Python precise number type.
Project description
Num
Python precise number type.
Why?
Because float:
print(0.1 * 3.0) # 0.30000000000000004
print(0.3) # 0.3
print(0.1 * 3.0 == 0.3) # False
Installation
pip install num-tini4
Usage
# Importing the Num class from the library
from num_tini4.num import Num
# Declaring variables
num1: Num = Num()
num2: Num = Num()
# Defining variables
num1.set_fraction(1, 11) # 1/11
num2.set_int(-18) # -18
print(num1) # [NUMBER, POSITIVE, {11: -1}, {'pi': 0, 'e': 0, 'root': 1}]
print(num2) # [NUMBER, NEGATIVE, {2: 1, 3: 2}, {'pi': 0, 'e': 0, 'root': 1}]
print(repr(num1))
# Num(primes={11: -1}, special={'pi': 0, 'e': 0, 'root': 1}, sign=<Sign.POSITIVE: 1>, case=<Case.NUMBER: 1>)
print(repr(num2))
# Num(primes={2: 1, 3: 2}, special={'pi': 0, 'e': 0, 'root': 1}, sign=<Sign.NEGATIVE: -1>, case=<Case.NUMBER: 1>)
print(float(num1)) # 0.09090909090909091
print(float(num2)) # -18.0
# Operations
print((num1 + num2).get_fraction()) # (-197, 11)
print((num1 + num2).get_float()) # -17.90909090909091
print((1 / 11) + -18.0) # -17.90909090909091
print('--------------------------------------------------')
print((num1 - num2).get_fraction()) # (199, 11)
print((num1 - num2).get_float()) # 18.09090909090909
print((1 / 11) - -18.0) # 18.09090909090909
print('--------------------------------------------------')
print((num1 * num2).get_fraction()) # (-18, 11)
print((num1 * num2).get_float()) # -1.6363636363636365
print((1 / 11) * -18.0) # -1.6363636363636365
print('--------------------------------------------------')
print((num1 / num2).get_fraction()) # (-1, 198)
print((num1 / num2).get_float()) # -0.00505050505050505
print((1 / 11) / -18.0) # -0.005050505050505051
print('--------------------------------------------------')
print((num1 ** num2).get_fraction()) # (5559917313492231481, 1)
print((num1 ** num2).get_float()) # 5.559917313492231e+18
print((1 / 11) ** -18.0) # 5.559917313492229e+18
print('--------------------------------------------------')
# todo
# +=, -=, *=, /=, **=
# Comparison
# <, >, <=, >=, ==, !=
# todo
# -, abs()
# Inaccurate!!! Slow!!! Avoid!!!
num1.set_float(18 / 11)
print(num1) # [NUMBER, POSITIVE, {2: -52, 19: 1, 26041: 1, 14894582557: 1}, {'pi': 0, 'e': 0, 'root': 1}]
print(num1.get_fraction()) # (7369526662969903, 4503599627370496)
print(num1.get_float()) # 1.6363636363636365
print(18 / 11) # 1.6363636363636365
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