# numeric -- convert to floating point

## Synopsis

• Usage:
numeric x
numeric(prec,x)
numeric_prec x
• Inputs:
• x
• prec, an integer, the number of bits of precision to use in the computation
• Outputs:
• the expression obtained from x by converting the integers, rational numbers, and symbolic constants within it to double floating point numbers.

## Description

 ```i1 : x = {1,2/3,pi} 2 o1 = {1, -, pi} 3 o1 : List``` ```i2 : numeric oo o2 = {1, .666667, 3.14159} o2 : List``` ```i3 : numeric_200 pi o3 = 3.14159265358979323846264338327950288419716939937510582097494 o3 : RR (of precision 200)``` ```i4 : numeric_100 oo o4 = 3.14159265358979323846264338328 o4 : RR (of precision 100)```

• RR -- the class of all real numbers
• CC -- the class of all complex numbers
• Constant

## Ways to use numeric :

• numeric(CC)
• numeric(Constant)
• numeric(InfiniteNumber)
• numeric(Matrix)
• numeric(Number)
• numeric(RR)
• numeric(VisibleList)
• numeric(ZZ,CC)
• numeric(ZZ,Constant)
• numeric(ZZ,InfiniteNumber)
• numeric(ZZ,Matrix)
• numeric(ZZ,Number)
• numeric(ZZ,VisibleList)
• numeric(Vector) (missing documentation)
• numeric(ZZ,Vector) (missing documentation)