, 1.286965e-01, 1.325515e-01, 1.364026e-01,
-   1.402496e-01, 1.440924e-01, 1.479310e-01, 1.517652e-01,
-   1.555948e-01, 1.594199e-01, 1.632403e-01, 1.670559e-01,
-   1.708665e-01, 1.746722e-01, 1.784728e-01, 1.822681e-01,
-   1.860582e-01, 1.898428e-01, 1.936220e-01, 1.973956e-01,
-   2.011634e-01, 2.049255e-01, 2.086818e-01, 2.124320e-01,
-   2.161762e-01, 2.199143e-01, 2.236461e-01, 2.273716e-01,
-   2.310907e-01, 2.348033e-01, 2.385093e-01, 2.422086e-01,
-   2.459012e-01, 2.495869e-01, 2.532658e-01, 2.569376e-01,
-   2.606024e-01, 2.642600e-01, 2.679104e-01, 2.715535e-01,
-   2.751892e-01, 2.788175e-01, 2.824383e-01, 2.860514e-01,
-   2.896569e-01, 2.932547e-01, 2.968447e-01, 3.004268e-01,
-   3.040009e-01, 3.075671e-01, 3.111252e-01, 3.146752e-01,
-   3.182170e-01, 3.217506e-01, 3.252758e-01, 3.287927e-01,
-   3.323012e-01, 3.358012e-01, 3.392926e-01, 3.427755e-01,
-   3.462497e-01, 3.497153e-01, 3.531721e-01, 3.566201e-01,
-   3.600593e-01, 3.634896e-01, 3.669110e-01, 3.703234e-01,
-   3.737268e-01, 3.771211e-01, 3.805064e-01, 3.838825e-01,
-   3.872494e-01, 3.906070e-01, 3.939555e-01, 3.972946e-01,
-   4.006244e-01, 4.039448e-01, 4.072558e-01, 4.105574e-01,
-   4.138496e-01, 4.171322e-01, 4.204054e-01, 4.236689e-01,
-   4.269229e-01, 4.301673e-01, 4.334021e-01, 4.366272e-01,
-   4.398426e-01, 4.430483e-01, 4.462443e-01, 4.494306e-01,
-   4.526070e-01, 4.557738e-01, 4.589307e-01, 4.620778e-01,
-   4.652150e-01, 4.683424e-01, 4.714600e-01, 4.745676e-01,
-   4.776654e-01, 4.807532e-01, 4.838312e-01, 4.868992e-01,
-   4.899573e-01, 4.930055e-01, 4.960437e-01, 4.990719e-01,
-   5.020902e-01, 5.050985e-01, 5.080968e-01, 5.110852e-01,
-   5.140636e-01, 5.170320e-01, 5.199904e-01, 5.229388e-01,
-   5.258772e-01, 5.288056e-01, 5.317241e-01, 5.346325e-01,
-   5.375310e-01, 5.404195e-01, 5.432980e-01, 5.461666e-01,
-   5.490251e-01, 5.518738e-01, 5.547124e-01, 5.575411e-01,
-   5.603599e-01, 5.631687e-01, 5.659676e-01, 5.687566e-01,
-   5.715357e-01, 5.743048e-01, 5.770641e-01, 5.798135e-01,
-   5.825531e-01, 5.852828e-01, 5.880026e-01, 5.907126e-01,
-   5.934128e-01, 5.961032e-01, 5.987839e-01, 6.014547e-01,
-   6.041158e-01, 6.067672e-01, 6.094088e-01, 6.120407e-01,
-   6.146630e-01, 6.172755e-01, 6.198784e-01, 6.224717e-01,
-   6.250554e-01, 6.276294e-01, 6.301939e-01, 6.327488e-01,
-   6.352942e-01, 6.378301e-01, 6.403565e-01, 6.428734e-01,
-   6.453808e-01, 6.478788e-01, 6.503674e-01, 6.528466e-01,
-   6.553165e-01, 6.577770e-01, 6.602282e-01, 6.626701e-01,
-   6.651027e-01, 6.675261e-01, 6.699402e-01, 6.723452e-01,
-   6.747409e-01, 6.771276e-01, 6.795051e-01, 6.818735e-01,
-   6.842328e-01, 6.865831e-01, 6.889244e-01, 6.912567e-01,
-   6.935800e-01, 6.958943e-01, 6.981998e-01, 7.004964e-01,
-   7.027841e-01, 7.050630e-01, 7.073330e-01, 7.095943e-01,
-   7.118469e-01, 7.140907e-01, 7.163258e-01, 7.185523e-01,
-   7.207701e-01, 7.229794e-01, 7.251800e-01, 7.273721e-01,
-   7.295557e-01, 7.317307e-01, 7.338974e-01, 7.360555e-01,
-   7.382053e-01, 7.403467e-01, 7.424797e-01, 7.446045e-01,
-   7.467209e-01, 7.488291e-01, 7.509291e-01, 7.530208e-01,
-   7.551044e-01, 7.571798e-01, 7.592472e-01, 7.613064e-01,
