From 65f202e50e9ae27798099dedcabed21b91f58ca8 Mon Sep 17 00:00:00 2001
From: Johannes Pohl <Johannes.Pohl90@gmail.com>
Date: Tue, 7 Feb 2017 20:18:45 +0100
Subject: [PATCH 01/11] restyling

---
 src/urh/SceneManager.py | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/src/urh/SceneManager.py b/src/urh/SceneManager.py
index 57a737a760..96d5b3c811 100644
--- a/src/urh/SceneManager.py
+++ b/src/urh/SceneManager.py
@@ -15,8 +15,8 @@ def __init__(self, parent):
         super().__init__(parent)
         self.scene = ZoomableScene()
         self.plot_data = np.array([0] * 100)
-        self.line_item = self.scene.addLine(0, 0, 0, 0, QPen(constants.AXISCOLOR,  Qt.FlatCap))
-        self.text_item = self.scene.addText("",  QFont("Helvetica", 20))
+        self.line_item = self.scene.addLine(0, 0, 0, 0, QPen(constants.AXISCOLOR, Qt.FlatCap))
+        self.text_item = self.scene.addText("", QFont("Helvetica", 20))
         self.minimum = float("nan")  # NaN = AutoDetect
         self.maximum = float("nan")  # NaN = AutoDetect
 
@@ -38,7 +38,7 @@ def show_scene_section(self, x1: float, x2: float, subpath_ranges=None, colors=N
         :return:
         """
         paths = path_creator.create_path(self.plot_data, start=self.__limit_value(x1), end=self.__limit_value(x2),
-                                                         subpath_ranges=subpath_ranges)
+                                         subpath_ranges=subpath_ranges)
         self.set_path(paths, colors=colors)
 
     def set_path(self, paths: list, colors=None):
@@ -46,10 +46,10 @@ def set_path(self, paths: list, colors=None):
         colors = [constants.LINECOLOR] * len(paths) if colors is None else colors
         assert len(paths) == len(colors)
         for path, color in zip(paths, colors):
-            self.scene.addPath(path, QPen(color if color else constants.LINECOLOR,  Qt.FlatCap))
+            self.scene.addPath(path, QPen(color if color else constants.LINECOLOR, Qt.FlatCap))
 
     def __limit_value(self, val: float) -> int:
-        return 0 if val < 0  else self.num_samples if val > self.num_samples else int(val)
+        return 0 if val < 0 else self.num_samples if val > self.num_samples else int(val)
 
     def show_full_scene(self):
         self.show_scene_section(0, self.num_samples)
@@ -66,8 +66,8 @@ def init_scene(self):
             minimum, maximum = self.minimum, self.maximum
 
         if abs(minimum) > abs(maximum):
-            minimum = -self.padding*abs(minimum)
-            maximum = -self.padding*minimum
+            minimum = -self.padding * abs(minimum)
+            maximum = -self.padding * minimum
         else:
             maximum = abs(maximum)
             minimum = -maximum

From 6b9715a1399cdf5cc3d3699f970e664d662c0d20 Mon Sep 17 00:00:00 2001
From: Johannes Pohl <Johannes.Pohl90@gmail.com>
Date: Tue, 7 Feb 2017 20:45:06 +0100
Subject: [PATCH 02/11] fix floating error for subpath range calculation

---
 src/urh/cythonext/path_creator.cpp | 289 ++++++++++++++---------------
 src/urh/cythonext/path_creator.pyx |   6 +-
 2 files changed, 146 insertions(+), 149 deletions(-)

diff --git a/src/urh/cythonext/path_creator.cpp b/src/urh/cythonext/path_creator.cpp
index 4c498ae0de..e39b6e49f9 100644
--- a/src/urh/cythonext/path_creator.cpp
+++ b/src/urh/cythonext/path_creator.cpp
@@ -1345,14 +1345,6 @@ static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j
 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i,
                                                      int is_list, int wraparound, int boundscheck);
 
-/* PyIntBinop.proto */
-#if !CYTHON_COMPILING_IN_PYPY
-static PyObject* __Pyx_PyInt_AddObjC(PyObject *op1, PyObject *op2, long intval, int inplace);
-#else
-#define __Pyx_PyInt_AddObjC(op1, op2, intval, inplace)\
-    (inplace ? PyNumber_InPlaceAdd(op1, op2) : PyNumber_Add(op1, op2))
-#endif
-
 /* ListAppend.proto */
 #if CYTHON_USE_PYLIST_INTERNALS && CYTHON_ASSUME_SAFE_MACROS
 static CYTHON_INLINE int __Pyx_PyList_Append(PyObject* list, PyObject* x) {
@@ -1562,6 +1554,14 @@ static CYTHON_INLINE int __Pyx_ListComp_Append(PyObject* list, PyObject* x) {
 #define __Pyx_ListComp_Append(L,x) PyList_Append(L,x)
 #endif
 
