Development Tools

-use_mda

This option specifies whether to allow generation of a code using the division/multiplication and multiply-accumulate unit.

[Specification format]

-use_mda={not_use|mda}

  not_use: Suppresses generation of a code by the compiler using the division/multiplication and multiply-accumulate unit.

  mda: Allows generation of a code by the compiler using the division/multiplication and multiply-accumulate unit.

-	Interpretation when omitted

When the -cpu=S1 or -cpu=S3 option is specified, the code is the same as when the -use_mda=not_use option is specified.

When the -cpu=S2 option is specified, the code is the same as when the -use_mda=mda option is specified.

[Detailed description]

-	This option specifies whether to allow generation of a code by the compiler using the division/multiplication and multiply-accumulate unit.

-	The following shows the ccrl operation when both this option and the -cpu option are specified.

[Caution]

-	To control codes other than those generated by the compiler, isolation of the runtime library is also required. For details, see "7.1 Supplied Libraries".

-	Do not specify -use_mda=mda for devices without division/multiplication and multiply-accumulate units.

[Example of use]

-	To generate a code that uses the division/multiplication and multiply-accumulate unit, describe as:

>ccrl -use_mda=mda -cpu=S2 -dev=dr5f100pj.dvf main.c