do calculation of arrangement
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 \ No newline at end of file