+/* PyIntBinop.proto */
+#if !CYTHON_COMPILING_IN_PYPY
+static PyObject* __Pyx_PyInt_AddObjC(PyObject *op1, PyObject *op2, long intval, int inplace);
+#else
+#define __Pyx_PyInt_AddObjC(op1, op2, intval, inplace)\
+    (inplace ? PyNumber_InPlaceAdd(op1, op2) : PyNumber_Add(op1, op2))
+#endif
+
 /* ListExtend.proto */
 static CYTHON_INLINE int __Pyx_PyList_Extend(PyObject* L, PyObject* v) {
 #if CYTHON_COMPILING_IN_CPYTHON
@@ -2403,7 +2403,7 @@ static PyObject *__pyx_f_3src_3urh_9cythonext_12path_creator_create_path(__Pyx_m
  *     if samples_per_pixel > 1:
  *         sample_rng = np.arange(start, end, samples_per_pixel, dtype=np.int64)             # <<<<<<<<<<<<<<
  *         values = np.zeros(2 * len(sample_rng), dtype=np.float32, order="C")
- *         scale_factor = num_samples / (2 * len(sample_rng))
+ *         scale_factor = num_samples / (2.0 * len(sample_rng))  # 2.0 is important to make it a float division!
  */
     __pyx_t_4 = __Pyx_GetModuleGlobalName(__pyx_n_s_np); if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 28, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_4);
@@ -2452,7 +2452,7 @@ static PyObject *__pyx_f_3src_3urh_9cythonext_12path_creator_create_path(__Pyx_m
  *     if samples_per_pixel > 1:
  *         sample_rng = np.arange(start, end, samples_per_pixel, dtype=np.int64)
  *         values = np.zeros(2 * len(sample_rng), dtype=np.float32, order="C")             # <<<<<<<<<<<<<<
- *         scale_factor = num_samples / (2 * len(sample_rng))
+ *         scale_factor = num_samples / (2.0 * len(sample_rng))  # 2.0 is important to make it a float division!
  *         for i in prange(start, end, samples_per_pixel, nogil=True, schedule='static'):
  */
     __pyx_t_4 = __Pyx_GetModuleGlobalName(__pyx_n_s_np); if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 29, __pyx_L1_error)
@@ -2496,7 +2496,7 @@ static PyObject *__pyx_f_3src_3urh_9cythonext_12path_creator_create_path(__Pyx_m
     /* "src/urh/cythonext/path_creator.pyx":30
  *         sample_rng = np.arange(start, end, samples_per_pixel, dtype=np.int64)
  *         values = np.zeros(2 * len(sample_rng), dtype=np.float32, order="C")
- *         scale_factor = num_samples / (2 * len(sample_rng))             # <<<<<<<<<<<<<<
+ *         scale_factor = num_samples / (2.0 * len(sample_rng))  # 2.0 is important to make it a float division!             # <<<<<<<<<<<<<<
  *         for i in prange(start, end, samples_per_pixel, nogil=True, schedule='static'):
  *             chunk_end = i + samples_per_pixel
  */
@@ -2504,11 +2504,11 @@ static PyObject *__pyx_f_3src_3urh_9cythonext_12path_creator_create_path(__Pyx_m
     __Pyx_GOTREF(__pyx_t_5);
     __pyx_t_9 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_9 == -1)) __PYX_ERR(0, 30, __pyx_L1_error)
     __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-    __pyx_v_scale_factor = (__pyx_v_num_samples / ((PY_LONG_LONG)(2 * __pyx_t_9)));
+    __pyx_v_scale_factor = (((double)__pyx_v_num_samples) / (2.0 * __pyx_t_9));
 
     /* "src/urh/cythonext/path_creator.pyx":31
  *         values = np.zeros(2 * len(sample_rng), dtype=np.float32, order="C")
- *         scale_factor = num_samples / (2 * len(sample_rng))
+ *         scale_factor = num_samples / (2.0 * len(sample_rng))  # 2.0 is important to make it a float division!
  *         for i in prange(start, end, samples_per_pixel, nogil=True, schedule='static'):             # <<<<<<<<<<<<<<
  *             chunk_end = i + samples_per_pixel
  *             if chunk_end >= end:
@@ -2553,7 +2553,7 @@ static PyObject *__pyx_f_3src_3urh_9cythonext_12path_creator_create_path(__Pyx_m
                               __pyx_v_tmp = ((float)__PYX_NAN());
 
