SW006015【PDF 14/120 页】C COMPILER MPLAB C32

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MPLAB ? C32 C Compiler User’s Guide

1.6

PREDEFINED MACROS

1.6.1

MPLAB C32 C Compiler Macros

MPLAB C32 C compiler defines a number of macros, most with the prefix “ _MCHP_ ,”

which characterize the various target specific options, the target processor and other

aspects of the host environment.

_MCHP_SZINT

_MCHP_SZLONG

_MCHP_SZPTR

__mchp_no_float

__NO_FLOAT

__SOFT_FLOAT

__PIC__

__pic__

__PIC32MX

__PIC32MX__

PIC32MX

__LANGUAGE_ASSEMBLY

__LANGUAGE_ASSEMBLY__

_LANGUAGE_ASSEMBLY

LANGUAGE_ASSEMBLY

__LANGUAGE_C

__LANGUAGE_C__

_LANGUAGE_C

LANGUAGE_C

__ processor __

32 or 64, depending on command line options

to set the size of an integer (-mint32

-mint64) .

32 or 64, depending on command line options

to set the size of an integer (-mlong32

-mlong64) .

32 always since all pointers are 32 bits.

Defined if -mno-float specified.

Defined if -mno-float specified.

Defined if -mno-float not specified.

Indicates that floating-point is supported via

library calls.

The translation unit is being compiled for

position independent code.

Always defined.

Defined if -ansi is not specified.

Defined if compiling a pre-processed

assembly file (.S files).

Defined if compiling a pre-processed

assembly file (.S files) and -ansi is not

specified.

Defined if compiling a C file.

Defined if compiling a C file and -ansi is not

specified.

Where “processor” is the capitalized argument

to the -mprocessor option. E.g.,

-mprocessor=32mx12f3456 will define

__32MX12F3456__ .

1.6.2

SDE Compatibility Macros

The MIPS ? SDE (Software Development Environment) defines a number of macros,

most with the prefix “_MIPS_,” which characterize various target specific options, some

determined by command line options (e.g., -mint64 ). Where applicable, these

macros will be defined by the MPLAB C32 C compiler in order to ease porting

applications and middleware from the SDE to MPLAB C32 C compiler.

DS51686A-page 10

_MIPS_SZINT

_MIPS_SZLONG

_MIPS_SZPTR

__mips_no_float

32 or 64, depending on command line options

to set the size of an integer ( -mint32

-mint64 ).

32 or 64, depending on command line options

to set the size of an integer ( -mlong32

-mlong64 ).

32 always since all pointers are 32 bits.

Defined if -mno-float specified.

? 2007 Microchip Technology Inc.

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