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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 = 3.141592653589793238462643383279502884197169399375105820974944

o3 : RR (of precision 200)

i4 : numeric_100 oo

o4 = 3.141592653589793238462643383279

o4 : RR (of precision 100)

See also

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

Ways to use numeric:

numeric(CC)
numeric(Constant)
numeric(IndeterminateNumber)
numeric(InfiniteNumber)
numeric(InfiniteNumber,Constant)
numeric(Matrix)
numeric(Number)
numeric(RR)
numeric(RRi)
numeric(Vector)
numeric(VisibleList)
numeric(ZZ,CC)
numeric(ZZ,Constant)
numeric(ZZ,IndeterminateNumber)
numeric(ZZ,InfiniteNumber)
numeric(ZZ,Matrix)
numeric(ZZ,Number)
numeric(ZZ,RRi)
numeric(ZZ,Vector)
numeric(ZZ,VisibleList)

For the programmer

The object numeric is a method function.