The math.ldexp() function returns a floating-point number equal to x*(2**i). The ldexp in the functions name stands for "load exponent".
math.ldexp(x,i) Where, parameter x is an integer or a floating-point number. Parameter i is the integer exponent, it should be strictly an integer value, otherwise, a TypeError is raised.
The function returns a floating-point number equal to x*(2**i).
import math
print(math.ldexp(3, 2))
print(math.ldexp(2.5, 5))
print(math.ldexp(4.1, 5))
print(math.ldexp(10, 10))Math.ldexp is useful in Python for scaling a number using the exponent value. It is commonly used in scientific computing to quickly multiply a number by a power of two. It can also be used to scale a number up or down to the nearest integer, handle overflow, and adjust to the precision of the floating-point format.
The following example uses math.ldexp() to scale pi up by a factor of 8.
import math
print(math.ldexp(math.pi, 8))
