| | |
| | | #include <stdlib.h> |
| | | #include <string.h> |
| | | #include <math.h> |
| | | #include <unistd.h> |
| | | #include <float.h> |
| | | #include <limits.h> |
| | | |
| | |
| | | { |
| | | int i,j; |
| | | for(i =0 ; i < M; ++i){ |
| | | printf("%d ", i+1); |
| | | for(j = 0; j < N; ++j){ |
| | | printf("%10.6f, ", A[i*N+j]); |
| | | } |
| | |
| | | return line; |
| | | } |
| | | |
| | | void read_all(int fd, char *buffer, size_t bytes) |
| | | { |
| | | size_t n = 0; |
| | | while(n < bytes){ |
| | | int next = read(fd, buffer + n, bytes-n); |
| | | if(next <= 0) error("read failed"); |
| | | n += next; |
| | | } |
| | | } |
| | | |
| | | void write_all(int fd, char *buffer, size_t bytes) |
| | | { |
| | | size_t n = 0; |
| | | while(n < bytes){ |
| | | size_t next = write(fd, buffer + n, bytes-n); |
| | | if(next <= 0) error("write failed"); |
| | | n += next; |
| | | } |
| | | } |
| | | |
| | | |
| | | char *copy_string(char *s) |
| | | { |
| | | char *copy = malloc(strlen(s)+1); |
| | |
| | | } |
| | | } |
| | | |
| | | float mag_array(float *a, int n) |
| | | { |
| | | int i; |
| | | float sum = 0; |
| | | for(i = 0; i < n; ++i){ |
| | | sum += a[i]*a[i]; |
| | | } |
| | | return sqrt(sum); |
| | | } |
| | | |
| | | void scale_array(float *a, int n, float s) |
| | | { |
| | | int i; |