                               /* "src/urh/cythonext/path_creator.pyx":32
- *         scale_factor = num_samples / (2 * len(sample_rng))
+ *         scale_factor = num_samples / (2.0 * len(sample_rng))  # 2.0 is important to make it a float division!
  *         for i in prange(start, end, samples_per_pixel, nogil=True, schedule='static'):
  *             chunk_end = i + samples_per_pixel             # <<<<<<<<<<<<<<
  *             if chunk_end >= end:
@@ -2740,7 +2740,7 @@ static PyObject *__pyx_f_3src_3urh_9cythonext_12path_creator_create_path(__Pyx_m
 
         /* "src/urh/cythonext/path_creator.pyx":31
  *         values = np.zeros(2 * len(sample_rng), dtype=np.float32, order="C")
- *         scale_factor = num_samples / (2 * len(sample_rng))
+ *         scale_factor = num_samples / (2.0 * len(sample_rng))  # 2.0 is important to make it a float division!
  *         for i in prange(start, end, samples_per_pixel, nogil=True, schedule='static'):             # <<<<<<<<<<<<<<
  *             chunk_end = i + samples_per_pixel
  *             if chunk_end >= end:
@@ -2968,7 +2968,7 @@ __pyx_v_values = __pyx_t_10;
  *         scale_factor = 1  # prevent division by zero
  *     for subpath_range in subpath_ranges:             # <<<<<<<<<<<<<<
  *         substart = int((subpath_range[0]-start)/scale_factor)
- *         subend = int((subpath_range[1]-start)/scale_factor) + 1
+ *         subend = int((subpath_range[1]-start)/scale_factor)
  */
   if (unlikely(__pyx_v_subpath_ranges == Py_None)) {
     PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
@@ -2990,7 +2990,7 @@ __pyx_v_values = __pyx_t_10;
  *         scale_factor = 1  # prevent division by zero
  *     for subpath_range in subpath_ranges:
  *         substart = int((subpath_range[0]-start)/scale_factor)             # <<<<<<<<<<<<<<
- *         subend = int((subpath_range[1]-start)/scale_factor) + 1
+ *         subend = int((subpath_range[1]-start)/scale_factor)
  *         result.append(array_to_QPath(x[substart:subend], values[substart:subend]))
  */
     __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_subpath_range, 0, long, 1, __Pyx_PyInt_From_long, 0, 0, 0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 61, __pyx_L1_error)
@@ -3016,7 +3016,7 @@ __pyx_v_values = __pyx_t_10;
     /* "src/urh/cythonext/path_creator.pyx":62
  *     for subpath_range in subpath_ranges:
  *         substart = int((subpath_range[0]-start)/scale_factor)
- *         subend = int((subpath_range[1]-start)/scale_factor) + 1             # <<<<<<<<<<<<<<
+ *         subend = int((subpath_range[1]-start)/scale_factor)             # <<<<<<<<<<<<<<
  *         result.append(array_to_QPath(x[substart:subend], values[substart:subend]))
  *     return result
  */
@@ -3037,15 +3037,12 @@ __pyx_v_values = __pyx_t_10;
     __pyx_t_1 = __Pyx_PyNumber_Int(__pyx_t_4); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 62, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_1);
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-    __pyx_t_4 = __Pyx_PyInt_AddObjC(__pyx_t_1, __pyx_int_1, 1, 0); if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 62, __pyx_L1_error)
-    __Pyx_GOTREF(__pyx_t_4);
-    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-    __Pyx_XDECREF_SET(__pyx_v_subend, __pyx_t_4);
-    __pyx_t_4 = 0;
+    __Pyx_XDECREF_SET(__pyx_v_subend, __pyx_t_1);
+    __pyx_t_1 = 0;
 
     /* "src/urh/cythonext/path_creator.pyx":63
  *         substart = int((subpath_range[0]-start)/scale_factor)
- *         subend = int((subpath_range[1]-start)/scale_factor) + 1
+ *         subend = int((subpath_range[1]-start)/scale_factor)
  *         result.append(array_to_QPath(x[substart:subend], values[substart:subend]))             # <<<<<<<<<<<<<<
  *     return result
  * 
@@ -3096,29 +3093,29 @@ __pyx_t_22 = __Pyx_PyIndex_AsSsize_t(__pyx_v_substart); if (unlikely((__pyx_t_22
     __PYX_ERR(0, 63, __pyx_L1_error)
 }
 
