In addition, NAG recommends that before calling any library routine you should read the following reference material (see Section 5):
(a) Essential Introduction
(b) Chapter Introduction
(c) Function Document
This implementation is intended specifically for Microsoft Visual C++ Release 7.0. An alternative DLL implementation is available that is compatible with Visual C++ Release 6; CLDLL074Z.
cl /MD driver.c nagc.libwhere driver.c is your application program and targetdir is the installation directory.
The "/MD" option should be used to specify linking with MSVCRT.LIB.
Alternatively, if you wish to link to the version of the NAG C Library that uses the Intel® Math Kernel Library 5.2 for Windows (MKL) which is included in this product, you should compile your program in the following manner:
cl /MD driver.c nagc-mkl.lib
The installation procedure will have set the system environment variables PATH, INCLUDE and LIB for you. By default, the system Path variable is concatenated with your Path environment variable. If you have set your own LIB environment variable, this must include the string "%LIB%" in the search list in order to pick up the system LIB. Similarly your INCLUDE environment variable should have "%INCLUDE%" in the search list.
In the Project Properties window, select "C++" and "Preprocessor", and specify the location of the NAG C Library include directory (default is C:\Program Files\Numerical Algorithms Group\CLDLL074Y\include).
In the Project Properties window, select "Linker" and "Input", add to "Additional Dependencies" the location of the NAG C import library (default is C:\Program Files\Numerical Algorithms Group\CLDLL074Y\lib\nagc.lib).
Alternatively you may set the appropriate Visual Studio options. From the Visual Studio "Tools" menu, select "Options/Projects/VC++ Directories" and set
The .\bin subdirectory of the library directory must be included in your PATH to run applications.
The .\mkl\bin subdirectory of the library directory must be included in your PATH to run applications linked with MKL.
The installation script will have attempted to do this, and set the INCLUDE and LIB environment variables for you, but in some cases manual intervention may be required. This may be effected using the Control Panel/System/Environment tab on NT, and the "Environment Variables" button in the Control Panel/System/Advanced tab on 2000 and XP.
If your machine has more than one processor and you are using Intel MKL, then it is recommended that you set the environment variable OMP_NUM_THREADS to the number of available processors, e.g.
set OMP_NUM_THREADS=2This will enable the Intel MKL BLAS to make use of the extra processor(s) and will thus speed up the computation of many of the NAG library routines. On most systems this may be effected using the Control Panel/System/Environment tab.
Normally you are advised to use NAG_ALLOC to allocate memory and NAG_FREE to deallocate memory, however in mixed language programming, these C preprocessor macros are not available. Instead you may call the x04bbc and x04bdc functions directly to allocate and deallocate memory.
The function x04bbc is the NAG memory allocator in this implementation.
Pointer NAG_CALL x04bbc(size_t size);
The function x04bdc is the NAG memory deallocator.
void NAG_CALL x04bdc( void ** );
Note: Within a number of NAG C Library functions, memory is allocated internally and returned to the calling function. This allocated memory contains information that is potentially useful to the user. Consequently freeing this memory has been left to user discretion. You are advised to use NAG_FREE or x04bdc to do this.
For an example of the use of NAG_FREE, please refer to the g05eac example program.
If the first argument to the script is "-mkl", the example program is linked with the version of the NAG C Library that uses the MKL BLAS and LAPACK. If MKL is not installed in the default NAG C Library folder, the environment variable MKLDIR must be set to the root directory of the MKL libraries, i.e. the directory that contains the lib and bin directories.
The example program concerned is specified by the argument to NAGEX.BAT, e.g.
nagex c06eacwill copy the example program and its data into the files c06eafe.c and c06eafe.d in the current directory and process them to produce the example program results, which are placed in file c06eace.res in the current folder.
The example programs supplied to a site in machine-readable form have been modified as necessary so that they are suitable for immediate execution. 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 static library, using the NAG BLAS and LAPACK functions. Running the examples with the shared library or non-NAG BLAS or LAPACK may give slightly different results.
