I am familiar with C++ templates. I said C, not C++ with all its baggage.
But enough! Have fun! Make as many debater's points as you like. Perhaps you can work in the dawn horse, eohippus, too. I shall not comment further. --jg On 10/7/12, Charles Mills <[email protected]> wrote: > Are you familiar with C++ templates? One could define, and some compiler > vendor libraries define, functions which work as you describe. > -- > Sent from my mobile phone. Please excuse my brevity. > > Charles > > John Gilmore <[email protected]> wrote: > > I am familiar with the inline option. What it does is not what I had > in mind. I should have been more specific. I meant independent C > implementations. IBM C and IBM PL/I share the same optimizing and > code-generation machinery. > > A [simple] mathematical example will make the appropriate distinctions > clearer. > > Consider > > declare i signed binary fixed(63,0), ((x, y) real, z complex) decimal > float(16), abs builtin ; > . . . > i = abs(i) ; /* example 1 */ > x = abs(x) ; /* example 2 */ > y = abs(z) ; /* example 3 */ > > Example 1 and example 2 are always evaluated by trivial compiled code. > They reduce conceptually to a single machine instruction. > > Example 3 is instead evaluated by a library subroutine. Why? Recall > that for complex > z = a + bi, abs(z) = sqrt(a**2 + b**2). > > Here, as usual, generic functions employing syntactically identical > constructs are evaluated in datatype- and domain-specific ways. (All > this is of course irrelevant for FORTRAN-like C, which does not have > generic functions.) > > John Gilmore, Ashland, MA 01721 - USA > > _____________________________________________ > > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
