Calculating smallest and largest aⁿ in Julia – nextpow() and prevpow() Methods

The nextpow() is an inbuilt function in julia which is used to return the smallest not less than x, where n is a non-negative integer, a must be greater than 1, and x must be greater than 0.

Syntax: nextpow(a, x) Parameters:

• a: Specified number greater than 1.
• x: Specified number greater than 0.

Returns: It returns the smallest .

Example:

# Julia program to illustrate
# the use of nextpow() method

# Getting the smallest a ^ n
println(nextpow(2, 8))
println(nextpow(2, 10))
println(nextpow(3, 8))
println(nextpow(5, 15))

Output:

8
16
9
25

prevpow()

The prevpow() is an inbuilt function in julia which is used to return the largest not greater than x, where n is a non-negative integer, a must be greater than 1, and x must not be less than 1.

Syntax: prevpow(a, x) Parameters:

• a: Specified number greater than 1.
• x: Specified number must not be less than 1.

Returns: It returns the largest .

Example:

# Julia program to illustrate
# the use of prevpow() method

# Getting the largest a ^ n
println(prevpow(2, 8))
println(prevpow(2, 6))
println(prevpow(3, 8))
println(prevpow(5, 15))

Output:

8
4
3
5