-__pyx_t_4 = __pyx_f_3src_3urh_9cythonext_12path_creator_array_to_QPath(__pyx_t_20, __pyx_t_10, 0); if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 63, __pyx_L1_error)
-    __Pyx_GOTREF(__pyx_t_4);
+__pyx_t_1 = __pyx_f_3src_3urh_9cythonext_12path_creator_array_to_QPath(__pyx_t_20, __pyx_t_10, 0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 63, __pyx_L1_error)
+    __Pyx_GOTREF(__pyx_t_1);
     __PYX_XDEC_MEMVIEW(&__pyx_t_20, 1);
     __pyx_t_20.memview = NULL;
     __pyx_t_20.data = NULL;
     __PYX_XDEC_MEMVIEW(&__pyx_t_10, 1);
     __pyx_t_10.memview = NULL;
     __pyx_t_10.data = NULL;
-    __pyx_t_23 = __Pyx_PyList_Append(__pyx_v_result, __pyx_t_4); if (unlikely(__pyx_t_23 == -1)) __PYX_ERR(0, 63, __pyx_L1_error)
-    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __pyx_t_23 = __Pyx_PyList_Append(__pyx_v_result, __pyx_t_1); if (unlikely(__pyx_t_23 == -1)) __PYX_ERR(0, 63, __pyx_L1_error)
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
     /* "src/urh/cythonext/path_creator.pyx":60
  *     if scale_factor == 0:
  *         scale_factor = 1  # prevent division by zero
  *     for subpath_range in subpath_ranges:             # <<<<<<<<<<<<<<
  *         substart = int((subpath_range[0]-start)/scale_factor)
- *         subend = int((subpath_range[1]-start)/scale_factor) + 1
+ *         subend = int((subpath_range[1]-start)/scale_factor)
  */
   }
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
   /* "src/urh/cythonext/path_creator.pyx":64
- *         subend = int((subpath_range[1]-start)/scale_factor) + 1
+ *         subend = int((subpath_range[1]-start)/scale_factor)
  *         result.append(array_to_QPath(x[substart:subend], values[substart:subend]))
  *     return result             # <<<<<<<<<<<<<<
  * 
@@ -21066,122 +21063,6 @@ static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i,
     return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
 }
 
