Tp nombres entiers

TP nombre entier/main.py

@@ -0,0 +1,65 @@
+from sys import argv as args
+from tp_nombres_entiers import *
+
+def is_equal(a, b):
+    return a == b
+
+def __main__():
+    if len(args) == 2:
+        if args[1] == "tp_nombres_entiers":
+            print("=======================binary_to_int=======================")
+            print(binary_to_int('11'))
+            print(binary_to_int('101010'))
+            print("=======================get_nb_bits=======================")
+            print(get_nb_bits(3))
+            print(get_nb_bits(32))
+            print("=======================int_to_bits=======================")
+            print(int_to_bits(3))
+            print(int_to_bits(32))
+            print("=======================initialisation en binaire=======================")
+            i = 42
+            j = 0b101010
+            print(i)
+            print(j)
+            print(is_equal(i, j))
+            print("=======================masque=======================")
+            i = 183
+            mask = 0b10010001
+            j = i & mask
+            print(j)
+            print("=======================positive_or_negative_4_bytes_int_to_bits=======================")
+            print(positive_or_negative_4_bytes_int_to_bits(0))
+            print(positive_or_negative_4_bytes_int_to_bits(1))
+            print(positive_or_negative_4_bytes_int_to_bits(2))
+            print(positive_or_negative_4_bytes_int_to_bits(3))
+            print(positive_or_negative_4_bytes_int_to_bits(4))
+            print(positive_or_negative_4_bytes_int_to_bits(5))
+            print(positive_or_negative_4_bytes_int_to_bits(6))
+            print(positive_or_negative_4_bytes_int_to_bits(7))
+            print(positive_or_negative_4_bytes_int_to_bits(-1))
+            print(positive_or_negative_4_bytes_int_to_bits(-2))
+            print(positive_or_negative_4_bytes_int_to_bits(-3))
+            print(positive_or_negative_4_bytes_int_to_bits(-4))
+            print(positive_or_negative_4_bytes_int_to_bits(-5))
+            print(positive_or_negative_4_bytes_int_to_bits(-6))
+            print(positive_or_negative_4_bytes_int_to_bits(-7))
+            print(positive_or_negative_4_bytes_int_to_bits(-8))
+            print("=======================get_bits=======================")
+            print(get_bits('10110', 1))
+            print(get_bits('10110', 2))
+            print(get_bits('10110', 3))
+            print(get_bits('10110', 4))
+            print(get_bits('10110', 5))
+            print(get_bits('10110', 6))
+            print("=======================add=======================")
+            print(add('010101', '100111'))
+            print(add('1', '1'))
+        else:
+            print("Usage: python main.py <nombre>")
+            return
+    else:
+        print("Usage: python main.py <nombre>")
+        return
+
+if __name__ == "__main__":
+    __main__()

TP nombre entier/tp_nombres_entiers.py

@@ -0,0 +1,55 @@
+def binary_to_int(b):
+    n = 0
+    for i in range(len(b)):
+        n = n * 2 + int(b[i])
+    return n
+
+
+def get_nb_bits(i):
+    n = 0
+    while 2 ** n <= i:
+        n += 1
+    return n
+
+
+def int_to_bits(i):
+    b = ""
+    while i > 0:
+        b = str(i % 2) + b
+        i = i // 2
+    return b
+
+
+def positive_or_negative_4_bytes_int_to_bits(i):
+    if i < 0:
+        i = 2 ** 32 + i
+    b = ""
+    while i > 0:
+        b = str(i % 2) + b
+        i = i // 2
+    b = "0" * (4 - len(b)) + b
+    return b
+
+
+def get_bits(b, i):
+    if i <= len(b):
+        return int(b[len(b) - i])
+    else:
+        return 0
+
+
+def add(b1, b2):
+    n = max(len(b1), len(b2))
+    b1 = "0" * (n - len(b1)) + b1
+    b2 = "0" * (n - len(b2)) + b2
+    retenue = 0
+    somme = ""
+    for i in range(n - 1, -1, -1):
+        s = int(b1[i]) + int(b2[i]) + retenue
+        somme = str(s % 2) + somme
+        retenue = s // 2
+    if retenue > 0:
+        somme = "1" + somme
+    return somme
+
+