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37 * Implements functions in selvalue.h.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
40 * \ingroup module_selection
44 #include "gromacs/selection/indexutil.h"
45 #include "gromacs/selection/position.h"
46 #include "gromacs/selection/selvalue.h"
47 #include "gromacs/utility/gmxassert.h"
48 #include "gromacs/utility/smalloc.h"
51 * \param[out] val Output structure
53 * The type of \p val is not touched.
54 * Any contents of \p val are discarded without freeing.
57 _gmx_selvalue_clear(gmx_ana_selvalue_t *val)
65 * \param[in,out] val Value structure to allocate.
66 * \param[in] n Maximum number of values needed.
67 * \returns Zero on success.
69 * Reserves memory for the values within \p val to store at least \p n values,
70 * of the type specified in the \p val structure.
72 * If the type is \ref POS_VALUE or \ref GROUP_VALUE, memory is reserved for
73 * the data structures, but no memory is reserved inside these newly allocated
75 * Similarly, for \ref STR_VALUE values, the pointers are set to NULL.
76 * For other values, the memory is uninitialized.
79 _gmx_selvalue_reserve(gmx_ana_selvalue_t *val, int n)
83 if (val->nalloc == -1)
88 if (!val->u.ptr || val->nalloc < n)
92 case INT_VALUE: srenew(val->u.i, n); break;
93 case REAL_VALUE: srenew(val->u.r, n); break;
96 for (i = val->nalloc; i < n; ++i)
102 GMX_RELEASE_ASSERT(val->u.ptr == NULL,
103 "Reallocation of position values not supported");
104 val->u.p = new gmx_ana_pos_t[n];
108 for (i = val->nalloc; i < n; ++i)
110 gmx_ana_index_clear(&val->u.g[i]);
113 case NO_VALUE: break;
121 * \param[in,out] val Value structure to allocate.
122 * \param[in] ptr Pointer where the values should be stored.
123 * \returns Zero on success.
125 * Automatic memory management is disabled for \p ptr, unless \p ptr is NULL.
128 _gmx_selvalue_setstore(gmx_ana_selvalue_t *val, void *ptr)
131 val->nalloc = (ptr ? -1 : 0);
136 * \param[in,out] val Value structure to allocate.
137 * \param[in] ptr Pointer where the values should be stored.
138 * \param[in] nalloc Number of values allocated for \p ptr.
139 * \returns Zero on success.
142 _gmx_selvalue_setstore_alloc(gmx_ana_selvalue_t *val, void *ptr, int nalloc)
145 val->nalloc = nalloc;