Motorola DSP56800 Guía de usuario descargar pdf (Pagina 424)

100

101

Pragmas for the DSP56800 and DSP56800E

Pragma Reference

424

Targeting MC56F83xx/DSP5685x Controllers

Remarks

If you enable this pragma, the compiler issues a warning for all implicit arithmetic

conversions when the destination type might not represent the source value. Listing

C.26 provides an example.

Listing C.26 Example of Implicit Conversion

#pragma warn_implicitconv on

float f;

signed int si;

unsigned int ui;

int main()

{

f = si; // OK

si = f; // WARNING

ui = si; // WARNING

si = ui; // WARNING

}

The default setting for warn_impl_i2fconf pragma is disabled. Use the

warn_implicitconv pragma along with the warn_impl_i2f_conv pragma

to generate the warning for the int-to-float conversion.

This pragma corresponds to the Implicit Arithmetic Conversions setting in the C/

C++ Preprocessor panel. To check this setting, use __option

(warn_implicitconv), described in Checking Settings

. By default, this

pragma is disabled.

warn_largeargs

Controls the issuing of warnings for passing non-integer numeric values to

unprototyped functions.

Prototype

#pragma warn_largeargs on | off | reset

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