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# tlay.h

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    00001
    00002 /*
    00003  *   THIS FILE IS UNDER RCS - DO NOT MODIFY UNLESS YOU HAVE
    00004  *   CHECKED IT OUT USING THE COMMAND CHECKOUT.
    00005  *
    00006  *    $Id: tlay_8h-source.html 2161 2006-05-19 16:55:03Z paulf $
    00007  *
    00008  *    Revision history:
    00009  *     $Log$
    00009  *     Revision 1.1  2006/05/19 16:55:02  paulf
    00009  *     first inclusion
    00009  *
    00010  *     Revision 1.1  2000/02/14 20:05:54  lucky
    00011  *     Initial revision
    00012  *
    00013  *
    00014  */
    00015
    00016 /*
    00017  * tlay.h : Data descriptions used for regional travel time phases
    00018  *      0 = P, 1 = S, 2 = Pn, 3 = Sn, 4 = Pg, 5 = Sg
    00019  *
    00020  *$ 95Oct19 LDD Added prototypes for functions in tlay.c
    00021  */
    00022 #ifndef TLAY_H
    00023 #define TLAY_H
    00024
    00025 static char *Phs[] = {"P", "S", "Pn", "Sn", "Pg", "Sg"};
    00026 typedef struct {
    00027         int     phase;
    00028         double  t;
    00029         double  dtdr;
    00030         double  dtdz;
    00031 } TPHASE;
    00032
    00033
    00034 /* Prototypes for functions in tlay.c that might used in other source files
    00035  **************************************************************************/
    00036 int    t_com( void );     /* Process all recognized commands */
    00037
    00038 /* Calculate regional phase travel times: P, Pg, S, and Sg*/
    00039 int    t_region( double, double, TPHASE * );
    00040
    00041 /* Calculate travel time for a given phase */
    00042 double t_phase( int, double, double, double *, double * );
    00043
    00044 /* Calculate travel times */
    00045 double t_lay( double, double, double *, double * );
    00046
    00047
    00048 /* Prototypes for functions used internally by tlay.c functions
    00049  **************************************************************/
    00050 int    t_set( void );             /* Set up travel time calculations            */
    00051 float  t_dis( float );            /* Calc direct ray distance from takeoff angle*/
    00052 float  t_fun( float );            /* Calc direct travel time from takeoff angle */
    00053 int    t_model ( double, double );               /* Add layer to velocity model */
    00054 double t_direct( double, double, double *, double * ); /* direct P travel time  */
    00055 double t_pmp   ( double, double, double *, double * ); /* P mantle reflection t */
    00056
    00057 #endif