/* * Copyright (C) 1998 by Southwest Research Institute (SwRI) * * All rights reserved under U.S. Copyright Law and International Conventions. * * The development of this Software was supported by contracts NAG5-3148, * NAG5-6855, NAS8-36840, NAG5-2323, and NAG5-7043 issued on behalf of * the United States Government by its National Aeronautics and Space * Administration. Southwest Research Institute grants to the Government, * and others acting on its behalf, a paid-up nonexclusive, irrevocable, * worldwide license to reproduce, prepare derivative works, and perform * publicly and display publicly, by or on behalf of the Government. * Other than those rights granted to the United States Government, no part * of this Software may be reproduced in any form or by any means, electronic * or mechanical, including photocopying, without permission in writing from * Southwest Research Institute. 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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 "@(#) $I$ SwRI" #include "libbase_idfs.h" /******************************************************************************* * * * IR_COPY_BACKGROUND_DATA SUBROUTINE * * * * DESCRIPTION * * This routine is called to process background data when the time range * * for each element of the sweep are the same (parallel acquisition). In * * this case, sweep step zero has already been computed, while all other * * elements are simply copied from sweep step zero for the parent sensor * * being processed. * * * * INPUT VARIABLES * * struct background_info *bkgd_ptr a ptr to the structure that holds * * background information * * SDDAS_USHORT swp_step current step of the sweep being processed * * SDDAS_SHORT num_sensors number of sensors in parent data set * * which data is requested * * * * USAGE * * ir_copy_background_data (bkgd_ptr, swp_step, num_sensors) * * * * NECESSARY SUBPROGRAMS * * None * * * * EXTERNAL VARIABLES * * None * * * * INTERNAL VARIABLES * * register SDDAS_FLOAT *dptr pointer to data for all the euler angles * * for the step being processed * * register SDDAS_FLOAT *fptr pointer to the normalization factors for * * the step being processed * * SDDAS_SHORT i looping variable * * SDDAS_FLOAT *base_dptr pointer to data for all the euler angles * * for element zero * * SDDAS_FLOAT time_frac the percentage of the data to be included * * for the delta-t being processed * * SDDAS_LONG offset offset to get to correct sweep step * * * * SUBSYSTEM * * Display Level * * * ******************************************************************************/ void ir_copy_background_data (struct background_info *bkgd_ptr, SDDAS_USHORT swp_step, SDDAS_SHORT num_sensors) { register SDDAS_FLOAT *dptr, *fptr; SDDAS_SHORT i; SDDAS_FLOAT *base_dptr, time_frac = 0.0; SDDAS_LONG offset; for (i = 0; i < num_sensors; ++i) { /***************************************************************************/ /* Always point to element zero of the memory location for the parent */ /* sensor being processed. Set frac to 1.0 since the value in location */ /* zero has already been multiplied by frac. (normalized in */ /* ir_idfs_background_data ()) */ /***************************************************************************/ base_dptr = bkgd_ptr->data_values + i; time_frac = 1.0; /***************************************************************************/ /* Copy the scalar background value from element zero to the current step */ /* being processed. */ /***************************************************************************/ offset = num_sensors * swp_step; dptr = bkgd_ptr->data_values + offset + i; fptr = bkgd_ptr->time_frac + offset + i; *dptr = *base_dptr; *fptr = time_frac; /************************************************************************/ /* Reset the flag for each component to process the next delta-t. */ /* This was previously done by ir_acquire_background_data(), but this */ /* module is now called by ir_idfs_background_data () for speed-up */ /* issues. */ /************************************************************************/ *(bkgd_ptr->all_done + i) = 0; } }