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.
Assuming that libnagfl90.a, libnagfl90.so, libnagfl90_noblas.a and libnagfl90_noblas.so have been installed in a directory in the search path of the linker, such as /usr/lib, and that the module information files have been moved to /usr/local/lib/fl90_modules, then you may link to NAG fl90 in the following manner:
ifc -static -I/usr/local/lib/fl90_modules driver.f90 -lnagfl90 -lpthreador
ifc -I/usr/local/lib/fl90_modules driver.f90 -lnagfl90 -lpthreadwhere driver.f90 is your application program. You will be using the BLAS and LAPACK procedures provided by NAG. The first command will be using the NAG static library libnagfl90.a while the second command will be using the NAG dynamic library libnagfl90.so.
Alternatively, if you are using the MKL you need to refer to its Release Notes regarding which libraries to use during linking. For examples when you are using MKL version 5.2 installed in the default directory /opt/intel/mkl/lib/32, you can use:
ifc -static -I/usr/local/lib/fl90_modules driver.f90 -lnagfl90_noblas \ -L/opt/intel/mkl/lib/32 -lmkl_lapack -lmkl_def -lguide -lpthreador
ifc -I/usr/local/lib/fl90_modules driver.f90 -lnagfl90_noblas \ -L/opt/intel/mkl/lib/32 -lmkl_lapack -lmkl_def -lguide -lpthreadThe first command will be using the NAG static library libnagfl90_noblas.a and the MKL static libraries while the second command will be using the NAG dynamic library libnagfl90_noblas.so and the MKL dynamic libraries.
The -I/usr/local/lib/fl90_modules compiler option may not be needed if it has been included in the configuration file efc.cfg.
nagexample nag_gen_lin_sys_ex01will copy the example program and its data into the files nag_gen_lin_sys_ex01.f90 and nag_gen_lin_sys_ex01.dat in the current directory and process them to produce the example program results (using the compiled static library libnagfl90.a).
Alternatively you could use:
nagexample_dynamic nag_gen_lin_sys_ex01in this case you will be using the dynamic library libnagfl90.so.
If your installation contains the MKL and the NAG libraries libnagfl90_noblas.a or libnagfl90_noblas.so, you could use:
nagexample_noblas nag_gen_lin_sys_ex01or
nagexample_noblas_dynamic nag_gen_lin_sys_ex01The first command will be using the static library libnagfl90_noblas.a, while the second command will use the dynamic library libnagfl90_noblas.so.
A full on-line version of the NAG fl90 Manual is supplied in the form of Portable Document (PDF) files. Please see the Readme file on the distribution medium for further information.
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
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