isodd: a pedestrian parity checker

Version (2.58 KB) by us
ISODD returns TRUE for integers of any numeric MATLAB class that are not evenly divisible by 2
Updated 14 Aug 2009

View License

ISODD returns TRUE for members (N) of a numeric array, which
- are within the range of ±bitmax
- are integers such that N == fix(N)
- are integers not evenly divisible by 2

Unlike the typical computational approach using REM/MOD,
ISODD produces a not-valid flag for numbers, which are
1) not an integer
2) larger than the maximum possible double precision
integer representation (±bitmax)
and does never return their parity as being odd

REM/MOD, on the other hand, do not complain if an input
is not a valid candidate for being even or odd at all
and, therefore, are NOT reliable parity checkers

> help isodd
for usage and a brief example for this small utility

Cite As

us (2024). isodd: a pedestrian parity checker (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2009a
Compatible with any release
Platform Compatibility
Windows macOS Linux
Find more on Numeric Types in Help Center and MATLAB Answers

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!
Version Published Release Notes

change in the help section; version tag 14-Aug-2009 20:35:23

any integer input now is typecast to double before testing; version tag 13-Aug-2009 23:18:39

user request: ND arrays now return the results encapsulated in cells; version tag 29-May-2009 21:36:47

help/example section reorganized; version tag 29-May-2009 15:03:56

changed the output TFODD to mark valid odd integers only; thus, the syntax vec(tfodd&tferr) now is simply vec(tfodd) for odd and vec(~tfodd&tferr) for even integers; version tag 28-May-2009 22:43:42

an annoying typo was corrected