Implementation of pow() function in C

To calculate x^n, considering two cases

• intPower(x, n)

  • x and n, both are of int data type

• floatPower(x, n)

  • x and n, both are of float data type -

Assumptions

• The intPower and floatPower functions only work when x^n doesn't cross the range of double type
• The intPower and floatPower functions return INT_MAX (indicating error), when ans=0^(-ve number) or ans=(-ve number)^(non-integer number). Hence both the functions fail only at the case x=INT_MAX and n=1
• The floatPower function takes all floating point numbers of x, n except the range ( (-inf < x < 0) and (n is not an integer) )

Screen Shots

Case1 - x,n are ints

Case2 - x,n are floats