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Diffstat (limited to 'astro/pal/pkg-descr')
| -rw-r--r-- | astro/pal/pkg-descr | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/astro/pal/pkg-descr b/astro/pal/pkg-descr new file mode 100644 index 000000000000..b882427b2962 --- /dev/null +++ b/astro/pal/pkg-descr @@ -0,0 +1,12 @@ +The PAL library is a partial re-implementation of Pat Wallace's popular SLALIB +library written in C using a Gnu GPL license and layered on top of the IAU's +SOFA library (or the BSD-licensed ERFA) where appropriate. PAL attempts to stick +to the SLA C API where possible although palObs() has a more C-like API than the +equivalent slaObs() function. In most cases it is enough to simply change the +function prefix of a routine in order to link against PAL rather than SLALIB. +Routines calling SOFA use modern notation and precession models so will return +slightly different answers than native SLALIB. PAL functions not available in +SOFA were ported from the Fortran version of SLALIB that ships as part of the +Starlink software and uses a GPL licence. + +WWW: https://github.com/Starlink/pal |