User`s guide

Addressing mwArrays Above the 2 GB Limit

As of R2007b, you can now address mwArrays above the 2 GB limit on 64-bit

machines. Enable this by defining

MX_COMPAT_32_OFF in your mbu ild step.

Defining

MX_COMPAT_32_OFF causes both mw Size and mwIndex to be defined to

size_t (an unsigned type on both 32-bit and 64-bit machines). Not defining

MS_COMPAT_32_OFF (the default behavior) causes b oth mwSize and mwIndex to

be defined as signed

ints. On 64-bit machines, siz e_t is a 64-bit quantity.

For example, to turn on extended addressing for program

doublelarge.cpp,

your compile and build statements should look like this:

mcc -g -W cpplib:libutilp -T link:lib doubleup.m

mbuild -DMX_COMPAT_32_ OFF -DLARGE dou blel arge.cpp -L. -lutilp

-I. -v -g

The coding of MX_COMPAT _32_ OFF may in some instances lead to com piler

errors or warnings due to conversions between signed and unsigned quantifies

and 64-bit a n d 32-bit quantities.

See Appendix C, “C++ Utility Library Reference” for detaile d changes to

mwArray classes and m ethod signatures.

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