MATLAB Programming

Numeric Types
Turning Warnings On or Off Temporarily. When writing M-files that
contain integer data types, it is sometimes convenient to temporarily turn
integer warnings on, and then return the states of the warnings ('on' or
'off') to their previous settings. The following commands illustrate how to
do this:
oldState = intwarning('on');
int8(200);
Warning: Out of range value converted to intmin('int8') or
intmax('int8').
intwarning(oldState)
To temporarily turn the warnings off, change the first line of the preceding
code to
oldState = intwarning('off');
Recommended Usage of Math Overflow Warning. Enabling the
MATLAB:intMathOverflow warning slows down integer arithmetic. It is
recommended that you enable this particular warning only when you need
to diagnose unusual behavior in your code, and disable it during normal
program operation. The other integer warnings listed above do not affect
program performance.
Note that calling intwarning('on') enables all four integer warnings,
including the intMathOverflow warning that can have an effect on integer
arithmetic.
Integer Functions
See Integer Functions on page 2-30 for a list of functions most commonly used
with integers in MATLAB.
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