MATLAB COMPILER RELEASE NOTES Guida Utente Pagina 195

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mbrealscalar
7-17
7mbrealscalar
Purpose Assert variable is real scalar.
Syntax mbrealscalar(n)
Description The statement
mbrealscalar(x)
causes the MATLAB Compiler to impute that x is a real scalar. At runtime, if
mbrealscalar determines that x holds a value other than a real scalar,
mbrealscalar issues an error message and halts execution of the MEX-file.
mbrealscalar tell s t he MAT LAB interpreter to check whether x holds a real
scalar value. If
x does not, mbrealscalar issues an error message and halts
execution of the M-file. The MATLAB interpreter does not use
mbrealscalar
to impute x.
Note that
mbrealscalar only tests x atthepointinan M-fileorMEX-filewhere
an
mbrealscalar call appears. In other words, an mbrealscalar call tests the
value of
x only once. If x becomes a vector after the mbrealscalar test,
mbrealscalar cannot issue an error message.
mbrealscalar defines a real scalar as any value that meets the criteria of both
mbreal and mbscalar.
Example This code in MATLAB causes mbrealscalar to generate a n error message
because, although
n contains only real numbers, n is not a scalar.
n = [17.2 15.3];
mbrealscalar(n)
??? Error using ==> mbscalar
Argument of mbscalar must be scalar.
See Also mbreal, mbscalar, mbrealvector, mcc
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