Cleaning up multiply_inplace in cpu backend
Cleaning up multiply_inplace in cpu backend

bkloppenborg/arrayfire,merlin-ext/arrayfire,victorv/arrayfire,pentschev/arrayfire,marbre/arrayfire,jramapuram/arrayfire,9prady9/arrayfire,victorv/arrayfire,9prady9/arrayfire,merlin-ext/arrayfire,hshindo/arrayfire,pentschev/arrayfire,umar456/arrayfire,pentschev/arrayfire,marbre/arrayfire,victorv/arrayfire,9prady9/arrayfire,shehzan10/arrayfire,arrayfire/arrayfire,pombredanne/arrayfire,munnybearz/arrayfire,merlin-ext/arrayfire,marbre/arrayfire,pentschev/arrayfire,linan7788626/arrayfire,linan7788626/arrayfire,mrgloom/arrayfire,shehzan10/arrayfire,arrayfire/arrayfire,mrgloom/arrayfire,pombredanne/arrayfire,umar456/arrayfire,jramapuram/arrayfire,hshindo/arrayfire,mrgloom/arrayfire,hshindo/arrayfire,shehzan10/arrayfire,victorv/arrayfire,hshindo/arrayfire,bkloppenborg/arrayfire,mrgloom/arrayfire,munnybearz/arrayfire,jramapuram/arrayfire,linan7788626/arrayfire,arrayfire/arrayfire,bkloppenborg/arrayfire,ghisvail/arrayfire,pombredanne/arrayfire,ghisvail/arrayfire,ghisvail/arrayfire,merlin-ext/arrayfire,9prady9/arrayfire,bkloppenborg/arrayfire,linan7788626/arrayfire,shehzan10/arrayfire,umar456/arrayfire,marbre/arrayfire,munnybearz/arrayfire,arrayfire/arrayfire,pombredanne/arrayfire,ghisvail/arrayfire,umar456/arrayfire,jramapuram/arrayfire