From this we can determine that mat1 has 7 columns

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Unformatted text preview: et by read() */ } else if (nread == 0) break; /* EOF */ nleft -= nread; ptr += nread; } return (count - nleft); /* return >= 0 */ } ssize_t writen(int fd, const void *buf, size_t count) { size_t nleft = count; ssize_t nwritten; const char *ptr = buf; while (nleft > 0) { if ((nwritten = write(fd, ptr, nleft)) <= 0) { if (errno == EINTR) nwritten = 0; /* and call write() again */ else return -1; /* errorno set by write() */ A.5. THE CSAPP.C SOURCE FILE 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 687 } nleft -= nwritten; ptr += nwritten; } return count; } static ssize_t my_read(int fd, char *ptr) { static int read_cnt = 0; static char *read_ptr, read_buf[MAXLINE]; if (read_cnt <= 0) { again: if ( (read_cnt = read(fd, read_buf, sizeof(read_buf))) < 0) { if (errno == EINTR) goto again; return -1; } else if (read_cnt == 0) return 0; read_ptr = read_buf; } read_cnt--; *ptr = *read_ptr++; return 1; } ssize_t readline(int fd, void *buf,...
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This note was uploaded on 09/02/2010 for the course ELECTRICAL 360 taught by Professor Schultz during the Spring '10 term at BYU.

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