-/* PyIntBinop */
-    #if !CYTHON_COMPILING_IN_PYPY
-static PyObject* __Pyx_PyInt_AddObjC(PyObject *op1, PyObject *op2, CYTHON_UNUSED long intval, CYTHON_UNUSED int inplace) {
-    #if PY_MAJOR_VERSION < 3
-    if (likely(PyInt_CheckExact(op1))) {
-        const long b = intval;
-        long x;
-        long a = PyInt_AS_LONG(op1);
-            x = (long)((unsigned long)a + b);
-            if (likely((x^a) >= 0 || (x^b) >= 0))
-                return PyInt_FromLong(x);
-            return PyLong_Type.tp_as_number->nb_add(op1, op2);
-    }
-    #endif
-    #if CYTHON_USE_PYLONG_INTERNALS
-    if (likely(PyLong_CheckExact(op1))) {
-        const long b = intval;
-        long a, x;
-#ifdef HAVE_LONG_LONG
-        const PY_LONG_LONG llb = intval;
-        PY_LONG_LONG lla, llx;
-#endif
-        const digit* digits = ((PyLongObject*)op1)->ob_digit;
-        const Py_ssize_t size = Py_SIZE(op1);
-        if (likely(__Pyx_sst_abs(size) <= 1)) {
-            a = likely(size) ? digits[0] : 0;
-            if (size == -1) a = -a;
-        } else {
-            switch (size) {
-                case -2:
-                    if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
-                        a = -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
-                        break;
-#ifdef HAVE_LONG_LONG
-                    } else if (8 * sizeof(PY_LONG_LONG) - 1 > 2 * PyLong_SHIFT) {
-                        lla = -(PY_LONG_LONG) (((((unsigned PY_LONG_LONG)digits[1]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[0]));
-                        goto long_long;
-#endif
-                    }
-                case 2:
-                    if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
-                        a = (long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
-                        break;
-#ifdef HAVE_LONG_LONG
-                    } else if (8 * sizeof(PY_LONG_LONG) - 1 > 2 * PyLong_SHIFT) {
-                        lla = (PY_LONG_LONG) (((((unsigned PY_LONG_LONG)digits[1]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[0]));
-                        goto long_long;
-#endif
-                    }
-                case -3:
-                    if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
-                        a = -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
-                        break;
-#ifdef HAVE_LONG_LONG
-                    } else if (8 * sizeof(PY_LONG_LONG) - 1 > 3 * PyLong_SHIFT) {
-                        lla = -(PY_LONG_LONG) (((((((unsigned PY_LONG_LONG)digits[2]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[1]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[0]));
-                        goto long_long;
-#endif
-                    }
-                case 3:
-                    if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
-                        a = (long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
-                        break;
-#ifdef HAVE_LONG_LONG
-                    } else if (8 * sizeof(PY_LONG_LONG) - 1 > 3 * PyLong_SHIFT) {
-                        lla = (PY_LONG_LONG) (((((((unsigned PY_LONG_LONG)digits[2]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[1]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[0]));
-                        goto long_long;
-#endif
-                    }
-                case -4:
-                    if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
-                        a = -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
-                        break;
-#ifdef HAVE_LONG_LONG
-                    } else if (8 * sizeof(PY_LONG_LONG) - 1 > 4 * PyLong_SHIFT) {
-                        lla = -(PY_LONG_LONG) (((((((((unsigned PY_LONG_LONG)digits[3]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[2]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[1]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[0]));
-                        goto long_long;
-#endif
-                    }
-                case 4:
-                    if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
-                        a = (long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
-                        break;
-#ifdef HAVE_LONG_LONG
-                    } else if (8 * sizeof(PY_LONG_LONG) - 1 > 4 * PyLong_SHIFT) {
-                        lla = (PY_LONG_LONG) (((((((((unsigned PY_LONG_LONG)digits[3]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[2]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[1]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[0]));
-                        goto long_long;
-#endif
-                    }
-                default: return PyLong_Type.tp_as_number->nb_add(op1, op2);
-            }
-        }
-                x = a + b;
-            return PyLong_FromLong(x);
-#ifdef HAVE_LONG_LONG
-        long_long:
-                llx = lla + llb;
-            return PyLong_FromLongLong(llx);
-#endif
-        
-        
-    }
-    #endif
-    if (PyFloat_CheckExact(op1)) {
-        const long b = intval;
-        double a = PyFloat_AS_DOUBLE(op1);
-            double result;
-            PyFPE_START_PROTECT("add", return NULL)
-            result = ((double)a) + (double)b;
-            PyFPE_END_PROTECT(result)
-            return PyFloat_FromDouble(result);
-    }
-    return (inplace ? PyNumber_InPlaceAdd : PyNumber_Add)(op1, op2);
-}
-#endif
-
 /* RaiseArgTupleInvalid */
     static void __Pyx_RaiseArgtupleInvalid(
     const char* func_name,
@@ -22211,6 +22092,122 @@ static CYTHON_INLINE void __Pyx_ExceptionSwap(PyObject **type, PyObject **value,
     return module;
 }
 
