Here is a list of all documented modules with brief descriptions:

[detail level 12]

Mcstgeo	Constants for orientation and stretching of map
Mdcstgeo	Constants for orientation and stretching of map
►Mpesg	Suite of routines to perform the 2-parameter family of Extended Schmidt Gnomonic (ESG) regional grid mappings, and to optimize the the two parameters, A and K, of those mappings for a given rectangular domain's principal (median) semi-arcs with respect to a domain-averaged measure of distortion
Cbestesg_geo
Cbestesg_map
Cgaulegh
Cget_edges
Cget_meanq
Cget_qofv
Cget_qx
Cgtoxm_ak_dd
Cgtoxm_ak_rr
Cguessak_geo
Cguessak_map
Chgrid_ak
Chgrid_ak_dc
Chgrid_ak_dd
Chgrid_ak_rc
Chgrid_ak_rr
Cxctoxm_ak
Cxctoxs
Cxmtog_ak_dd
Cxmtog_ak_rr
Cxmtoxc_ak
Cxmtoxt
Cxstoxc
Cxstoxt
Cxttoxm
Cxttoxs
Czmtozt
Czttozm
►Mpfun	This module is for evaluating several useful real-valued functions that are not always available in Fortran compilers
Cahav
Cahavh
Catanh
Cgd
Cgdi
Chav
Chavh
Csech
Csechs
Csinhox
Csinhoxm
Csinox
Csinoxm
Mpietc	Some of the commonly used constants (pi etc) mainly for double-precision subroutines
Mpkind	Standard integer, real, and complex single and double precision kinds
►Mpmat2	Routines dealing with the operations of banded matrices
Cavco
Ccad1b
Ccad2b
Cclipb
Ccsb1b
Ccsb2b
Cdfco
Cdfco2
Cl1ubb
Cl1ueb
Cldltb
Cldub
Clinbv
Cltdlbv
Cu1lbv
Cu1lbx
Cu1lby
Cu1lvb
Cu1lxb
Cu1lyb
Cudlb
Cudlbv
Cudlbx
Cudlby
Cudlvb
Cudlxb
Cudlyb
Cwrtb
►Mpmat4	Module for handy vector and matrix operations in Euclidean geometry
Cabsv
Caxial
Caxtoq
Caxtorot
Ccorral
Ccross_product
Cctoz
Cdet
Cdiag
Cdlltoxy
Cexpmat
Cgram
Chav
Chuarea
Cidentity
Cmobius
Cmobiusi
Cmulqq
Cnormalize
Cnormalized
Corthogonalized
Couter_product
Cqtoax
Cqtorot
Cqtospin
Crottoax
Crottoq
Crowops
Csarea
Csetem
Csetmobius
Cspintoq
Ctrace
Ctriple_product
Cznfun
Czntay
Cztoc
►Mpmat5	Utility routines for orienting the globe and basic geographical mappings
Cctoc_schm
Cctog
Cctogr
Cframetwist
Cgrtoc
Cgtoc
Cgtoframe
Cininmap
Cinivmap
Cparaframe
Cplctoc
Cplrot
Cplroti
►Mpsym2	A suite of routines to perform the eigen-decomposition of symmetric 2*2 matrices and to deliver basic analytic functions, and the derivatives of these functions, of such matrices
Cchol2
Ceigensym2
Cexpsym2
Cexpsym2d_e
Cexpsym2d_t
Cid2222
Cinvsym2
Clogsym2
Csqrtsym2
Csqrtsym2d_e
Csqrtsym2d_t
Mutils	Module that contains general utility routines