| | |
| | | #include <stdlib.h> |
| | | #include <string.h> |
| | | #include <math.h> |
| | | #include <assert.h> |
| | | #include <unistd.h> |
| | | #include <float.h> |
| | | #include <limits.h> |
| | | |
| | | #include "utils.h" |
| | | |
| | | void sorta_shuffle(void *arr, size_t n, size_t size, size_t sections) |
| | | { |
| | | size_t i; |
| | | for(i = 0; i < sections; ++i){ |
| | | size_t start = n*i/sections; |
| | | size_t end = n*(i+1)/sections; |
| | | size_t num = end-start; |
| | | shuffle(arr+(start*size), num, size); |
| | | } |
| | | } |
| | | |
| | | void shuffle(void *arr, size_t n, size_t size) |
| | | { |
| | | size_t i; |
| | | void *swp = calloc(1, size); |
| | | for(i = 0; i < n-1; ++i){ |
| | | size_t j = i + rand()/(RAND_MAX / (n-i)+1); |
| | | memcpy(swp, arr+(j*size), size); |
| | | memcpy(arr+(j*size), arr+(i*size), size); |
| | | memcpy(arr+(i*size), swp, size); |
| | | } |
| | | } |
| | | |
| | | void del_arg(int argc, char **argv, int index) |
| | | { |
| | | int i; |
| | | for(i = index; i < argc-1; ++i) argv[i] = argv[i+1]; |
| | | argv[i] = 0; |
| | | } |
| | | |
| | | int find_arg(int argc, char* argv[], char *arg) |
| | | { |
| | | int i; |
| | | for(i = 0; i < argc; ++i) { |
| | | if(!argv[i]) continue; |
| | | if(0==strcmp(argv[i], arg)) { |
| | | del_arg(argc, argv, i); |
| | | return 1; |
| | | } |
| | | } |
| | | return 0; |
| | | } |
| | | |
| | | int find_int_arg(int argc, char **argv, char *arg, int def) |
| | | { |
| | | int i; |
| | | for(i = 0; i < argc-1; ++i){ |
| | | if(!argv[i]) continue; |
| | | if(0==strcmp(argv[i], arg)){ |
| | | def = atoi(argv[i+1]); |
| | | del_arg(argc, argv, i); |
| | | del_arg(argc, argv, i); |
| | | break; |
| | | } |
| | | } |
| | | return def; |
| | | } |
| | | |
| | | float find_float_arg(int argc, char **argv, char *arg, float def) |
| | | { |
| | | int i; |
| | | for(i = 0; i < argc-1; ++i){ |
| | | if(!argv[i]) continue; |
| | | if(0==strcmp(argv[i], arg)){ |
| | | def = atof(argv[i+1]); |
| | | del_arg(argc, argv, i); |
| | | del_arg(argc, argv, i); |
| | | break; |
| | | } |
| | | } |
| | | return def; |
| | | } |
| | | |
| | | char *find_char_arg(int argc, char **argv, char *arg, char *def) |
| | | { |
| | | int i; |
| | | for(i = 0; i < argc-1; ++i){ |
| | | if(!argv[i]) continue; |
| | | if(0==strcmp(argv[i], arg)){ |
| | | def = argv[i+1]; |
| | | del_arg(argc, argv, i); |
| | | del_arg(argc, argv, i); |
| | | break; |
| | | } |
| | | } |
| | | return def; |
| | | } |
| | | |
| | | |
| | | char *basecfg(char *cfgfile) |
| | | { |
| | | char *c = cfgfile; |
| | | char *next; |
| | | while((next = strchr(c, '/'))) |
| | | { |
| | | c = next+1; |
| | | } |
| | | c = copy_string(c); |
| | | next = strchr(c, '.'); |
| | | if (next) *next = 0; |
| | | return c; |
| | | } |
| | | |
| | | int alphanum_to_int(char c) |
| | | { |
| | | return (c < 58) ? c - 48 : c-87; |
| | | } |
| | | char int_to_alphanum(int i) |
| | | { |
| | | if (i == 36) return '.'; |
| | | return (i < 10) ? i + 48 : i + 87; |
| | | } |
| | | |
| | | void pm(int M, int N, float *A) |
| | | { |
| | | int i,j; |
| | | for(i =0 ; i < M; ++i){ |
| | | printf("%d ", i+1); |
| | | for(j = 0; j < N; ++j){ |
| | | printf("%2.4f, ", A[i*N+j]); |
| | | } |
| | | printf("\n"); |
| | | } |
| | | printf("\n"); |
| | | } |
| | | |
| | | char *find_replace(char *str, char *orig, char *rep) |
| | | { |
