NOTE: as of April 24, 2015, libsharp development has moved to Github (https://github.com/dagss/libsharp).
Libsharp is a collection of algorithms for efficient conversion between maps on the sphere and their spherical harmonic coefficients. It supports a wide range of pixelisations (including HEALPix, GLESP, and ECP). This library is a successor of libpsht (http://sourceforge.net/projects/libpsht). A scientific overview over the functionality is given in the paper available at http://arxiv.org/abs/1303.4945.
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