newmat.c

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· C语言 代码 · 共 32 行

/*	newmat.c	4.1	83/03/09	*/
/*
 * newmat: return a brand new bitmat with the proper size.
 * To get rid of it just call free.
 */

#include "bit.h"

bitmat
newmat(rows, cols)
int rows, cols;
{
	int size = ((cols + 7) >> 3) * rows;
	char *m;

#ifdef TRACE
	if (size <= 0 && trace) {
		fprintf(trace, "newmat: rows=%d, cols=%d\n", rows, cols);
		abort();
	}
	if (trace)
		fprintf(trace, "newmat: malloc(%d) =", size);
#endif
	m = (char *) malloc(size);
#ifdef TRACE
	if (trace)
		fprintf(trace, "%x\n", m);
#endif
	zermat(m, rows, cols);
	return (m);
}