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#include <limits.h>
#include <float.h>
#include <math.h>
#include "misc.h"
/* general array stuff */
void fill_double_array ( double array[], int num_elements, double filler ) {
int i;
for (i=0;i<num_elements;i++) {
array[i] = filler;
}
}
void fill_int_array ( int array[], int num_elements, int filler ) {
int i;
for (i=0;i<num_elements;i++) {
array[i] = filler;
}
}
int max_int_array ( int array[], int num_elements ) {
int i, max = INT_MIN;
for (i=0;i<num_elements;i++) {
max = MAX( max, array[i] );
}
return max;
}
int min_int_array ( int array[], int num_elements ) {
int i, min = INT_MAX;
for (i=0;i<num_elements;i++) {
min = MIN( min, array[i] );
}
return min;
}
double max_double_array ( double array[], int num_elements ) {
int i;
double max = -DBL_MAX;
for (i=0;i<num_elements;i++) {
max = MAX( max, array[i] );
}
return max;
}
double min_double_array ( double array[], int num_elements ) {
int i;
double min = DBL_MAX;
for (i=0;i<num_elements;i++) {
min = MIN( min, array[i] );
}
return min;
}
void reset_zeroes ( double table[], int num_elements, double correction ) {
int i;
double small = DBL_EPSILON;
for ( i=0; i<num_elements; i++ ) {
if ( table[i] <= small ) table[i] = correction;
}
}
double sum_double_array ( double array[], int num_elements ) {
int i;
double t=0.0;
for ( i=0; i<num_elements; i++ ) {
t += array[i];
}
return t;
}
void div_double_array ( double array[], int num_elements, double divisor ) {
int i;
double small = DBL_EPSILON;
/* sanity check */
if (( divisor <= small ) && ( divisor >= 0.0 )) return;
for ( i=0; i<num_elements; i++ ) {
array[i] /= divisor;
}
}
void mult_double_array ( double array[], int num_elements, double mult ) {
int i;
for ( i=0; i<num_elements; i++ ) {
array[i] *= mult;
}
}
void ratio_double_arrays ( double denominator[], double numerator[],
int num_elements ) {
/* return the ratio of the elements in the arrays in denominator */
int i;
for(i=0;i<num_elements;i++) {
if ( numerator[i] > DBL_EPSILON ) denominator[i] /= numerator[i];
}
}
void scale_double_array ( double array[], int num_elements, double total ) {
int i;
double small = DBL_EPSILON;
double count;
/* scaling by division */
/* sanity check */
if ( total <= small ) return;
for ( i=0,count=0.0; i<num_elements; i++ ) {
count += array[i];
}
if ( count < small ) return;
count = total/count;
for ( i=0; i<num_elements; i++ ) {
array[i] *= count;
}
}
void scale_double_array1 ( double array[], int num_elements, double total ) {
/* want sum of array elements to be total, so add them and then subtract
sum/num_elements from each
*/
int i;
double sum, mean;
for ( i=0, sum=0.0; i<num_elements; i++ ) {
sum += array[i];
}
mean = sum / num_elements;
for ( i=0, sum=0.0; i<num_elements; i++ ) {
array[i] -= mean;
}
}
void log_double_array ( double array[], int num_elements ) {
int i;
for ( i=0; i<num_elements; i++ ) {
if ( array[i] > 0.0 ) array[i] = log ( array[i] );
}
}
void log10_double_array ( double array[], int num_elements ) {
int i;
for ( i=0; i<num_elements; i++ ) {
if ( array[i] > 0.0 ) array[i] = log10 ( array[i] );
}
}
void exp_double_array ( double array[], int num_elements ) {
int i;
for ( i=0; i<num_elements; i++ ) {
array[i] = exp ( array[i] );
}
}
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