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PtCRC()

Calculate a CRC for a block of data

Synopsis:

long PtCRC( const char *buffer,
            int nbytes );

Library:

ph

Description:

This function generates a 32-bit cyclic redundancy check or CRC on the nbytes of data pointed to by buffer.

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We recommend that bitmaps and images have a CRC on the image data and the palette. This CRC is used extensively by phrelay (see the QNX Neutrino Utilities Reference) to cache images.

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You can call PtCRCValue() to calculate a running CRC checksum.

Returns:

The cyclic redundancy check.

Classification:

Photon

See also:

PtCRCValue(), PxLoadImage()

"Images" in the Raw Drawing and Animation chapter of the Photon Programmer's Guide