winstead@faraday.ECE.CMU.EDU (Charles Holden Winstead) (03/25/91)
Hi everyone! I am a novice FORTRAN programmer, and these will probably be easy questions but so what, maybe someone else has some of the same. I program on a Sun Spark station, and would like to tell you the version number but I don't have access to the man pages. I apologize if these have been answered already. I'm not aware of a Freq.Asked.Ques for this group. Anyway, here are my questions, I appreciate any answers you may have. -Charles Winstead Carnegie Mellon 1. If I use write(*,*), and then redirect my output to a file when running, is there a way to write to the screen, say accessing standard error instead of standard output? 2. Are there function cosh, sinh, and conjugate for double complex? What are they? 3. Where do I get a list of all the intrinsic functions? As in the specific name differences for using a double precision one, or a double complex one. 4. Is there a way for a subroutine to know from which module it was called? i.e. was it called from line ## from main, or line # from subroutine foo? 5. What is a good FORTRAN book that tells me how to write efficient code, how fortran looks at data and pointers etc. I'd like a book that assumes that I know something about programming and want to be better. 6. If I divide a double complex by a double precision am I safe or should I somehow cast my dp variable as a dc one. Are there other pitfalls in mixing types? I know about mixed integer, but am not sure about double precision, float, complex, and double complex. 7. I just started using dbx. I've heard about toolbox. What is toolbox and what can it do? I tried downloading it, but it was too huge for my quota. Since I'm the only FORTRAN programmer around here, I'd need to be able to tell the administrator why I need 10 MEgs of space for toolbox before he'll do it. 8. Where do I get f2c, and a renumbering program?
khb@chiba.Eng.Sun.COM (Keith Bierman fpgroup) (03/26/91)
In article <1991Mar25.063607.7530@fs7.ece.cmu.edu> winstead@faraday.ECE.CMU.EDU (Charles Holden Winstead) writes: I am a novice FORTRAN programmer, and these will probably be easy questions ... Spark station, and would like to tell you the version number but I ^ SPARC, but spelling flames are absurd ;> (and I am a frequent offender) > access to the man pages If you have the compiler legally you have at least the online man pages! In general, it isn't very efficient to ask the thousands of folks on the net to key in parts of the manual for you (at least not globally efficient, it may be easy for you ;>). Seriously, please score a copy of the documentation, it will make your life easier in many ways. 1. If I use write(*,*), and then redirect my output to a file when running, is there a way to write to the screen, say accessing standard error instead of standard output? Yes. write(0,*) "foo" goes to standard error. ... 3. Where do I get a list of all the intrinsic functions? As in the specific name differences for using a double precision one, or a double complex one. Typically in Appendix B of the Sun FORTRAN Reference Manual. In general, it is best to avoid specific names, use the generic ones. 4. Is there a way for a subroutine to know from which module it was called? i.e. was it called from line ## from main, or line # from subroutine foo? Not in any socially approved way. The traceback mechanism clearly knows how, but it relies on knowing far more about the OS than is healthy. It isn't a public interface, because it is subject to much change. 5. What is a good FORTRAN book that tells me how to write efficient code, how fortran looks at data and pointers etc. I'd like a book that assumes that I know something about programming and want to be better. J. M. Levesque AND J. W. Williamson "A Guidebook to Fortran on Supercomputers" Academic Press San Diego, CA, 1989 Metcalf's "FORTRAN Optimization. and "Effective Fortran 77" Oxford Science Publications ISBN 0-19-853709 (I forget the isbn of the optimization book). Come to mind. 6. If I divide a double complex by a double precision am I safe or should I somehow cast my dp variable as a dc one. Are there other pitfalls in mixing types? Read the standard carefully. It is safe, if you and it agree. It is often the case that folks are surprised by what happens .... 8. Where do I get f2c, and a renumbering program? responses posted privately. cheers -- ---------------------------------------------------------------- Keith H. Bierman kbierman@Eng.Sun.COM | khb@chiba.Eng.Sun.COM SMI 2550 Garcia 12-33 | (415 336 2648) Mountain View, CA 94043
corrigan@weber.ucsd.edu (Michael J. Corrigan) (03/27/91)
In article <1991Mar25.063607.7530@fs7.ece.cmu.edu> winstead@faraday.ECE.CMU.EDU (Charles Holden Winstead) writes: }Hi everyone! } } I am a novice FORTRAN programmer, and these will probably be easy questions }but so what, maybe someone else has some of the same. I program on a Sun } .... }1. Answered already }2. Are there function cosh, sinh, and conjugate for double complex? What are } they? } If they are there they may well be called zcosh, although that would be an extension. I would suspect that zexp *is* there so you can roll your own. }3. Where do I get a list of all the intrinsic functions? As in the specific } name differences for using a double precision one, or a double complex one. } Since you don't have the man pages, try % foreach file ( /usr/lib/lib*77.a ) ar t $file end assuming that it is "f77" and you are using the C-shell and you will see some names that are sort of close to the names you should use, but you should have the manual/man pages. Remainder answered already.