Subsections

Older Changes

Changes between releases 2.20 and 3.00

* all input FITS files can now be compressed (with a .gz, .Z, .z, or .zip extension) and/or remotely located (with a ftp:// or http:// prefix). Version 3.14 (March 2009) or newer of CFITSIO is required for HEALPix 3.0.
* introduction of process_mask facility to compute the angular distance of valid pixels to the closest invalid pixels for a input binary mask,
* sky_ng_sim now allows the computation of the spatial derivatives of the non Gaussian map being produced, and the output of the alm coefficients of that map,
* anafast now allows the pro/down-grading of the input mask to match the resolution of the map(s) being analyzed.

Changes between releases 2.14 and 2.20

* faster synfast, anafast, smoothing thanks to libpsht routines.
* most facilities can handle maps with ${N_{\rm side}}> 8192$, ie more than 805,306,368 pixels.
See ``F90 Subroutines Overview'' for details.

Changes between releases 2.13 and 2.14

* In synfast facility, a numerical bug affecting the accuracy of the Stokes parameter derivatives $\partial X/\partial\theta$, $\partial^2 X/(\partial\theta\partial\phi\sin\theta)$, $\partial^2 X/\partial \theta^2$, for X=Q,U has been corrected. See this appendix for details.

Changes between releases 2.0 and 2.1

* The anafast facility can now compute the cross-correlations of two different maps.
* The sky_ng_sim facility (Rocha et al, 2005), to produce non-Gaussian CMB temperature maps, has been added.

Changes between releases 1.2 and 2.0

* faster implementation of alm related facilities, generalization of OpenMP parallelization, and availability of MPI parallelized routines (see mpi_* routines in Fortran90 Subroutines Overview document).
* introduction of alteralm facility to modify and/or rotate the spherical harmonics coefficients alm and greater flexibility for constraining alm in synfast
* single and double precision implementation of most facilities (see Input and Output Precision page [*])

Version 3.11, 2013-04-24