checkpoint

This commit is contained in:
Joseph Redmon
2014-11-18 13:51:04 -08:00
parent b13ad6d5fd
commit d407bffde9
23 changed files with 194 additions and 96 deletions

View File

@ -1,14 +1,51 @@
#include "utils.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <float.h>
#include "utils.h"
char *find_replace(char *str, char *orig, char *rep)
{
static char buffer[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';
sprintf(buffer+(p-str), "%s%s", rep, p+strlen(orig));
return buffer;
}
float sec(clock_t clocks)
{
return (float)clocks/CLOCKS_PER_SEC;
}
void top_k(float *a, int n, int k, int *index)
{
int i,j;
float thresh = FLT_MAX;
for(i = 0; i < k; ++i){
float max = -FLT_MAX;
int max_i = -1;
for(j = 0; j < n; ++j){
float val = a[j];
if(val > max && val < thresh){
max = val;
max_i = j;
}
}
index[i] = max_i;
thresh = max;
}
}
void error(char *s)
{
fprintf(stderr, "Error: %s\n", s);
@ -79,7 +116,7 @@ char *fgetl(FILE *fp)
}
int curr = strlen(line);
while(line[curr-1]!='\n'){
size *= 2;
line = realloc(line, size*sizeof(char));
@ -121,34 +158,34 @@ list *parse_csv_line(char *line)
int count_fields(char *line)
{
int count = 0;
int done = 0;
int count = 0;
int done = 0;
char *c;
for(c = line; !done; ++c){
done = (*c == '\0');
if(*c == ',' || done) ++count;
}
return count;
for(c = line; !done; ++c){
done = (*c == '\0');
if(*c == ',' || done) ++count;
}
return count;
}
float *parse_fields(char *line, int n)
{
float *field = calloc(n, sizeof(float));
char *c, *p, *end;
int count = 0;
int done = 0;
for(c = line, p = line; !done; ++c){
done = (*c == '\0');
if(*c == ',' || done){
*c = '\0';
field[count] = strtod(p, &end);
if(p == c) field[count] = nan("");
if(end != c && (end != c-1 || *end != '\r')) field[count] = nan(""); //DOS file formats!
p = c+1;
++count;
}
}
return field;
float *field = calloc(n, sizeof(float));
char *c, *p, *end;
int count = 0;
int done = 0;
for(c = line, p = line; !done; ++c){
done = (*c == '\0');
if(*c == ',' || done){
*c = '\0';
field[count] = strtod(p, &end);
if(p == c) field[count] = nan("");
if(end != c && (end != c-1 || *end != '\r')) field[count] = nan(""); //DOS file formats!
p = c+1;
++count;
}
}
return field;
}
float sum_array(float *a, int n)