added support of double datatype for logspace

2 files changed, 66 insertions, 0 deletions

diff --git a/src/c/elementaryFunctions/logspace/dlogspacea.c b/src/c/elementaryFunctions/logspace/dlogspacea.c
new file mode 100644
index 00000000..f8b283c6
--- /dev/null
+++ b/src/c/elementaryFunctions/logspace/dlogspacea.c
@@ -0,0 +1,40 @@
+/*
+    Scilab2C FOSSEE IIT Bombay 
+ */
+
+#include "logspace.h"
+#include<math.h>
+void dlogspacea(double *low_limit,int _row,double *up_limit,double range_num,double *out)
+{
+   int i,j,k;
+   double temp;
+   double step_iterate[_row];  // for each row the spacing between two values is different.
+   for(i=0;i<_row;i++)
+   {
+     step_iterate[i] = pow(10,((up_limit[i]-low_limit[i])/(range_num-1)));
+    
+         
+   }
+   for(j=0;j < _row;j++)
+   {
+     out[j] = pow(10,low_limit[j]);  // For every row first element is equal to 10 raise to  the first value of low_limit array
+     temp = out[j];
+     for(k=1;k < (double)range_num;k++ )
+      {
+          out[(_row*k)+j] = temp*step_iterate[j];  /* Output matrix positions for 3 X 5 matrix are [0 3 6 9 12;1 4 7 10 13;2 5 8 11 14] so (_row*k)+j) used*/
+          temp = out[(_row*k)+j];
+          if(k == (double)range_num-1 )
+         {
+            out[(_row*k)+j] = pow(10,((double)up_limit[j]));  // For every row Last value of output is equal to 10 raise to first value of up_limit array
+         }  
+
+      }
+     
+ 
+   }
+   
+   
+     
+
+}
+
diff --git a/src/c/elementaryFunctions/logspace/dlogspaces.c b/src/c/elementaryFunctions/logspace/dlogspaces.c
new file mode 100644
index 00000000..7970321b
--- /dev/null
+++ b/src/c/elementaryFunctions/logspace/dlogspaces.c
@@ -0,0 +1,26 @@
+/*
+    Scilab2C FOSSEE IIT Bombay 
+ */
+
+#include "logspace.h"
+#include<math.h>
+void dlogspaces(double low_limit,double up_limit,double range_num,double *out)
+{
+   int j;
+   double temp = pow(10,low_limit);
+   double step_iterate = pow(10,((up_limit-low_limit)/(range_num-1)));
+   out[0] = pow(10,low_limit);   //First value of output is equal to low_limit value
+   for(j=1; j<(double)range_num; j++) 
+   { 
+     out[j] = temp*step_iterate;
+     temp = out[j];
+     if(j == (double)range_num-1 )
+     {
+         out[j] = pow(10,((double)up_limit));  // Last value of output is equal to up_limit value
+     }
+   }
+   
+         
+
+}
+