ZHPEVD ZUNMBR
s10aac E(1) = 1.8500e+1
s10abc fail.code = NE_REAL_ARG_GT if X > 7.080e+2
s10acc fail.code = NE_REAL_ARG_GT if X > 7.080e+2
s13aac X(hi) = 7.083e+2
s13acc X(hi) = 1.0e+16
s13adc X(hi) = 1.0e+17
s14aac fail.code = NE_REAL_ARG_GT if X > 1.70e+2
fail.code = NE_REAL_ARG_LT if X < -1.70e+2
fail.code = NE_REAL_ARG_TOO_SMALL if ABS(X) < 2.23e-308
s14abc fail.code = NE_REAL_ARG_GT if X > 2.55e+305
s17acc fail.code = NE_REAL_ARG_GT if X > 1.0e+16
s17adc fail.code = NE_REAL_ARG_GT if X > 1.0e+16
fail.code = NE_REAL_ARG_TOO_SMALL if X <= 2.23e-308
s17aec fail.code = NE_REAL_ARG_GT if ABS(X) > 1.0e+16
s17afc fail.code = NE_REAL_ARG_GT if ABS(X) > 1.0e+16
s17agc fail.code = NE_REAL_ARG_GT if X > 1.038e+2
fail.code = NE_REAL_ARG_LT if X < -5.6e+10
s17ahc fail.code = NE_REAL_ARG_GT if X > 1.041e+2
fail.code = NE_REAL_ARG_LT if X < -5.6e+10
s17ajc fail.code = NE_REAL_ARG_GT if X > 1.041e+2
fail.code = NE_REAL_ARG_LT if X < -1.8e+9
s17akc fail.code = NE_REAL_ARG_GT if X > 1.041e+2
fail.code = NE_REAL_ARG_LT if X < -1.8e+9
s18adc fail.code = NE_REAL_ARG_TOO_SMALL if 0.0D+00 < X <= 2.23e-308
s18aec fail.code = NE_REAL_ARG_GT if ABS(X) > 7.116e+2
s18afc fail.code = NE_REAL_ARG_GT if ABS(X) > 7.116e+2
s18cdc fail.code = NE_REAL_ARG_TOO_SMALL if 0.0D+00 < X <= 2.23e-308
s19aac fail.code = NE_REAL_ARG_GT if ABS(X) >= 4.95000e+1
s19abc fail.code = NE_REAL_ARG_GT if ABS(X) >= 4.95000e+1
s19acc fail.code = NE_REAL_ARG_GT if X > 9.9726e+2
s19adc fail.code = NE_REAL_ARG_GT if X > 9.9726e+2
s21bcc fail.code = NE_REAL_ARG_LT if an argument < 1.579e-205
fail.code = NE_REAL_ARG_GE if an argument >= 3.774e+202
s21bdc fail.code = NE_REAL_ARG_LT if an argument < 2.820e-103
fail.code = NE_REAL_ARG_GT if an argument > 1.404e+102
X01AAC (pi) = 3.14159265358979323846e+00 X01ABC (gamma) = 0.5772156649015328606e+00
The basic parameters of the model
X02BHC = 2 X02BJC = 53 X02BKC = -1021 X02BLC = 1024 X02DJC = TRUEDerived parameters of the floating-point arithmetic
X02AJC = 0x3ca0000000000001 ( 1.11022302462516e-16 ) X02AKC = 0x0010000000000000 ( 2.22507385850721e-308 ) X02ALC = 0x7fefffffffffffff ( 1.79769313486231e+308 ) X02AMC = 0x0010000000000000 ( 2.22507385850721e-308 ) X02ANC = 0x0010000000000000 ( 2.22507385850721e-308 )Parameters of other aspects of the computing environment
X02AHC = 0x43f0000000000000 ( 1.84467440737095e+19 ) X02BBC = 2147483647 X02BEC = 15 X02DAC = FALSE
A full on-line version of the NAG C Library Manual is supplied in the form of Portable Document Format (PDF) files, with an HTML index, in the doc\manual07\pdf directory. The introductory material is also provided as HTML files in the doc\manual07\html\genint directory.
A main index file has been provided (doc\manual07\html\mark07.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.
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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 CLDLL074Y).
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