arithmetic subroutines

floating-point subroutines

library of subroutines

mathematical subroutines

microprogrammed subroutines

nest of subroutines

scientific subroutines

subroutines and multiple use programs

subroutines table

subroutines， arithmetic

subroutines， floating-point

subroutines， mathematical

subroutines， nest of

subroutines， scientific

subroutines， test

subroutines， violation

system subroutines

test programs and subroutines

User-written subroutines