Motorola DSP56800 Guía de usuario descargar pdf (Pagina 422)

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101

Pragmas for the DSP56800 and DSP56800E

Pragma Reference

422

Targeting MC56F83xx/DSP5685x Controllers

Prototype

#pragma warn_impl_i2f_conv on | off | reset

Remarks

If you enable this pragma, the compiler issues a warning for implicitly converting

integral values to floating-point values. Listing C.24

provides an example.

Listing C.24 Example of Implicit int-to-float Conversion

#pragma warn_implicit_conv on

#pragma warn_impl_i2f_conv on

float f;

signed int si;

int main()

{

f = si; // WARNING

#pragma warn_impl_i2f_conv off

f = si; // OK

}

Use this pragma along with the warn_implicitconv pragma.

This pragma does not correspond to any panel setting in the C/C++ Preprocessor

panel. To check this setting, use __option (warn_impl_i2f_conv),

described in Checking Settings

. By default, this pragma is disabled.

warn_impl_s2u_conv

Controls the issuing of warnings for implicit conversions between the signed int

and unsigned int data types.

Prototype

#pragma warn_impl_s2u_conv on | off | reset

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