source: buchla-68k/libcio/fwrite.c

/*
   =============================================================================
        fwrite.c -- write a stream file
        Version 3 -- 1987-07-09 -- D.N. Lynx Crowe
   =============================================================================
*/

#include "ram.h"

/*
   =============================================================================
        fwrite(buffer, size, number, stream) -- write 'number' items of sixe
        'size' bytes from 'buffer' onto 'stream'.  Returns the number of items
        written.  If 'number' or 'size' is negative, nothing is written, and
        0 is returned.  EOF may cause the last item written to be imcomplete.
        Check with feof() to detect an EOF condition.  Use ferror() to check
        for error conditions.
   =============================================================================
*/

int16_t fwrite(void *buffer, int16_t size, int16_t number, FILE *stream)
{
        uint8_t *buffer8;
        register int16_t i, j;

        buffer8 = buffer;

        if (size < 0)           /* check size for validity */
                return(0);

        if (number < 0)         /* check number for validity */
                return(0);

        for (i = 0; i < number; ++i)
                for (j = 0; j < size; ++j)
                        if (putc(*buffer8++, stream) EQ EOF)
                                return(i);

        return(number);
}