-   7.633576e-01, 7.654008e-01, 7.674360e-01, 7.694633e-01,
-   7.714826e-01, 7.734940e-01, 7.754975e-01, 7.774932e-01,
-   7.794811e-01, 7.814612e-01, 7.834335e-01, 7.853983e-01,
-   7.853983e-01
- };
-
-
-/*****************************************************************************
-Function: Arc tangent
-
-Syntax: angle = fast_atan2(y, x);
-REAL y y component of input vector
-REAL x x component of input vector
-REAL angle angle of vector (x, y) in radians
-
-Description: This function calculates the angle of the vector (x,y) based
-on a table lookup and linear interpolation. The table uses
-a 256 point table covering -45 to +45 degrees and uses
-symetry to determine the final angle value in the range of
--180 to 180 degrees. Note that this function uses the small
-angle approximation for values close to zero. This routine
-calculates the arc tangent with an average error of
-+/- 0.045 degrees.
-*****************************************************************************/
-
-REAL
-gr_fast_atan2f(REAL y, REAL x)
-{
-  REAL x_abs, y_abs, z;
-  REAL alpha, angle, base_angle;
-  int index;
-
-  /* don't divide by zero! */		// FIXME could get hosed with -0.0
-  if ((y == 0.0) && (x == 0.0))
-    return 0.0;
-
-  /* normalize to +/- 45 degree range */
-  y_abs = fabs(y);
-  x_abs = fabs(x);
-  //z = (y_abs < x_abs ? y_abs / x_abs : x_abs / y_abs);
-  if (y_abs < x_abs)
-    z = y_abs / x_abs;
-  else
-    z = x_abs / y_abs;
-
-  /* when ratio approaches the table resolution, the angle is */
-  /* best approximated with the argument itself... */
-  if (z < TAN_MAP_RES)
-    base_angle = z;
-  else {
-    /* find index and interpolation value */
-    alpha = z * (REAL) TAN_MAP_SIZE - .5;
-    index = (int) alpha;
-    alpha -= (REAL) index;
-    /* determine base angle based on quadrant and */
-    /* add or subtract table value from base angle based on quadrant */
-    base_angle = fast_atan_table[index];
-    base_angle +=
-      (fast_atan_table[index + 1] - fast_atan_table[index]) * alpha;
-  }
-
-  if (x_abs > y_abs) { /* -45 -> 45 or 135 -> 225 */
-    if (x >= 0.0) { /* -45 -> 45 */
-      if (y >= 0.0)
-	angle = base_angle; /* 0 -> 45, angle OK */
-      else
-	angle = -base_angle; /* -45 -> 0, angle = -angle */
-    } else { /* 135 -> 180 or 180 -> -135 */
-      angle = 3.14159265358979323846;
-      if (y >= 0.0)
-	angle -= base_angle; /* 135 -> 180, angle = 180 - angle */
-      else
-	angle = base_angle - angle; /* 180 -> -135, angle = angle - 180 */
-    }
-  } else { /* 45 -> 135 or -135 -> -45 */
-    if (y >= 0.0) { /* 45 -> 135 */
-      angle = 1.57079632679489661923;
-      if (x >= 0.0)
-	angle -= base_angle; /* 45 -> 90, angle = 90 - angle */
-      else
-	angle += base_angle; /* 90 -> 135, angle = 90 + angle */
-    } else { /* -135 -> -45 */
-      angle = -1.57079632679489661923;
-      if (x >= 0.0)
-	angle += base_angle; /* -90 -> -45, angle = -90 + angle */
-      else
-	angle -= base_angle; /* -135 -> -90, angle = -90 - angle */
-    }
-  }
-
-#ifdef ZERO_TO_TWOPI
-  if (angle < 0)
-    return (angle + TWOPI);
-  else
-    return (angle);
-#else
-  return (angle);
-#endif
-}
-