Operations by Subroutine
Functions may be specified in source code either as operators or as function calls; the compiler may generate either form as instructions or as a subroutine call.
A function can be compiled inline if the code is short:
abs(x) --> (if (>= x 0) x (- x))or the code generator can generate a special instruction sequence, e.g. to float an integer.
An operator can be compiled as a subroutine call if the code is longer.
X**Y --> qq8rtor(x,y) cout << "Hello\n"On small machines without floating point hardware, all floating ops may be done by subroutine calls.