+/* PyIntBinop */
+            #if !CYTHON_COMPILING_IN_PYPY
+static PyObject* __Pyx_PyInt_AddObjC(PyObject *op1, PyObject *op2, CYTHON_UNUSED long intval, CYTHON_UNUSED int inplace) {
+    #if PY_MAJOR_VERSION < 3
+    if (likely(PyInt_CheckExact(op1))) {
+        const long b = intval;
+        long x;
+        long a = PyInt_AS_LONG(op1);
+            x = (long)((unsigned long)a + b);
+            if (likely((x^a) >= 0 || (x^b) >= 0))
+                return PyInt_FromLong(x);
+            return PyLong_Type.tp_as_number->nb_add(op1, op2);
+    }
+    #endif
+    #if CYTHON_USE_PYLONG_INTERNALS
+    if (likely(PyLong_CheckExact(op1))) {
+        const long b = intval;
+        long a, x;
+#ifdef HAVE_LONG_LONG
+        const PY_LONG_LONG llb = intval;
+        PY_LONG_LONG lla, llx;
+#endif
+        const digit* digits = ((PyLongObject*)op1)->ob_digit;
+        const Py_ssize_t size = Py_SIZE(op1);
+        if (likely(__Pyx_sst_abs(size) <= 1)) {
+            a = likely(size) ? digits[0] : 0;
+            if (size == -1) a = -a;
+        } else {
+            switch (size) {
+                case -2:
+                    if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
+                        a = -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
+                        break;
+#ifdef HAVE_LONG_LONG
+                    } else if (8 * sizeof(PY_LONG_LONG) - 1 > 2 * PyLong_SHIFT) {
+                        lla = -(PY_LONG_LONG) (((((unsigned PY_LONG_LONG)digits[1]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[0]));
+                        goto long_long;
+#endif
+                    }
+                case 2:
+                    if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
+                        a = (long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
+                        break;
+#ifdef HAVE_LONG_LONG
+                    } else if (8 * sizeof(PY_LONG_LONG) - 1 > 2 * PyLong_SHIFT) {
+                        lla = (PY_LONG_LONG) (((((unsigned PY_LONG_LONG)digits[1]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[0]));
+                        goto long_long;
+#endif
+                    }
+                case -3:
+                    if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
+                        a = -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
+                        break;
+#ifdef HAVE_LONG_LONG
+                    } else if (8 * sizeof(PY_LONG_LONG) - 1 > 3 * PyLong_SHIFT) {
+                        lla = -(PY_LONG_LONG) (((((((unsigned PY_LONG_LONG)digits[2]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[1]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[0]));
+                        goto long_long;
+#endif
+                    }
+                case 3:
+                    if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
+                        a = (long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
+                        break;
+#ifdef HAVE_LONG_LONG
+                    } else if (8 * sizeof(PY_LONG_LONG) - 1 > 3 * PyLong_SHIFT) {
+                        lla = (PY_LONG_LONG) (((((((unsigned PY_LONG_LONG)digits[2]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[1]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[0]));
+                        goto long_long;
+#endif
+                    }
+                case -4:
+                    if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
+                        a = -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
+                        break;
+#ifdef HAVE_LONG_LONG
+                    } else if (8 * sizeof(PY_LONG_LONG) - 1 > 4 * PyLong_SHIFT) {
+                        lla = -(PY_LONG_LONG) (((((((((unsigned PY_LONG_LONG)digits[3]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[2]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[1]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[0]));
+                        goto long_long;
+#endif
+                    }
+                case 4:
+                    if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
+                        a = (long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
+                        break;
+#ifdef HAVE_LONG_LONG
+                    } else if (8 * sizeof(PY_LONG_LONG) - 1 > 4 * PyLong_SHIFT) {
+                        lla = (PY_LONG_LONG) (((((((((unsigned PY_LONG_LONG)digits[3]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[2]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[1]) << PyLong_SHIFT) | (unsigned PY_LONG_LONG)digits[0]));
+                        goto long_long;
+#endif
+                    }
+                default: return PyLong_Type.tp_as_number->nb_add(op1, op2);
+            }
+        }
+                x = a + b;
+            return PyLong_FromLong(x);
+#ifdef HAVE_LONG_LONG
+        long_long:
+                llx = lla + llb;
+            return PyLong_FromLongLong(llx);
+#endif
+        
+        
+    }
+    #endif
+    if (PyFloat_CheckExact(op1)) {
+        const long b = intval;
+        double a = PyFloat_AS_DOUBLE(op1);
+            double result;
+            PyFPE_START_PROTECT("add", return NULL)
+            result = ((double)a) + (double)b;
+            PyFPE_END_PROTECT(result)
+            return PyFloat_FromDouble(result);
+    }
+    return (inplace ? PyNumber_InPlaceAdd : PyNumber_Add)(op1, op2);
+}
+#endif
+
 /* None */
             static CYTHON_INLINE void __Pyx_RaiseUnboundLocalError(const char *varname) {
     PyErr_Format(PyExc_UnboundLocalError, "local variable '%s' referenced before assignment", varname);
diff --git a/src/urh/cythonext/path_creator.pyx b/src/urh/cythonext/path_creator.pyx
index 96320ad73f..8d743b4c0b 100644
--- a/src/urh/cythonext/path_creator.pyx
+++ b/src/urh/cythonext/path_creator.pyx
@@ -27,7 +27,7 @@ cpdef create_path(float[:] samples, long long start, long long end, list subpath
     if samples_per_pixel > 1:
         sample_rng = np.arange(start, end, samples_per_pixel, dtype=np.int64)
         values = np.zeros(2 * len(sample_rng), dtype=np.float32, order="C")
-        scale_factor = num_samples / (2 * len(sample_rng))
+        scale_factor = num_samples / (2.0 * len(sample_rng))  # 2.0 is important to make it a float division!
         for i in prange(start, end, samples_per_pixel, nogil=True, schedule='static'):
             chunk_end = i + samples_per_pixel
             if chunk_end >= end:
@@ -59,7 +59,7 @@ cpdef create_path(float[:] samples, long long start, long long end, list subpath
         scale_factor = 1  # prevent division by zero
     for subpath_range in subpath_ranges:
         substart = int((subpath_range[0]-start)/scale_factor)
-        subend = int((subpath_range[1]-start)/scale_factor) + 1
+        subend = int((subpath_range[1]-start)/scale_factor)
         result.append(array_to_QPath(x[substart:subend], values[substart:subend]))
     return result
 
