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Adding good multiplication function

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chabisik 2022-03-26 17:05:01 +01:00
parent afcb66f6bd
commit a6f3ace74e
1 changed files with 74 additions and 3 deletions
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77
CTPLICA/comproject.py
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@ -1,6 +1,7 @@
#!/usr/bin/python3
import sys
from unittest import result
import numpy
import time
@ -163,13 +164,83 @@ def greater_than(arg1_integer_part: str, arg2_integer_part: str, arg1_decimal_pa
def sb_multiply(arg1: str, arg2: str) -> bool:
pass
# transform arg1 to string if not already in string and test if it's a full integer (without decimal part or decimal part equals zero)
arg1_as_string = str(arg1)
arg1_integer_part = arg1_as_string
arg1_decimal_part = ''
arg1_is_full_integer = True
arg1_is_negative = True if arg1_integer_part.startswith('-') else False
try:
arg1_integer_part, arg1_decimal_part = arg1_as_string.split(".")
if arg1_decimal_part==len(arg1_decimal_part)*'0': arg1_is_full_integer = True
else: arg1_is_full_integer = False
except:
pass#nothing to do
if arg1_is_negative: arg1_integer_part = arg1_integer_part.replace('-', '')
# transform arg2 to string if not already in string and test if it's a full integer (without decimal part or decimal part equals zero)
arg2_as_string = str(arg2)
arg2_integer_part = arg2_as_string
arg2_decimal_part = ''
arg2_is_full_integer = True
arg2_is_negative = True if arg2_integer_part.startswith('-') else False
try:
arg2_integer_part, arg2_decimal_part = arg2_as_string.split(".")
if arg2_decimal_part==len(arg2_decimal_part)*'0': arg2_is_full_integer = True
else: arg2_is_full_integer = False
except:
pass#nothing to do
if arg2_is_negative: arg2_integer_part = arg2_integer_part.replace('-', '')
# making integer and decimal parts same size
max_integer_part_size = max( len(arg1_integer_part), len(arg2_integer_part) )
arg1_integer_part = '0'*(max_integer_part_size-len(arg1_integer_part)) + arg1_integer_part
arg2_integer_part = '0'*(max_integer_part_size-len(arg2_integer_part)) + arg2_integer_part
#---------
max_decimal_part_size = max(len(arg1_decimal_part),len(arg2_decimal_part))
arg1_decimal_part = arg1_decimal_part + '0'*(max_decimal_part_size-len(arg1_decimal_part))
arg2_decimal_part = arg2_decimal_part + '0'*(max_decimal_part_size-len(arg2_decimal_part))
# making real multiplication operation
rem = '0'
intermediate_numbers = []
#down_number_in_multiplication = arg2_integer_part+arg2_decimal_part
#up_number_in_multiplication = arg1_integer_part+arg1_decimal_part
if arg2_is_full_integer:
down_number_in_multiplication = arg2_integer_part
else:
down_number_in_multiplication = arg2_integer_part+arg2_decimal_part
if arg1_is_full_integer:
up_number_in_multiplication = arg1_integer_part
else:
up_number_in_multiplication = arg1_integer_part+arg1_decimal_part
print("up_number_in_multiplication", up_number_in_multiplication)
print("down_number_in_multiplication", down_number_in_multiplication)
for j in range(len(down_number_in_multiplication)-1, -1, -1):
current_intermediate_number = '0'*( (len(down_number_in_multiplication)-1) - j )
for i in range(len(up_number_in_multiplication)-1, -1, -1):
res = int( eval( '((' + down_number_in_multiplication[j] + '*' + up_number_in_multiplication[i] + ')+' + str(rem) + ')%10' ) )
current_intermediate_number = str(res) + current_intermediate_number
rem = int( eval( '(((' + down_number_in_multiplication[j] + '*' + up_number_in_multiplication[i] + ')+' + str(rem) + ') - ' + str(res) + ')/10') )
if rem != '0': current_intermediate_number = str(rem) + current_intermediate_number
intermediate_numbers.append(current_intermediate_number)
result = intermediate_numbers[0]
for k in range(1, len(intermediate_numbers)):
result = sb_addition(result, intermediate_numbers[k])
print("result before putting . :", result)
if not(arg1_is_full_integer) or not(arg2_is_full_integer):
result = result[:-len(arg1_decimal_part+arg2_decimal_part)]+'.'+result[len(result)-len(arg1_decimal_part+arg2_decimal_part):] #here to modifiy
while result.startswith('0'): result = result[1:]
if (arg1_is_negative and not(arg2_is_negative)) or (not(arg1_is_negative) and arg2_is_negative): result = '-' + result
#print("result", result[:-len(arg1_decimal_part+arg2_decimal_part)]+'.'+result[len(result)-len(arg1_decimal_part+arg2_decimal_part):])
return result
if __name__=='__main__':
print("add", sb_addition("-10", "-1.99999993") )
#print("add", sb_addition("2222222222222222222222222222222222222222.55", "2.55") )
#print("add", sb_addition("3.8257", "0.8257") )
#print( type(sb_substract("9999999.019999", "99999.99999993")) )
print("sub", sb_substract("12", "78.9999") )
#print("sub", sb_substract("12", "78.9999") )
#print(greater_than("0","1110", "0","1112", True, True))
#print(greater_than("0","0", "1110","1112"))
#print(greater_than('9001','9003'))
print("mul", sb_multiply('123','123.0'))
pass