add week03 assignment

week03/Chapter 03 Numerics and Error Analysis.ipynb

@@ -235,6 +235,7 @@
    "cell_type": "code",
    "execution_count": 15,
    "metadata": {
+    "collapsed": true,
     "slideshow": {
      "slide_type": "skip"
     }
@@ -289,6 +290,7 @@
    "cell_type": "code",
    "execution_count": 26,
    "metadata": {
+    "collapsed": true,
     "slideshow": {
      "slide_type": "skip"
     }
@@ -336,6 +338,75 @@
     "$0.1 \\times 0.1 = 0.01 \\approx 0.0$ \n"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 28,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]"
+      ]
+     },
+     "execution_count": 28,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "v = [0 ,0,0,0,1 ,1,0,0]\n",
+    "\n",
+    "v = [0 , 0,0,0,0,0,0, 0,0,0,0,0]\n",
+    "\n",
+    "sign = -1 if v[0] == 1 else 1\n",
+    "value = 0\n",
+    "v_len = len(v)\n",
+    "\n",
+    "[ i for i in range(1,8)]\n",
+    "\n",
+    "# [  2 ** (4 - i) for i in range(1,8)]\n",
+    "# sum([ v[i] * 2 ** (4-i) for i in range(1,8) ])"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 23,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "-2.375\n"
+     ]
+    }
+   ],
+   "source": [
+    "def value(v):\n",
+    "    sign = -1 if v[0] == 1 else 1\n",
+    "    return sign * sum([ v[i] * 2 ** (4-i) for i in range(1,8) ])\n",
+    "\n",
+    "v = [1 ,0,0,1,0, 0,1,1]\n",
+    "\n",
+    "print(value(v))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": [
+    "def value(v , a, b):\n",
+    "    sign = -1 if v[0] == 1 else 1\n",
+    "    \n",
+    "    \n",
+    "\n"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -472,7 +543,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.5.2"
+   "version": "3.6.3"
   }
  },
  "nbformat": 4,

week03/assignment.py

+def value(v, p=4, n=3):
+    '''
+    รับค่า v มาเพื่อหาค่าเป็นเลขฐานสิบ
+    p เป็นจำนวนหลักที่ใช้เป็นบวก 4 หลัก
+    n เป็นจำนวนหลักที่ใช้เป็นลบ 3 หลัก
+    sign bit เป็นหลักแรกเสมอ
+    '''
+    tmp = [int(i) for i in v]
+    sign = -1 if tmp[0] == 1 else 1
+    return sign * sum([tmp[i] * 2 ** (p-i) for i in range(1, p+n+1)])
+
+
+v = [0, 0, 0, 0, 1, 1, 0, 0]
+print(v)
+print(value(v))
+
+v = [1, 0, 1, 0, 1, 0, 1, 1]
+print(v)
+print(value(v))
+
+v = [1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0]
+print(v)
+print(value(v, 6, 5))
+
+v = '100000110000'
+print(v)
+print(value(v, 6, 5))
+
+v = '00001100'
+print(v)
+print(value(v))
+
+v = '100000101010000'
+print(v)
+print(value(v, 9, 5))