| | | static char buffer[4096]; |
| | | static char buffer2[4096]; |
| | | static char buffer3[4096]; |
| | | char *p; |
| | | |
| | | if(!(p = strstr(str, orig))) // Is 'orig' even in 'str'? |
| | | return str; |
| | | |
| | | strncpy(buffer, str, p-str); // Copy characters from 'str' start to 'orig' st$ |
| | | buffer[p-str] = '\0'; |
| | | strncpy(buffer2, str, p-str); // Copy characters from 'str' start to 'orig' st$ |
| | | buffer2[p-str] = '\0'; |
| | | |
| | | sprintf(buffer+(p-str), "%s%s", rep, p+strlen(orig)); |
| | | sprintf(buffer3, "%s%s%s", buffer2, rep, p+strlen(orig)); |
| | | sprintf(buffer, "%s", buffer3); |
| | | |
| | | return buffer; |
| | | } |
| | |
| | | void top_k(float *a, int n, int k, int *index) |
| | | { |
| | | int i,j; |
| | | for(j = 0; j < k; ++j) index[j] = 0; |
| | | for(j = 0; j < k; ++j) index[j] = -1; |
| | | for(i = 0; i < n; ++i){ |
| | | int curr = i; |
| | | for(j = 0; j < k; ++j){ |
| | | if(a[curr] > a[index[j]]){ |
| | | if((index[j] < 0) || a[curr] > a[index[j]]){ |
| | | int swap = curr; |
| | | curr = index[j]; |
| | | index[j] = swap; |
| | |
| | | } |
| | | } |
| | | |
| | | void error(char *s) |
| | | void error(const char *s) |
| | | { |
| | | perror(s); |
| | | //fprintf(stderr, "Error: %s\n", s); |
| | | exit(0); |
| | | assert(0); |
| | | exit(-1); |
| | | } |
| | | |
| | | void malloc_error() |
| | |
| | | |
| | | list *split_str(char *s, char delim) |
| | | { |
| | | int i; |
| | | int len = strlen(s); |
| | | size_t i; |
| | | size_t len = strlen(s); |
| | | list *l = make_list(); |
| | | list_insert(l, s); |
| | | for(i = 0; i < len; ++i){ |
| | |
| | | |
| | | void strip(char *s) |
| | | { |
| | | int i; |
| | | int len = strlen(s); |
| | | int offset = 0; |
| | | size_t i; |
| | | size_t len = strlen(s); |
| | | size_t offset = 0; |
| | | for(i = 0; i < len; ++i){ |
| | | char c = s[i]; |
| | | if(c==' '||c=='\t'||c=='\n') ++offset; |
| | |
| | | |
| | | void strip_char(char *s, char bad) |
| | | { |
| | | int i; |
| | | int len = strlen(s); |
| | | int offset = 0; |
| | | size_t i; |
| | | size_t len = strlen(s); |
| | | size_t offset = 0; |
| | | for(i = 0; i < len; ++i){ |
| | | char c = s[i]; |
| | | if(c==bad) ++offset; |
| | |
| | | s[len-offset] = '\0'; |
| | | } |
| | | |
| | | void free_ptrs(void **ptrs, int n) |
| | | { |
| | | int i; |
| | | for(i = 0; i < n; ++i) free(ptrs[i]); |
| | | free(ptrs); |
| | | } |
| | | |
| | | char *fgetl(FILE *fp) |
| | | { |
| | | if(feof(fp)) return 0; |
| | | unsigned long size = 512; |
| | | size_t size = 512; |
| | | char *line = malloc(size*sizeof(char)); |
| | | if(!fgets(line, size, fp)){ |
| | | free(line); |
| | | return 0; |
| | | } |
| | | |
| | | int curr = strlen(line); |
| | | size_t curr = strlen(line); |
| | | |
| | | while(line[curr-1]!='\n'){ |
| | | size *= 2; |
| | | line = realloc(line, size*sizeof(char)); |
| | | if(!line) { |
| | | printf("%ld\n", size); |
| | | malloc_error(); |
| | | while((line[curr-1] != '\n') && !feof(fp)){ |
| | | if(curr == size-1){ |
| | | size *= 2; |
| | | line = realloc(line, size*sizeof(char)); |
| | | if(!line) { |
| | | printf("%ld\n", size); |
| | | malloc_error(); |
| | | } |
| | | } |
| | | fgets(&line[curr], size-curr, fp); |
| | | size_t readsize = size-curr; |
| | | if(readsize > INT_MAX) readsize = INT_MAX-1; |
| | | fgets(&line[curr], readsize, fp); |
| | | curr = strlen(line); |
| | | } |
| | | line[curr-1] = '\0'; |
