funcs.h

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/************************************************************
 * HMMER - Biological sequence analysis with profile HMMs
 * Copyright (C) 1992-2003 Washington University School of Medicine
 * All Rights Reserved
 * 
 *     This source code is distributed under the terms of the
 *     GNU General Public License. See the files COPYING and LICENSE
 *     for details.
 ************************************************************/

/* funcs.h 
 * RCS $Id: funcs.h,v 1.37 2003/10/02 16:39:41 eddy Exp $
 *
 * Declarations of external functions in HMMER.
 */            

#ifndef FUNCSH_INCLUDED
#define FUNCSH_INCLUDED

#include "config.h"
#include "structs.h"
#include "squid.h"
#include "msa.h"

/* alphabet.c
 * Configuration of global alphabet information
 */
extern void           DetermineAlphabet(char **rseqs, int  nseq);
extern void           SetAlphabet(int type);
extern unsigned char  SymbolIndex(char sym);
extern unsigned char *DigitizeSequence(char *seq, int L);
extern char          *DedigitizeSequence(unsigned char *dsq, int L);
extern void           DigitizeAlignment(MSA *msa, unsigned char ***ret_dsqs);
extern void           P7CountSymbol(float *counters, unsigned char sym, float wt);
extern void           DefaultGeneticCode(int *aacode);
extern void           DefaultCodonBias(float *codebias);

/* from core_algorithms.c
 * Clean research/demonstration versions of basic algorithms.
 */
extern struct dpmatrix_s *CreatePlan7Matrix(int N, int M, int padN, int padM);
extern void   ResizePlan7Matrix(struct dpmatrix_s *mx, int N, int M, 
				int ***xmx, int ***mmx, int ***imx, int ***dmx);
struct dpmatrix_s *AllocPlan7Matrix(int rows, int M, 
				    int ***xmx, int ***mmx, int ***imx, int ***dmx);
extern struct dpshadow_s *AllocShadowMatrix(int rows, int M, char ***xtb, 
					    char ***mtb, char ***itb, char ***dtb);
extern void  FreePlan7Matrix(struct dpmatrix_s *mx);
extern void  FreeShadowMatrix(struct dpshadow_s *tb);
extern int   P7ViterbiSpaceOK(int L, int M, struct dpmatrix_s *mx);
extern int   P7ViterbiSize(int L, int M);
extern int   P7SmallViterbiSize(int L, int M);
extern int   P7WeeViterbiSize(int L, int M);
extern float P7Forward(unsigned char *dsq, int L, struct plan7_s *hmm, 
			  struct dpmatrix_s **ret_mx);
extern float P7Viterbi(unsigned char *dsq, int L, struct plan7_s *hmm, struct dpmatrix_s *mx,
			  struct p7trace_s **ret_tr);
extern void  P7ViterbiTrace(struct plan7_s *hmm, unsigned char *dsq, int L,
			   struct dpmatrix_s *mx, struct p7trace_s **ret_tr);
extern float P7SmallViterbi(unsigned char *dsq, int L, struct plan7_s *hmm, 
			    struct dpmatrix_s *mx, struct p7trace_s **ret_tr);
extern float P7ParsingViterbi(unsigned char *dsq, int L, struct plan7_s *hmm, 
			      struct p7trace_s **ret_tr);
extern float P7WeeViterbi(unsigned char *dsq, int L, struct plan7_s *hmm, 
			  struct p7trace_s **ret_tr);
extern float Plan7ESTViterbi(unsigned char *dsq, int L, struct plan7_s *hmm, 
			     struct dpmatrix_s **ret_mx);
extern struct p7trace_s *P7ViterbiAlignAlignment(MSA *msa, struct plan7_s *hmm);
extern struct p7trace_s *ShadowTrace(struct dpshadow_s *tb, struct plan7_s *hmm, int L);
extern float  PostprocessSignificantHit(struct tophit_s *ghit, struct tophit_s *dhit,
					struct p7trace_s   *tr, struct plan7_s *hmm, unsigned char *dsq, 
					int L, char *seqname, char *seqacc, char *seqdesc, 
					int do_forward, float sc_override, int do_null2,
					struct threshold_s *thresh, int hmmpfam_mode);


/* from debug.c
 * Debugging output of various sorts.
 */
extern char *Statetype(char st);
extern char *AlphabetType2String(int type);
extern void P7PrintTrace(FILE *fp, struct p7trace_s *tr, 
			 struct plan7_s *hmm, unsigned char *dsq);
extern void P7PrintPrior(FILE *fp, struct p7prior_s *pri);
extern int  TraceCompare(struct p7trace_s *t1, struct p7trace_s *t2);
extern int  TraceVerify(struct p7trace_s *tr, int M, int N);

