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• Problem with SLATEC routine usage with gfortran

  - by user39461

  I am trying to compute the Bessel function of the second kind (Bessel_y) using the SLATEC's Amos library available on Netlib. Here is the SLATEC code I use. Below I have pasted my test program that calls SLATEC routine CBESY. PROGRAM BESSELTEST IMPLICIT NONE REAL:: FNU INTEGER, PARAMETER :: N = 2, KODE = 1 COMPLEX,ALLOCATABLE :: CWRK (:), CY (:) COMPLEX:: Z, ci INTEGER :: NZ, IERR ALLOCATE(CWRK(N), CY(N)) ci = cmplx (0.0, 1.0) FNU = 0.0e0 Z = CMPLX(0.3e0, 0.4e0) CALL CBESY(Z, FNU, KODE, N, CY, NZ, CWRK, IERR) WRITE(*,*) 'CY: ', CY WRITE(*,*) 'IERR: ', IERR STOP END PROGRAM And here is the output of the above program: CY: ( 5.78591091E-39, 5.80327020E-39) ( 0.0000000 , 0.0000000 ) IERR: 4 Ierr = 4 meaning there is some problem with the input itself. To be precise, the IERR = 4 means the following as per the header info in CBESY.f file: ! IERR=4, CABS(Z) OR FNU+N-1 TOO LARGE - NO COMPUTA- ! TION BECAUSE OF COMPLETE LOSSES OF SIGNIFI- ! CANCE BY ARGUMENT REDUCTION Clearly, CABS(Z) (which is 0.50) or FNU + N - 1 (which is 1.0) are not too large but still the routine CBESY throws the error message number 4 as above. The CY array should have following values for the argument given in above code: CY(1) = -0.4983 + 0.6700i CY(2) = -1.0149 + 0.9485i These values are computed using Matlab. I can't figure out what's the problem when I call CBESY from SLATEC library. Any clues? Much thanks for the suggestions/help. PS: if it is of any help, I used gfortran to compile, link and then create the SLATEC library file ( the .a file ) which I keep in the same directory as my test program above. shell command to execute above code: gfortran -c BesselTest.f95 gfortran -o a *.o libslatec.a a GD.

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• Order of mod_rewrite rules in .htaccess not being followed

  - by user39461

  We're trying to enforce HTTPS on certain URLs and HTTP on others. We are also rewriting URLs so all requests go through our index.php. Here is our .htaccess file. # enable mod_rewrite RewriteEngine on # define the base url for accessing this folder RewriteBase / # Enforce http and https for certain pages RewriteCond %{HTTPS} on RewriteCond %{REQUEST_URI} !^/(en|fr)/(customer|checkout)(.*)$ [NC] RewriteRule ^(.*)$ http://%{HTTP_HOST}%{REQUEST_URI} [L,R=301] RewriteCond %{HTTPS} off RewriteCond %{REQUEST_URI} ^/(en|fr)/(customer|checkout)(.*)$ [NC] RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301] # rewrite all requests for file and folders that do not exists RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php?query=$1 [L,QSA] If we don't include the last rule (RewriteRule ^(.*)$ index.php?query=$1 [L,QSA]), the HTTPS and HTTP rules work perfectly however; When we add the last three lines our other rules stop working properly. For example if we try to goto https:// www.domain.com/en/customer/login, it redirects to http:// www.domain.com/index.php?query=en/customer/login. It's like the last rule is being applied before the redirection is done and after the [L] flag indicating the the redirection is the last rule to apply.

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