NAG recommends that you read the following minimum reference material before calling any library procedure:
(a) Essential Introduction
(b) Chapter Introduction
(c) Procedure Document
(d) Implementation-specific Users' Note
Items (a), (b) and (c) are included in the NAG fl90 Manual; item (d) is this document which is provided in HTML form.
By default [INSTALL_DIR] (see Installer's Note (in.html)) is /opt/NAG/fnlux04del or /usr/local/NAG/fnlux04del depending on your system; however it could have been changed by the installer. To identify [INSTALL_DIR] for this installation:
ifort -I[INSTALL_DIR]/nagfl90_modules driver.f90 \ [INSTALL_DIR]/lib/libnagfl90_mkl.a \ -L[INSTALL_DIR]/mkl_32 -lmkl_lapack -lmkl_ia32 -lguidewhere driver.f90 is your application program;
or
ifort -I[INSTALL_DIR]/nagfl90_modules driver.f90 \ [INSTALL_DIR]/lib/libnagfl90_mkl.so \ -L[INSTALL_DIR]/mkl_32 -lmkl_lapack64 -lmkl -lguideif the shareable library is required.
However, if you prefer to link to a version of the NAG fl90 library which does not require the use of the MKL library, you may wish to use the self-contained libraries as follows:
ifort -I[INSTALL_DIR]/nagfl90_modules driver.f90 \ [INSTALL_DIR]/lib/libnagfl90_nag.aor
ifort -I[INSTALL_DIR]/nagfl90_modules driver.f90 \ [INSTALL_DIR]/lib/libnagfl90_nag.soif the shareable library is required.
Please note that in all the above compiler invocations
Please note that using a self-contained library may result in some degradation in the performance of your application.
If your application has been linked with one of the NAG shareable libraries then the environment variable LD_LIBRARY_PATH must be extended to allow run time linkage.
In the C shell type:
setenv LD_LIBRARY_PATH [INSTALL_DIR]/lib:${LD_LIBRARY_PATH}:[INSTALL_DIR]/mkl_32to extend LD_LIBRARY_PATH.
In the Bourne shell, type:
LD_LIBRARY_PATH=[INSTALL_DIR]/lib:${LD_LIBRARY_PATH}:[INSTALL_DIR]/mkl_32 export LD_LIBRARY_PATHto extend LD_LIBRARY_PATH.
Please note that the order of the libraries in LD_LIBRARY_PATH is important.
Please note also that [INSTALL_DIR]/mkl_32 is needed as part of the environment variable LD_LIBRARY_PATH only if you are using libnagfl90_mkl.so and the MKL shareable libraries.
To use the the NAG fl90 Library and the supplied MKL libraries, you may link in the following manner:
ifort -I[INSTALL_DIR]/nagfl90_modules driver.f90 \ -lnagfl90_mkl -lmkl_lapack64 -lmkl -lguideTo use the static library libnagfl90_mkl.a you need the -Bstatic loader flag to switch static binding on:
ifort -I[INSTALL_DIR]/nagfl90_modules driver.f90 \ -Bstatic -lnagfl90_mkl -lmkl_lapack -lmkl_ia32 -Bdynamic -lguide
However, if you prefer to link to a version of the NAG library which does not require the use of the MKL library, you may wish to use the self-contained libraries as follows:
ifort -I[INSTALL_DIR]/nagfl90_modules driver.f90 -lnagfl90_nagThis will usually link to the shareable library in preference to the static library if both the libraries are at the same location.
To use the static library libnagfl90_nag.a you need the -Bstatic loader flag to switch static binding on:
ifort -I[INSTALL_DIR]/nagfl90_modules driver.f90 -Bstatic -lnagfl90_nagPlease note that in all the above compiler invocations
Please note that using a self-contained library may result in some degradation in the performance of your application.
If your application has been linked with one of the NAG shareable libraries then the environment variable LD_LIBRARY_PATH must be extended to allow run time linkage.
In the C shell type:
setenv LD_LIBRARY_PATH [INSTALL_DIR]/lib:${LD_LIBRARY_PATH}:[INSTALL_DIR]/mkl_32to extend LD_LIBRARY_PATH.
In the Bourne shell, type:
LD_LIBRARY_PATH=[INSTALL_DIR]/lib:${LD_LIBRARY_PATH}:[INSTALL_DIR]/mkl_32 export LD_LIBRARY_PATHto extend LD_LIBRARY_PATH.
Please note that the order of the libraries in LD_LIBRARY_PATH is important.
Please note also that [INSTALL_DIR]/mkl_32 is needed as part of the environment variable LD_LIBRARY_PATH only if you are using libnagfl90_mkl.so and the MKL shreable libraries.
