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isReal -- whether a number is real

Usage:

isReal x
Inputs:
- x, a number
Outputs:
- a Boolean value, whether x is real

Description

i1 : isReal 2.

o1 = true

i2 : isReal sqrt(-1)

o2 = false

Ways to use isReal:

isReal(CC)
isReal(Constant)
isReal(InfiniteNumber)
isReal(QQ)
isReal(RR)
isReal(RRi)
isReal(ZZ)

For the programmer

The object isReal is a method function.

The source of this document is in Macaulay2Doc/ov_analytic_functions.m2:458:0.