3 /* fwrite( void *, size_t, size_t, FILE * )
5 This file is part of the Public Domain C Library (PDCLib).
6 Permission is granted to use, modify, and / or redistribute at will.
13 #include <_PDCLIB_glue.h>
18 size_t fread( void * _PDCLIB_restrict ptr, size_t size, size_t nmemb, struct _PDCLIB_file_t * _PDCLIB_restrict stream )
20 if ( _PDCLIB_prepread( stream ) == EOF )
24 char * dest = (char *)ptr;
26 for ( nmemb_i = 0; nmemb_i < nmemb; ++nmemb_i )
28 for ( size_t size_i = 0; size_i < size; ++size_i )
30 if ( stream->bufidx == stream->bufend )
32 if ( _PDCLIB_fillbuffer( stream ) == EOF )
34 /* Could not read requested data */
38 dest[ nmemb_i * size + size_i ] = stream->buffer[ stream->bufidx++ ];
47 #include <_PDCLIB_test.h>
52 char const * message = "Testing fwrite()...\n";
55 TESTCASE( ( fh = tmpfile() ) != NULL );
56 /* fwrite() / readback */
57 TESTCASE( fwrite( message, 1, 20, fh ) == 20 );
59 TESTCASE( fread( buffer, 1, 20, fh ) == 20 );
60 TESTCASE( memcmp( buffer, message, 20 ) == 0 );
61 TESTCASE( buffer[20] == 'x' );
62 /* same, different nmemb / size settings */
64 TESTCASE( memset( buffer, '\0', 20 ) == buffer );
65 TESTCASE( fwrite( message, 5, 4, fh ) == 4 );
67 TESTCASE( fread( buffer, 5, 4, fh ) == 4 );
68 TESTCASE( memcmp( buffer, message, 20 ) == 0 );
69 TESTCASE( buffer[20] == 'x' );
72 TESTCASE( memset( buffer, '\0', 20 ) == buffer );
73 TESTCASE( fwrite( message, 20, 1, fh ) == 1 );
75 TESTCASE( fread( buffer, 20, 1, fh ) == 1 );
76 TESTCASE( memcmp( buffer, message, 20 ) == 0 );
77 TESTCASE( buffer[20] == 'x' );
79 TESTCASE( fclose( fh ) == 0 );