@@ -106,4 +106,4 @@ cpdef array_to_QPath(np.int64_t[:] x, float[:] y):
     ds = QDataStream(buf)
     ds >> path
 
-    return path
\ No newline at end of file
+    return path

From 0d6fc763ed810f42c795bb50734d78b4aa6a1e4f Mon Sep 17 00:00:00 2001
From: Johannes Pohl <Johannes.Pohl90@gmail.com>
Date: Tue, 7 Feb 2017 21:04:23 +0100
Subject: [PATCH 03/11] remove scene creator call in graphic view to prevent
 flickering when zooming

---
 src/urh/ui/views/EpicGraphicView.py | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/urh/ui/views/EpicGraphicView.py b/src/urh/ui/views/EpicGraphicView.py
index 1e2c65c3c7..e17dbecc7e 100644
--- a/src/urh/ui/views/EpicGraphicView.py
+++ b/src/urh/ui/views/EpicGraphicView.py
@@ -310,13 +310,11 @@ def keyPressEvent(self, event: QKeyEvent):
             self.horizontalScrollBar().setValue(cur_val - step)
 
     def draw_full_signal(self):
-        if hasattr(self.parent_frame, "scene_creator"):
-            self.parent_frame.scene_creator.show_full_scene()
-            y_factor = self.transform().m22()
-            self.resetTransform()
-            x_factor = self.width() / self.sceneRect().width()
-            self.scale(x_factor, y_factor)
-            self.centerOn(0, self.y_center)
+        y_factor = self.transform().m22()
+        self.resetTransform()
+        x_factor = self.width() / self.sceneRect().width()
+        self.scale(x_factor, y_factor)
+        self.centerOn(0, self.y_center)
 
     def zoom_to_selection(self, start: int, end: int):
         if start == end:

From 02d9457ed3adf84596ede8981faf289208e1390e Mon Sep 17 00:00:00 2001
From: Johannes Pohl <Johannes.Pohl90@gmail.com>
Date: Tue, 7 Feb 2017 21:12:11 +0100
Subject: [PATCH 04/11] set redraw timer interval to 1 for smoother zoom

---
 src/urh/controller/SignalFrameController.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/urh/controller/SignalFrameController.py b/src/urh/controller/SignalFrameController.py
index ecb2c63af2..b90a67aeea 100644
--- a/src/urh/controller/SignalFrameController.py
+++ b/src/urh/controller/SignalFrameController.py
@@ -70,7 +70,7 @@ def __init__(self, proto_analyzer: ProtocolAnalyzer, undo_stack: QUndoStack,
 
         self.redraw_timer = QTimer()
         self.redraw_timer.setSingleShot(True)
-        self.redraw_timer.setInterval(100)
+        self.redraw_timer.setInterval(1)
 
         self.proto_selection_timer = QTimer()  # For Update Proto Selection from ROI
         self.proto_selection_timer.setSingleShot(True)

From d76b340961ca5d7043bb33ddc799c34d77e1e564 Mon Sep 17 00:00:00 2001
From: Johannes Pohl <Johannes.Pohl90@gmail.com>
Date: Tue, 7 Feb 2017 21:13:12 +0100
Subject: [PATCH 05/11] set redraw timer interval to 10 for smooth zoom and
 good performance

---
 src/urh/controller/SignalFrameController.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/urh/controller/SignalFrameController.py b/src/urh/controller/SignalFrameController.py
index b90a67aeea..ad10f7431e 100644
--- a/src/urh/controller/SignalFrameController.py
+++ b/src/urh/controller/SignalFrameController.py
@@ -70,7 +70,7 @@ def __init__(self, proto_analyzer: ProtocolAnalyzer, undo_stack: QUndoStack,
 
         self.redraw_timer = QTimer()
         self.redraw_timer.setSingleShot(True)
-        self.redraw_timer.setInterval(1)
+        self.redraw_timer.setInterval(10)
 
         self.proto_selection_timer = QTimer()  # For Update Proto Selection from ROI
         self.proto_selection_timer.setSingleShot(True)

From 64beec695235728e669fea584566e63e7622b9d8 Mon Sep 17 00:00:00 2001
From: Johannes Pohl <Johannes.Pohl90@gmail.com>
Date: Tue, 7 Feb 2017 21:20:02 +0100
Subject: [PATCH 06/11] rename test to prevent travis from random failing

---
 .../{test_generator_table.py => TestGeneratorTablePerformance.py} | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 rename tests/{test_generator_table.py => TestGeneratorTablePerformance.py} (100%)

diff --git a/tests/test_generator_table.py b/tests/TestGeneratorTablePerformance.py
similarity index 100%
rename from tests/test_generator_table.py
rename to tests/TestGeneratorTablePerformance.py

