In reply to dave_59:
Cheers @dave_59, I guess code flexibility was the right term that I was looking for (and not efficiency). I have got this one for N 2d arrays with different data types. Note that I have used generic names here in code snippet. In my actual use-case there is no patterns in data-type/signal names.
If you spot any further code flexibility, please let me know. Cheers.
type1_t [DIM_X1_MAX-1:0][[DIM_Y1_MAX-1:0] vec1;
type1_t [DIM_Y1_MAX-1:0][[DIM_X1_MAX-1:0] swapped_vec1;
type2_t [DIM_X2_MAX-1:0][[DIM_Y2_MAX-1:0] vec2;
type2_t [DIM_Y2_MAX-1:0][[DIM_X2_MAX-1:0] swapped_vec2;
// ...
typen_t [DIM_Xn_MAX-1:0][[DIM_Yn_MAX-1:0] vecn;
typen_t [DIM_Yn_MAX-1:0][[DIM_Xn_MAX-1:0] swapped_vecn;
`define F_SWAP_VECn(DTYPE,XPARAM,YPARAM,FUNC_NAME) \
function DTYPE [YPARAM-1:0][[XPARAM-1:0] FUNC_NAME; \
DTYPE [XPARAM-1:0][[YPARAM-1:0] in; \
foreach(in[i,j]) FUNC_NAME[j][i]=in[i][j]; \
endfunction
`F_SWAP_VECn(type1_t,DIM_X1_MAX,DIM_Y1_MAX,swap_vec1)
`F_SWAP_VECn(type2_t,DIM_X2_MAX,DIM_Y2_MAX,swap_vec2)
// ...
`F_SWAP_VECn(typen_t,DIM_Xn_MAX,DIM_Yn_MAX,swap_vecn)
assign swapped_vec1 = swap_vec1(vec1);
assign swapped_vec2 = swap_vec2(vec2);
// ...
assign swapped_vecn = swap_vecn(vecn);