The example programs are most easily accessed by one of the commands
Each command will provide you with a copy of an example program (and its data, if any), compile the program and link it with the appropriate libraries (showing you the compile command so that you can recompile your own version of the program). Finally, the executable program will be run, presenting its output to stdout.
The example program concerned is specified by the argument to the command, e.g.
nagfl90_example nag_nlp_ex01will copy the example program and its data into the files nag_nlp_ex01.f90 and nag_nlp_ex01.dat in the current directory and process them to produce the example program results (using the compiled library libnagfl90_nag.a).
The example programs are supplied in machine-readable form. They are suitable for immediate usage. Note that the distributed example programs are those used in this implementation and may not correspond exactly with the programs published in the manual. The distributed example programs should be used in preference wherever possible.
The distributed example results are those obtained with the NAG self-contained static library libnagfl90_nag.a, (using the NAG BLAS and LAPACK routines). Running the examples with the MKL may give slightly different results.
nag_gamma error%code = 201 if x > 1.70E+2 error%code = 202 if abs(x) < 2.23E-308 error%code = 203 if x < -1.70E+2 nag_log_gamma error%code = 201 if x > 2.55E+305 nag_erfc x(hi) = 2.66E+1 x(low) = -6.25E+0 nag_erf x(hi) = 6.25E+0 nag_bessel_y0 error%code = 201 if x > 1.0E+16 nag_bessel_y1 error%code = 202 if x > 1.0E+16 error%code = 201 if 0.0 < x <= 2.23E-308 nag_bessel_y error%code = 201 if abs(z) < 3.93E-305 error%code = 202 if abs(z) or NU+N-1 > 1.07E+9 error%code = 203 if abs(z) or NU+N-1 > 3.27E+4 nag_bessel_j0 error%code = 201 if abs(x) > 1.0E+16 nag_bessel_j1 error%code = 201 if abs(x) > 1.0E+16 nag_bessel_j error%code = 201 if imag(z) > 7.00E+2 error%code = 202 if abs(z) or NU+N-1 > 1.07E+9 error%code = 203 if abs(z) or NU+N-1 > 3.27E+4 nag_bessel_k1 error%code = 201 if 0.0 < x <= 2.23E-308 nag_bessel_k error%code = 201 if abs(z) < 3.93E-305 error%code = 202 if abs(z) or NU+N-1 > 1.07E+9 error%code = 203 if abs(z) or NU+N-1 > 3.27E+4 nag_bessel_i0 error%code = 201 if abs(x) > 7.116E+2 nag_bessel_i1 error%code = 201 if abs(x) > 7.116E+2 nag_bessel_i error%code = 201 if real(z) > 7.00E+2 error%code = 202 if abs(z) or NU+N-1 > 1.07E+9 error%code = 203 if abs(z) or NU+N-1 > 3.27E+4 nag_ell_rd error%code = 201 if an argument < 1.579E-205 error%code = 202 if an argument < 3.774E+202 nag_ell_rj error%code = 201 if an argument < 2.820E-103 error%code = 202 if an argument < 1.404E+102 nag_airy_ai error%code = 201 if z is REAL and z > 1.038E+2 error%code = 202 if z is REAL and z < -1.8E+9 error%code = 203 if abs(z) > 1.02E+3 error%code = 204 if abs(z) > 1.04E+6 nag_airy_bi error%code = 201 if z is REAL and z > 1.041E+2 error%code = 202 if z is REAL and z < -1.8E+9 error%code = 203 if abs(z) > 1.02E+3 error%code = 204 if abs(z) > 1.04E+6 nag_kelvin_ber error%code = 201 if abs(x) > 49.50 nag_kelvin_bei error%code = 201 if abs(x) > 49.50 nag_kelvin_ker error%code = 201 if x > 9.9726E+2 nag_kelvin_kei error%code = 201 if x > 9.9726E+2
A main index file has been provided (nagdoc_fn04/fn/html/library_contents/c00s08_libcon_fn04.html) which contains a fully linked contents document pointing to all the available PDF (and where available HTML) files. Use your HTML browser to navigate from here.
In addition the following are provided:
The NAG Response Centres are available for general enquiries from all users and also for technical queries from sites with an annually licensed product or support service.
The Response Centres are open during office hours, but contact is possible by fax, email and phone (answering machine) at all times.
When contacting a Response Centre it helps us deal with your enquiry quickly if you can quote your NAG site reference and NAG product code (in this case FNLUX04DEL).
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http://www.nag.co.uk/, http://www.nag.com/ or http://www.nag-j.co.jp/
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