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37 #ifndef GMX_TOPOLOGY_IDEF_H
38 #define GMX_TOPOLOGY_IDEF_H
40 #include "gromacs/legacyheaders/types/simple.h"
47 /* check kernel/toppush.c when you change these numbers */
49 #define MAXFORCEPARAM 12
54 typedef atom_id t_iatom;
56 /* this MUST correspond to the
57 t_interaction_function[F_NRE] in gmxlib/ifunc.c */
139 F_VTEMP_NOLONGERUSED,
149 F_DVDL_TEMPERATURE, /* not calculated for now, but should just be the energy (NVT) or enthalpy (NPT), or 0 (NVE) */
150 F_NRE /* This number is for the total number of energies */
153 #define IS_RESTRAINT_TYPE(ifunc) (((ifunc == F_POSRES) || (ifunc == F_FBPOSRES) || (ifunc == F_DISRES) || (ifunc == F_RESTRBONDS) || (ifunc == F_DISRESVIOL) || (ifunc == F_ORIRES) || (ifunc == F_ORIRESDEV) || (ifunc == F_ANGRES) || (ifunc == F_ANGRESZ) || (ifunc == F_DIHRES)))
155 typedef union t_iparams
157 /* Some parameters have A and B values for free energy calculations.
158 * The B values are not used for regular simulations of course.
159 * Free Energy for nonbondeds can be computed by changing the atom type.
160 * The harmonic type is used for all harmonic potentials:
161 * bonds, angles and improper dihedrals
167 real rA, krA, rB, krB;
170 real klinA, aA, klinB, aB;
173 real lowA, up1A, up2A, kA, lowB, up1B, up2B, kB;
175 /* No free energy supported for cubic bonds, FENE, WPOL or cross terms */
186 real r1e, r2e, r3e, krt;
189 real thetaA, kthetaA, r13A, kUBA, thetaB, kthetaB, r13B, kUBB;
198 real alpha, drcut, khyp;
201 real al_x, al_y, al_z, rOH, rHH, rOD;
204 real a, alpha1, alpha2, rfac;
210 real c6A, c12A, c6B, c12B;
213 real fqq, qi, qj, c6, c12;
216 real qi, qj, c6, c12;
218 /* Proper dihedrals can not have different multiplicity when
219 * doing free energy calculations, because the potential would not
220 * be periodic anymore.
223 real phiA, cpA; int mult; real phiB, cpB;
228 /* Settle can not be used for Free energy calculations of water bond geometry.
229 * Use shake (or lincs) instead if you have to change the water bonds.
235 real b0A, cbA, betaA, b0B, cbB, betaB;
238 real pos0A[DIM], fcA[DIM], pos0B[DIM], fcB[DIM];
241 real pos0[DIM], r, k; int geom;
244 real rbcA[NR_RBDIHS], rbcB[NR_RBDIHS];
247 real cbtcA[NR_CBTDIHS], cbtcB[NR_CBTDIHS];
250 real a, b, c, d, e, f;
255 /* NOTE: npair is only set after reading the tpx file */
257 real low, up1, up2, kfac; int type, label, npair;
260 real phiA, dphiA, kfacA, phiB, dphiB, kfacB;
263 int ex, power, label; real c, obs, kfac;
266 int table; real kA; real kB;
269 real sar, st, pi, gbr, bmlt;
275 real buf[MAXFORCEPARAM];
276 } generic; /* Conversion */
279 typedef int t_functype;
282 * The nonperturbed/perturbed interactions are now separated (sorted) in the
283 * ilist, such that the first 0..(nr_nonperturbed-1) ones are exactly that, and
284 * the remaining ones from nr_nonperturbed..(nr-1) are perturbed bonded
287 typedef struct t_ilist
296 * The struct t_ilist defines a list of atoms with their interactions.
297 * General field description:
299 * the size (nr elements) of the interactions array (iatoms[]).
301 * specifies which atoms are involved in an interaction of a certain
302 * type. The layout of this array is as follows:
304 * +-----+---+---+---+-----+---+---+-----+---+---+---+-----+---+---+...
305 * |type1|at1|at2|at3|type2|at1|at2|type1|at1|at2|at3|type3|at1|at2|
306 * +-----+---+---+---+-----+---+---+-----+---+---+---+-----+---+---+...
308 * So for interaction type type1 3 atoms are needed, and for type2 and
309 * type3 only 2. The type identifier is used to select the function to
310 * calculate the interaction and its actual parameters. This type
311 * identifier is an index in a params[] and functype[] array.
316 real *cmap; /* Has length 4*grid_spacing*grid_spacing, */
317 /* there are 4 entries for each cmap type (V,dVdx,dVdy,d2dVdxdy) */
320 typedef struct gmx_cmap_t
322 int ngrid; /* Number of allocated cmap (cmapdata_t ) grids */
323 int grid_spacing; /* Grid spacing */
324 gmx_cmapdata_t *cmapdata; /* Pointer to grid with actual, pre-interpolated data */
328 typedef struct gmx_ffparams_t
332 t_functype *functype;
334 double reppow; /* The repulsion power for VdW: C12*r^-reppow */
335 real fudgeQQ; /* The scaling factor for Coulomb 1-4: f*q1*q2 */
336 gmx_cmap_t cmap_grid; /* The dihedral correction maps */
340 ilsortUNKNOWN, ilsortNO_FE, ilsortFE_UNSORTED, ilsortFE_SORTED
343 typedef struct t_idef
347 t_functype *functype;
350 gmx_cmap_t cmap_grid;
351 t_iparams *iparams_posres, *iparams_fbposres;
352 int iparams_posres_nalloc, iparams_fbposres_nalloc;
357 int *il_thread_division;
358 int il_thread_division_nalloc;
362 * The struct t_idef defines all the interactions for the complete
363 * simulation. The structure is setup in such a way that the multinode
364 * version of the program can use it as easy as the single node version.
365 * General field description:
367 * defines the number of elements in functype[] and param[].
369 * the node id (if parallel machines)
371 * the number of atomtypes
372 * t_functype *functype
373 * array of length ntypes, defines for every force type what type of
374 * function to use. Every "bond" with the same function but different
375 * force parameters is a different force type. The type identifier in the
376 * forceatoms[] array is an index in this array.
378 * array of length ntypes, defines the parameters for every interaction
379 * type. The type identifier in the actual interaction list
380 * (ilist[ftype].iatoms[]) is an index in this array.
381 * gmx_cmap_t cmap_grid
382 * the grid for the dihedral pair correction maps.
383 * t_iparams *iparams_posres, *iparams_fbposres
384 * defines the parameters for position restraints only.
385 * Position restraints are the only interactions that have different
386 * parameters (reference positions) for different molecules
387 * of the same type. ilist[F_POSRES].iatoms[] is an index in this array.
389 * The list of interactions for each type. Note that some,
390 * such as LJ and COUL will have 0 entries.
392 * The state of the sorting of il, values are provided above.
394 * The number of threads used to set il_thread_division.
395 * int *il_thread_division
396 * The division of the normal bonded interactions of threads.
397 * il_thread_division[ftype*(nthreads+1)+t] contains an index
398 * into il[ftype].iatoms; thread th operates on t=th to t=th+1.
399 * int il_thread_division_nalloc
400 * The allocated size of il_thread_division,
401 * should be at least F_NRE*(nthreads+1).