=head1 NAME

compmat module - part of the Wise2 package

=head1 SYNOPSIS

This module contains the following objects

=over

=item CompMat


=back

=head1 DESCRIPTION

=head2 Object CompMat

=over

=item comp[26][26]

 Type [Score] Scalar No documentation

=item name

 Type [char *] Scalar  if any, could be NULL



=back

This object stores BLOSUM and PAM 
comparison matrices. It stores them as
scores: NB - this means probabilistically
we are talking about some arbitary base of
log which is really annoying.



=head2 Member functions of CompMat

=over

=item fail_safe_CompMat_access

&Wise2::CompMat::fail_safe_CompMat_access(cm,aa1,aa2)

  gives the fail form of the macro CompMat_AAMATCH which 
  checks that aa1 and a2 are sensible and that cm is not NULL.



  Argument cm           [UNKN ] compmat object [CompMat *]
  Argument aa1          [UNKN ] first amino acid [int]
  Argument aa2          [UNKN ] second amino acid [int]
  Return [UNKN ] Undocumented return value [Score]


=item write_Blast_CompMat

&Wise2::CompMat::write_Blast_CompMat(cm,ofp)

  writes a protien CompMat with a standard
  alphabet.



  Argument cm           [UNKN ] CompMat object [CompMat *]
  Argument ofp          [UNKN ] file to output [FILE *]
  Return [UNKN ] Undocumented return value [boolean]


=item read_Blast_file_CompMat

&Wise2::CompMat::read_Blast_file_CompMat(filename)

  Opens file, reads matrix, closes file.
  calls /read_Blast_CompMat for the actual format
  reading. Uses /openfile to open the file,
  so will open from config files.



  Argument filename     [UNKN ] Undocumented argument [char *]
  Return [UNKN ] Undocumented return value [CompMat *]


=item read_Blast_CompMat

&Wise2::CompMat::read_Blast_CompMat(ifp)

  reads a BLAST format matrix and
  allocates a new ComMat structure.



  Argument ifp          [UNKN ] Undocumented argument [FILE *]
  Return [UNKN ] Undocumented return value [CompMat *]


=item hard_link_CompMat

&Wise2::CompMat::hard_link_CompMat(obj)

  Bumps up the reference count of the object
  Meaning that multiple pointers can 'own' it



  Argument obj          [UNKN ] Object to be hard linked [CompMat *]
  Return [UNKN ] Undocumented return value [CompMat *]


=item alloc

&Wise2::CompMat::alloc(void)

  Allocates structure: assigns defaults if given 



  Return [UNKN ] Undocumented return value [CompMat *]


=item set_name

&Wise2::CompMat::set_name(obj,name)

  Replace member variable name
  For use principly by API functions



  Argument obj          [UNKN ] Object holding the variable [CompMat *]
  Argument name         [OWNER] New value of the variable [char *]
  Return [SOFT ] member variable name [boolean]


=item name

&Wise2::CompMat::name(obj)

  Access member variable name
  For use principly by API functions



  Argument obj          [UNKN ] Object holding the variable [CompMat *]
  Return [SOFT ] member variable name [char *]


=back