How to resolve the algorithm Exponentiation operator step by step in the FutureBasic programming language

Published on 12 May 2024 09:40 PM
#Futurebasic

How to resolve the algorithm Exponentiation operator step by step in the FutureBasic programming language

Table of Contents

Problem Statement

Most programming languages have a built-in implementation of exponentiation.

Re-implement integer exponentiation for both   intint   and   floatint   as both a procedure,   and an operator (if your language supports operator definition). If the language supports operator (or procedure) overloading, then an overloaded form should be provided for both   intint   and   floatint   variants.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Exponentiation operator step by step in the FutureBasic programming language

Source code in the futurebasic programming language

local fn CustomPOW( base as double, exponent as NSInteger ) as double
  double     power = base, result
  NSUInteger i
  
  if exponent = 0.0 then result = 1.0  : exit fn
  if exponent = 1.0 then result = base : exit fn
  if exponent < 0.0
    for i = 2 to -exponent
      power = power * base
    next
    result = 1.0/power : exit fn
  end if
  for i = 2 to exponent
    power = power * base
  next
  result = power
end fn = result

print "Custom POW function:"
print "fn CustomPOW( 2,    2 ) = "; fn CustomPOW( 2,    2 )
print "fn CustomPOW( 2.5,  2 ) = "; fn CustomPOW( 2.5,  2 )
print "fn CustomPOW( 2,   -3 ) = "; fn CustomPOW( 2,   -3 )
print "fn CustomPOW( 1.78, 3 ) = "; fn CustomPOW( 1.78, 3 )
print "fn CustomPOW( 5.5,  5 ) = "; fn CustomPOW( 5.5,  5 )
print "fn CustomPOW( 4.5,  2 ) = "; fn CustomPOW( 4.5,  2 )
print "fn CustomPOW( -1,  -3 ) = "; fn CustomPOW( -1,  -3 )
print
print "Native FB ^ operator:"
print "2^2    = "; 2^2
print "2.5^2  = "; 2.5^2
print "2^-3   = "; 2^-3
print "1.78^3 = "; 1.78^3
print "5.5^5  = "; 5.5^5
print "4.5^2  = "; 4.5^2
print "-1^=3  = "; -1^-3
print
print "Native FB fn POW function:"
print "fn POW( 2,    2 ) = "; fn POW( 2,    2 )
print "fn POW( 2.5,  2 ) = "; fn POW( 2.5,  2 )
print "fn POW( 2,   -3 ) = "; fn POW( 2,   -3 )
print "fn POW( 1.78, 3 ) = "; fn POW( 1.78, 3 )
print "fn POW( 5.5,  5 ) = "; fn POW( 5.5,  5 )
print "fn POW( 4.5,  2 ) = "; fn POW( 4.5,  2 )
print "fn POW( -1,  -3 ) = "; fn POW( -1,  -3 )
print

HandleEvents

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