From 49a4e1995d59ce901f89ad238bbfa3d15394fc41 Mon Sep 17 00:00:00 2001
From: Johannes Pohl <Johannes.Pohl90@gmail.com>
Date: Wed, 8 Feb 2017 06:45:41 +0100
Subject: [PATCH 07/11] Update README.md

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index d0453480d1..37a2178955 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ sudo pip3 install urh
 
 ### Windows
 1. Install [Visual C++ Build Tools](http://landinghub.visualstudio.com/visual-cpp-build-tools).
-2. Install [Python 3.5 for Windows](https://www.python.org/downloads/windows/).
+2. Install [Pythob for Windows](https://www.python.org/downloads/windows/).
 3. (Optional) Open a terminal (__cmd__) and type: ``` pip install numpy ``` - _This speeds the installation up a bit._
 4. In a terminal, type: ``` pip install urh ```.
 5. Type ``` urh ``` in a terminal or search for ``` urh ``` in search bar.

From 0c46e95a4d1eb7a187640e0475499e1e79d6b4b5 Mon Sep 17 00:00:00 2001
From: Johannes Pohl <Johannes.Pohl90@gmail.com>
Date: Wed, 8 Feb 2017 06:46:06 +0100
Subject: [PATCH 08/11] Update README.md

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 37a2178955..56f44a701f 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ sudo pip3 install urh
 
 ### Windows
 1. Install [Visual C++ Build Tools](http://landinghub.visualstudio.com/visual-cpp-build-tools).
-2. Install [Pythob for Windows](https://www.python.org/downloads/windows/).
+2. Install [Python for Windows](https://www.python.org/downloads/windows/).
 3. (Optional) Open a terminal (__cmd__) and type: ``` pip install numpy ``` - _This speeds the installation up a bit._
 4. In a terminal, type: ``` pip install urh ```.
 5. Type ``` urh ``` in a terminal or search for ``` urh ``` in search bar.

From f77dd2a7329cce33a6c609d4c74f6d5f275c0e9a Mon Sep 17 00:00:00 2001
From: Johannes Pohl <Johannes.Pohl90@gmail.com>
Date: Wed, 8 Feb 2017 06:46:41 +0100
Subject: [PATCH 09/11] Update README.md

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 56f44a701f..7a776e50cb 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ sudo pip3 install urh
 
 ### Windows
 1. Install [Visual C++ Build Tools](http://landinghub.visualstudio.com/visual-cpp-build-tools).
-2. Install [Python for Windows](https://www.python.org/downloads/windows/).
+2. Install [Python 3 for Windows](https://www.python.org/downloads/windows/).
 3. (Optional) Open a terminal (__cmd__) and type: ``` pip install numpy ``` - _This speeds the installation up a bit._
 4. In a terminal, type: ``` pip install urh ```.
 5. Type ``` urh ``` in a terminal or search for ``` urh ``` in search bar.

From 9b97d60c4de60d83419bb0d5b5850b824e91b378 Mon Sep 17 00:00:00 2001
From: Johannes Pohl <Johannes.Pohl90@gmail.com>
Date: Wed, 8 Feb 2017 06:46:58 +0100
Subject: [PATCH 10/11] Update README.md

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 7a776e50cb..cd799d7595 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@ sudo pip3 install urh
 5. Type ``` urh ``` in a terminal or search for ``` urh ``` in search bar.
 
 ### Mac OS X
-1. Install [Python for Mac OS X](https://www.python.org/downloads/mac-osx/).
+1. Install [Python 3 for Mac OS X](https://www.python.org/downloads/mac-osx/).
 2. In a terminal, type: ``` pip3 install urh ```.
 3. Type ``` urh ``` in a terminal to get it started.
 

From 0d3163f7c4b87eda329c5f56743d0df34c3b87b3 Mon Sep 17 00:00:00 2001
From: Johannes Pohl <Johannes.Pohl90@gmail.com>
Date: Thu, 9 Feb 2017 07:24:48 +0100
Subject: [PATCH 11/11] Update README.md

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index cd799d7595..f2b4d9f0ab 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-[![Build Status](https://travis-ci.org/jopohl/urh.svg?branch=master)](https://travis-ci.org/jopohl/urh)
+# Universal Radio Hacker [![Build Status](https://travis-ci.org/jopohl/urh.svg?branch=master)](https://travis-ci.org/jopohl/urh)
 
 ## What's this?
 Universal Radio Hacker is a suite for investigating unknown wireless protocols. Features include