Diff: arg_useful.h

Revision:

0:fe553d45f0b2

Child:

1:0f4bc913a3cc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/arg_useful.h	Sat Apr 18 09:27:00 2015 +0000
@@ -0,0 +1,95 @@
+#ifndef _ARG_USEFUL_20150418_1411_
+#define _ARG_USEFUL_20150418_1411_
+
+//at matrix, place is from left to right and next, from up to down
+
+/** arg_subs :
+ *
+ * @bref substitution of arrangements
+ * @param arg_to arrangement of what you want to submitition
+ * @param arg_from arrangement of original
+ * @param all_ele numbers of elements
+ */
+void arg_subs(float *arg_to,float *arg_from,int all_ele)
+{
+    for(int i=0; i<all_ele; i++)arg_to[i]=arg_from[i];
+}
+
+/** arg_swap :
+ *
+ * @bref swap two arrangements
+ * @param arg_a arrangement of what you want to swap
+ * @param arg_b (same as arg_a)
+ * @param all_ele numbers of elements
+ */
+void arg_swap(float *arg_a,float *arg_b, int all_ele)
+{
+    float c;
+    for(int i=0; i<all_ele; i++){
+        c=arg_a[i];
+        arg_a[i]=arg_b[i];
+        arg_b[i]=c;
+    }
+}
+
+/** arg_plus :
+ *
+ * @bref do addition of two matrix a[row][col]
+ * @param ans matrix of answer 
+ * @param arg_a matrix of what you want to add
+ * @param arg_b (same as arg_a)
+ * @param row numbers of elements of row
+ * @param col numbers of elements of col
+ */
+void arg_plus(float *ans,float *arg_a,float *arg_b,int row,int col)
+{
+    for(int i=0; i<row; i++){
+        for(int j=0; j<col; j++)ans[i*col+j] = arg_a[i*col+j]+arg_b[i*col+j];
+    }
+}
+
+/** arg_minus :
+ *
+ * @bref do subtraction of two matrix like a-b
+ * @param ans matrix of answer 
+ * @param arg_a matrix of what you want to minus
+ * @param arg_b (same as arg_a)
+ * @param row numbers of elements of row
+ * @param col numbers of elements of col
+ */
+void arg_minus(float *ans,float *arg_a,float *arg_b,int row,int col)
+{
+    for(int i=0; i<row; i++){
+        for(int j=0; j<col; j++)ans[i*col+j] = arg_a[i*col+j]-arg_b[i*col+j];
+    }
+}
+
+/** arg_multi :
+ *
+ * @bref do multiplication of two matrix like a*b
+ * @param ans matrix of answer 
+ * @param arg_a matrix of what you want to minus
+ * @param row_a numbers of elements of row of arg_a
+ * @param col_b numbers of elements of col of arg_a
+ * @param arg_b (same as arg_a)
+ * @param row_b numbers of elements of row of arg_b
+ * @param col_b numbers of elements of col of arg_b
+ * @retval 0 you can multiplication
+ * @retval -1 you can't multiplication
+ */
+int arg_multi(float *ans,float *arg_a,int row_a,int col_a,float *arg_b,int row_b,int col_b)
+{
+    if(col_a!=row_b)return -1;
+    else{
+        for(int i=0; i<row_a; i++){
+            for(int j=0; j<col_b; j++){
+                ans[i*col_b+j]=0;
+                for(int k=0; k<col_a; k++)ans[i*col_b+j]+=arg_a[i*col_a+k]*arg_b[j+col_b*k];
+            }
+        }
+    }
+    return 0;
+}
+
+
+#endif
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