/* 
 * from display.c
 * Ian Holmes' functions for displaying HMMER2 data structures, especially
 * for posterior probabilities in alignments.
 */
extern void DisplayPlan7Matrix(unsigned char *dsq, int L, struct plan7_s *hmm,
			       struct dpmatrix_s *mx);
extern void DisplayPlan7Posteriors(int L, struct plan7_s *hmm,
				   struct dpmatrix_s *forward, struct dpmatrix_s *backward,
				   struct p7trace_s *viterbi, struct p7trace_s *optacc);
extern void DisplayPlan7PostAlign(int L, struct plan7_s *hmm,
				  struct dpmatrix_s *forward, struct dpmatrix_s *backward,
				  struct p7trace_s **alignment, int A);


/* from emit.c
 * Generation of sequences/traces from an HMM
 */
extern void EmitSequence(struct plan7_s *hmm, unsigned char **ret_dsq, int *ret_L, 
			 struct p7trace_s **ret_tr);
extern void EmitConsensusSequence(struct plan7_s *hmm, char **ret_seq, unsigned char **ret_dsq,
				  int *ret_L, struct p7trace_s **ret_tr);
extern void StateOccupancy(struct plan7_s *hmm, float **ret_mp, float **ret_ip, float **ret_dp);


/* from emulation.c
 * Interfaces between HMMER and other software packages
 */
extern void WriteProfile(FILE *fp, struct plan7_s *hmm, int do_xsw);


/* from histogram.c
 * accumulation of scores
 */
extern struct histogram_s *AllocHistogram(int min, int max, int lumpsize);
extern void FreeHistogram(struct histogram_s *h);
extern void UnfitHistogram(struct histogram_s *h);
extern void AddToHistogram(struct histogram_s *h, float sc);
extern void PrintASCIIHistogram(FILE *fp, struct histogram_s *h); 
extern void PrintXMGRHistogram(FILE *fp, struct histogram_s *h);
extern void PrintXMGRDistribution(FILE *fp, struct histogram_s *h);
extern void PrintXMGRRegressionLine(FILE *fp, struct histogram_s *h);
extern void EVDBasicFit(struct histogram_s *h);
extern int  ExtremeValueFitHistogram(struct histogram_s *h, int censor,
				     float high_hint);
extern void ExtremeValueSetHistogram(struct histogram_s *h, float mu, float lambda, 
				     float low, float high, int ndegrees);
extern int  GaussianFitHistogram(struct histogram_s *h, float high_hint);
extern void GaussianSetHistogram(struct histogram_s *h, float mean, float sd);
extern double EVDDensity(float x, float mu, float lambda);
extern double EVDDistribution(float x, float mu, float lambda);
extern double ExtremeValueP (float x, float mu, float lambda);
extern double ExtremeValueP2(float x, float mu, float lambda, int N);
extern double ExtremeValueE (float x, float mu, float lambda, int N);
extern float  EVDrandom(float mu, float lambda);
extern int    EVDMaxLikelyFit(float *x, int *y, int n, 
			      float *ret_mu, float *ret_lambda);
extern int    EVDCensoredFit(float *x, int *y, int n, int z, float c, 
			     float *ret_mu, float *ret_lambda);
extern void   Lawless416(float *x, int *y, int n, float lambda, 
			 float *ret_f, float *ret_df);
extern void   Lawless422(float *x, int *y, int n, int z, float c,
			 float lambda, float *ret_f, float *ret_df);

/* from hmmio.c
 * Input/output (saving/reading) of models
 */
extern HMMFILE *HMMFileOpen(char *hmmfile, char *env);
extern int      HMMFileRead(HMMFILE *hmmfp, struct plan7_s **ret_hmm);
extern void     HMMFileClose(HMMFILE *hmmfp);
extern int      HMMFileFormat(HMMFILE *hmmfp);
extern void     HMMFileRewind(HMMFILE *hmmfp);
extern int      HMMFilePositionByName(HMMFILE *hmmfp, char *name);
extern int      HMMFilePositionByIndex(HMMFILE *hmmfp, int idx);
extern void     WriteAscHMM(FILE *fp, struct plan7_s *hmm);
extern void     WriteBinHMM(FILE *fp, struct plan7_s *hmm);

/* masks.c
 * Repetitive sequence masking.
 */
extern int   XNU(unsigned char *dsq, int len);
extern float TraceScoreCorrection(struct plan7_s *hmm, struct p7trace_s *tr, unsigned char *dsq);

/* mathsupport.c
 * Much of this code deals with Dirichlet prior mathematics. 
 */
extern int   Prob2Score(float p, float null);
extern float Score2Prob(int sc, float null);
extern float Scorify(int sc);
extern double PValue(struct plan7_s *hmm, float sc);
extern float LogSum(float p1, float p2);
extern int   ILogsum(int p1, int p2);
extern void  LogNorm(float *vec, int n);
extern float Logp_cvec(float *cvec, int n, float *alpha);
extern void  SampleDirichlet(float *alpha, int n, float *p);