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SwRI can revise these Terms at any time * without notice by updating this posting. * * Trademarks * * The SwRI logo is a trademark of SwRI in the United States and other countries. * */ #ident "@(#) $Id: alloc_pot.c 19949 2008-10-15 19:59:53Z carrie $ SwRI" #include #include #include "ret_codes.h" #include "gen_defs.h" #include "libbase_idfs.h" /******************************************************************************* * * * IR_ALLOC_POTENTIAL_INFO SUBROUTINE * * * * DESCRIPTION * * This routine is called to allocate the structure that holds spacecraft * * potential information. Those data elements not retrieved from the VIDF * * file are initialized. * * * * INPUT VARIABLES * * SDDAS_SHORT etime_yr the stop time requested (year component) * * SDDAS_SHORT etime_day the stop time requested (day component) * * SDDAS_LONG etime_sec the stop time requested (seconds component) * * SDDAS_LONG etime_nsec the stop time requested (nanoseconds) * * * * USAGE * * x = ir_alloc_potential_info (etime_yr, etime_day, etime_sec, etime_nsec) * * * * NECESSARY SUBPROGRAMS * * sizeof () the size of the specified object in bytes * * malloc() allocates memory * * strcpy() copies a string to another string variable * * * * EXTERNAL VARIABLES * * struct general_info ginfo structure that holds information concerning * * the experiment that is being processed * * * * INTERNAL VARIABLES * * struct experiment_info *ex a pointer to the structure that holds * * specific experiment information * * reg struct potential_info a pointer to the structure that holds space-* * *potential_ptr craft potential information * * SDDAS_LONG offset index into allocated memory * * SDDAS_SHORT max_size max. size for packed scalars or max elements* * in a sweep for a sweeping instrument * * size_t bytes the number of bytes to allocate * * size_t num_bytes_sdouble number of bytes needed for a SDDAS_DOUBLE * * size_t num_bytes_sfloat number of bytes needed for a SDDAS_FLOAT * * void *tmp_ptr pointer which holds address passed back by * * the call to the MALLOC routine * * * * SUBSYSTEM * * Display Level * * * ******************************************************************************/ SDDAS_SHORT ir_alloc_potential_info (SDDAS_SHORT etime_yr, SDDAS_SHORT etime_day, SDDAS_LONG etime_sec, SDDAS_LONG etime_nsec) { extern struct general_info ginfo; struct experiment_info *ex; register struct potential_info *potential_ptr; SDDAS_LONG offset; SDDAS_SHORT max_size; size_t bytes, num_bytes_sdouble, num_bytes_sfloat; void *tmp_ptr; /***************************************************************************/ /* Allocate the structure that holds the spacecraft potential information.*/ /***************************************************************************/ ex = ginfo.expt; bytes = sizeof (struct potential_info); if ((tmp_ptr = malloc (bytes)) == NO_MEMORY) return (POT_MALLOC); ex->bmem.base_potential_info = tmp_ptr; ex->potential = (struct potential_info *) ex->bmem.base_potential_info; potential_ptr = ex->potential; strcpy (potential_ptr->exten, ex->exten); potential_ptr->get_potential_data = 1; potential_ptr->file_status = 0; /**************************************************************************/ /* Save time passed to FILE_OPEN for parent data set. */ /**************************************************************************/ potential_ptr->stop_year = etime_yr; potential_ptr->stop_day = etime_day; potential_ptr->stop_sec = etime_sec; potential_ptr->stop_nano = etime_nsec; /**************************************************************************/ /* Initialize those values not read from the VIDF file. */ /**************************************************************************/ potential_ptr->next_data = 1; potential_ptr->all_done = 0; potential_ptr->idf_data_ptr = NO_MEMORY; potential_ptr->base_tbls = NO_MEMORY; potential_ptr->tbl_apply = NO_MEMORY; potential_ptr->tbl_oper = NO_MEMORY; potential_ptr->base_data = NO_MEMORY; potential_ptr->data_val = NO_MEMORY; potential_ptr->time_frac = NO_MEMORY; potential_ptr->step_status = NO_MEMORY; /***************************************************************************/ /* Initialize time of last sweep processed. */ /***************************************************************************/ potential_ptr->last_swp.byear = 0; potential_ptr->last_swp.bday = 0; potential_ptr->last_swp.bmilli = 0; potential_ptr->last_swp.bnano = 0; potential_ptr->last_swp.eyear = 0; potential_ptr->last_swp.eday = 0; potential_ptr->last_swp.emilli = 0; potential_ptr->last_swp.enano = 0; /****************************************************************************/ /* Allocate space to hold the data, normalization factors and step status */ /* indicators. Allocate one set per element of the parent sweep. For */ /* sweeping instruments, SWP_LEN is used since the maximum length of the */ /* parent sweep is needed. For scalar instruments, use the max_packing */ /* value in case of packed scalars, which will return 1 spacecraft */ /* potential for each packed value. */ /****************************************************************************/ if (ex->smp_id == 2) max_size = ex->max_packing; else max_size = ex->swp_len; num_bytes_sdouble = sizeof (SDDAS_DOUBLE); num_bytes_sfloat = sizeof (SDDAS_FLOAT); bytes = (num_bytes_sdouble + num_bytes_sfloat + sizeof (SDDAS_CHAR)) * max_size; if ((tmp_ptr = malloc (bytes)) == NO_MEMORY) return (POT_DATA_MALLOC); potential_ptr->base_data = tmp_ptr; potential_ptr->data_val = (SDDAS_DOUBLE *) potential_ptr->base_data; /* Cast base_data to a char. ptr since void and offset is in bytes. */ offset = max_size * num_bytes_sdouble; potential_ptr->time_frac = (SDDAS_FLOAT *) ((SDDAS_CHAR *) potential_ptr->base_data + offset); offset += max_size * num_bytes_sfloat; potential_ptr->step_status = (SDDAS_CHAR *) ((SDDAS_CHAR *) potential_ptr->base_data + offset); return (ALL_OKAY); }