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Full Discussion: Trigonometry missing?
Top Forums Programming Trigonometry missing? Post 302540679 by pflynn on Thursday 21st of July 2011 10:29:43 AM
Old 07-21-2011
Not sure of what you mean, but most of the questions related to the use of the GNU Libc mathematical funcions have to do with linking time problems. To compile and link programs that use the functions from the mathematical library, you need to explicitly tell gcc (or g++) to link your program agaist the library:

Code:
gcc -o mathdemo mathdemo.c -lm

 

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nccgen(1)							      nccgen								 nccgen(1)

NAME
nccgen - source code analysis SYNOPSIS
nccgen file.c DESCRIPTION
nccgen is a program that can help you hack/study the source code of C programs. It will report which functions call which other functions, which functions are called by other functions and what global variables and members of structures are used by functions. This is useful if you want to analyse a program and eventually hack it. USAGE
To use nccgen find the Makefile of the program you want to analyse. In the Makefile locate the line which sets the C compiler. That is usually something like CC = gcc and you must change it to CC = nccgen -ncgcc -ncld -ncfabs. Then compile the application. It may be useful to also replace AR = ar with AR = nccar and LD = ld with LD = nccld to link nccout object files. OUTPUT
nccgen will produce a file with nccout extension for every C file analysed. Then you can use the viewer nccnav (with nccnav program.nccout ) to view this data and do your work. If the procedure of make links object files with "ar" or "ld" you should manually link the produced .nccout files. AUTHORS
The homepage of the ncc project is: http://students.ceid.upatras.gr/~sxanth/ncc/ SEE ALSO
The documentation included in the package. Linux 8 Mar 2003 nccgen(1)
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