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# NAME

MDK::Common::Math - miscellaneous math functions

# SYNOPSIS

``    use MDK::Common::Math qw(:all);``

# EXPORTS

\$PI

the well-known constant

even(INT)
odd(INT)

is the number even or odd?

sqr(FLOAT)

`sqr(3)` gives `9`

sign(FLOAT)

returns a value in { -1, 0, 1 }

round(FLOAT)

`round(1.2)` gives `1`, `round(1.6)` gives `2`

round_up(FLOAT, INT)

returns the number rounded up to the modulo: `round_up(11,10)` gives `20`

round_down(FLOAT, INT)

returns the number rounded down to the modulo: `round_down(11,10)` gives `10`

divide(INT, INT)

integer division (which is lacking in perl). In array context, also returns the remainder: `(\$a, \$b) = divide(10,3)` gives `\$a is 3` and `\$b is 1`

min(LIST)
max(LIST)

returns the minimum/maximum number in the list

or_(LIST)

is there a true value in the list?

and_(LIST)

are all values true in the list?

sum(LIST)
product(LIST)

returns the sum/product of all the element in the list

factorial(INT)

`factorial(4)` gives `24` (4*3*2)

# OTHER

the following functions are provided, but not exported:

factorize(INT)

`factorize(40)` gives `([2,3], [5,1])` as 40 = 2^3 + 5^1

decimal2fraction(FLOAT)

`decimal2fraction(1.3333333333)` gives `(4, 3)` (\$PRECISION is used to decide which precision to use)

poly2(a,b,c)

Solves the a*x2+b*x+c=0 polynomial: `poly2(1,0,-1)` gives `(1, -1)`

permutations(n,p)

A(n,p)

combinaisons(n,p)

C(n,p)

MDK::Common