| | | if(line[curr-1] == '\n') line[curr-1] = '\0'; |
| | | |
| | | return line; |
| | | } |
| | | |
| | | int read_int(int fd) |
| | | { |
| | | int n = 0; |
| | | int next = read(fd, &n, sizeof(int)); |
| | | if(next <= 0) return -1; |
| | | return n; |
| | | } |
| | | |
| | | void write_int(int fd, int n) |
| | | { |
| | | int next = write(fd, &n, sizeof(int)); |
| | | if(next <= 0) error("read failed"); |
| | | } |
| | | |
| | | int read_all_fail(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) return 1; |
| | | n += next; |
| | | } |
| | | return 0; |
| | | } |
| | | |
| | | int write_all_fail(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) return 1; |
| | | n += next; |
| | | } |
| | | return 0; |
| | | } |
| | | |
| | | 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); |
| | |
| | | return sum_array(a,n)/n; |
| | | } |
| | | |
| | | void mean_arrays(float **a, int n, int els, float *avg) |
| | | { |
| | | int i; |
| | | int j; |
| | | memset(avg, 0, els*sizeof(float)); |
| | | for(j = 0; j < n; ++j){ |
| | | for(i = 0; i < els; ++i){ |
| | | avg[i] += a[j][i]; |
| | | } |
| | | } |
| | | for(i = 0; i < els; ++i){ |
| | | avg[i] /= n; |
| | | } |
| | | } |
| | | |
| | | float variance_array(float *a, int n) |
| | | { |
| | | int i; |
| | |
| | | return variance; |
| | | } |
| | | |
| | | float constrain(float a, float max) |
| | | float constrain(float min, float max, float a) |
| | | { |
| | | if(a > abs(max)) return abs(max); |
| | | if(a < -abs(max)) return -abs(max); |
| | | if (a < min) return min; |
| | | if (a > max) return max; |
| | | return a; |
| | | } |
| | | |
| | | float mse_array(float *a, int n) |
| | | { |
| | | int i; |
| | | float sum = 0; |
| | | for(i = 0; i < n; ++i) sum += a[i]*a[i]; |
| | | return sqrt(sum/n); |
| | | } |
| | | |
| | | void normalize_array(float *a, int n) |
| | | { |
| | | int i; |
| | |
| | | } |
| | | } |
| | | |
| | | 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; |
| | |
| | | } |
| | | } |
| | | |
| | | int sample_array(float *a, int n) |
| | | { |
| | | float sum = sum_array(a, n); |
| | | scale_array(a, n, 1./sum); |
| | | float r = rand_uniform(0, 1); |
| | | int i; |
| | | for(i = 0; i < n; ++i){ |
| | | r = r - a[i]; |
| | | if (r <= 0) return i; |
| | | } |
| | | return n-1; |
| | | } |
| | | |
| | | int max_index(float *a, int n) |
| | | { |
| | | if(n <= 0) return -1; |
| | |
| | | return max_i; |
| | | } |
| | | |
| | | int rand_int(int min, int max) |
| | | { |
| | | int r = (rand()%(max - min + 1)) + min; |
| | | return r; |
| | | } |
| | | |
| | | // From http://en.wikipedia.org/wiki/Box%E2%80%93Muller_transform |
| | | #define TWO_PI 6.2831853071795864769252866 |
| | | float rand_normal() |
| | |
| | | } |
| | | */ |
| | | |
| | | float rand_uniform() |
| | | size_t rand_size_t() |
| | | { |
| | | return (float)rand()/RAND_MAX; |
| | | return ((size_t)(rand()&0xff) << 56) | |
| | | ((size_t)(rand()&0xff) << 48) | |
| | | ((size_t)(rand()&0xff) << 40) | |
| | | ((size_t)(rand()&0xff) << 32) | |
| | | ((size_t)(rand()&0xff) << 24) | |
| | | ((size_t)(rand()&0xff) << 16) | |
| | | ((size_t)(rand()&0xff) << 8) | |
| | | ((size_t)(rand()&0xff) << 0); |
| | | } |
| | | |
| | | float rand_uniform(float min, float max) |
| | | { |
| | | return ((float)rand()/RAND_MAX * (max - min)) + min; |
| | | } |
| | | |
| | | float **one_hot_encode(float *a, int n, int k) |