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/* Copyright (c) 1991 Regents of the University of California */ |
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/* Copyright (c) 1995 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#include "data.h" |
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|
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/* picture memory usage before warning */ |
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#ifndef PSIZWARN |
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#ifdef BIGMEM |
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#define PSIZWARN 3000000 |
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#else |
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#define PSIZWARN 1000000 |
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#endif |
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#endif |
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|
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extern char *fgetword(); |
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#ifndef TABSIZ |
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#define TABSIZ 97 /* table size (prime) */ |
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#endif |
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|
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extern char *libpath; /* library search path */ |
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#define hash(s) (shash(s)%TABSIZ) |
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|
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static DATARRAY *dlist = NULL; /* data array list */ |
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|
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static DATARRAY *plist = NULL; /* picture list */ |
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extern char *getlibpath(); /* library search path */ |
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|
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static DATARRAY *dtab[TABSIZ]; /* data array list */ |
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|
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static DATARRAY *ptab[TABSIZ]; /* picture list */ |
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|
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|
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DATARRAY * |
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getdata(dname) /* get data array dname */ |
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char *dname; |
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{ |
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char word[64]; |
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char *dfname; |
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FILE *fp; |
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int asize; |
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register int i, j; |
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register DATARRAY *dp; |
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/* look for array in list */ |
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for (dp = dlist; dp != NULL; dp = dp->next) |
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for (dp = dtab[hash(dname)]; dp != NULL; dp = dp->next) |
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if (!strcmp(dname, dp->name)) |
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return(dp); /* found! */ |
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|
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/* |
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* If we haven't loaded the data already, we will look |
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* for it in the directorys specified by the library path. |
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* for it in the directories specified by the library path. |
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* |
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* The file has the following format: |
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* |
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* 0 0 ni p0i p1i .. pni |
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*/ |
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|
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if ((dfname = getpath(dname, libpath, R_OK)) == NULL) { |
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if ((dfname = getpath(dname, getlibpath(), R_OK)) == NULL) { |
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sprintf(errmsg, "cannot find data file \"%s\"", dname); |
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error(USER, errmsg); |
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} |
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error(SYSTEM, errmsg); |
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} |
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/* get dimensions */ |
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if (fgetword(word, sizeof(word), fp) == NULL || !isint(word)) |
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if (fgetval(fp, 'i', &dp->nd) <= 0) |
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goto scanerr; |
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dp->nd = atoi(word); |
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if (dp->nd <= 0 || dp->nd > MAXDDIM) { |
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sprintf(errmsg, "bad number of dimensions for \"%s\"", dname); |
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error(USER, errmsg); |
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} |
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asize = 1; |
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for (i = 0; i < dp->nd; i++) { |
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if (fgetword(word, sizeof(word), fp) == NULL || !isflt(word)) |
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if (fgetval(fp, 'd', &dp->dim[i].org) <= 0) |
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goto scanerr; |
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dp->dim[i].org = atof(word); |
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if (fgetword(word, sizeof(word), fp) == NULL || !isflt(word)) |
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if (fgetval(fp, 'd', &dp->dim[i].siz) <= 0) |
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goto scanerr; |
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dp->dim[i].siz = atof(word); |
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if (fgetword(word, sizeof(word), fp) == NULL || !isint(word)) |
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if (fgetval(fp, 'i', &dp->dim[i].ne) <= 0) |
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goto scanerr; |
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dp->dim[i].ne = atoi(word); |
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if (dp->dim[i].ne < 2) |
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goto scanerr; |
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asize *= dp->dim[i].ne; |
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dp->dim[i].p = (double *)malloc(dp->dim[i].ne*sizeof(double)); |
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if (dp->dim[i].p == NULL) |
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goto memerr; |
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for (j = 0; j < dp->dim[i].ne; j++) { |
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if (fgetword(word, sizeof(word), fp) == NULL || |
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!isflt(word)) |
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for (j = 0; j < dp->dim[i].ne; j++) |
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if (fgetval(fp, 'd', &dp->dim[i].p[j]) <= 0) |
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goto scanerr; |
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dp->dim[i].p[j] = atof(word); |
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} |
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for (j = 1; j < dp->dim[i].ne-1; j++) |
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if ((dp->dim[i].p[j-1] < dp->dim[i].p[j]) != |
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(dp->dim[i].p[j] < dp->dim[i].p[j+1])) |
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if ((dp->arr = (DATATYPE *)malloc(asize*sizeof(DATATYPE))) == NULL) |
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goto memerr; |
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for (i = 0; i < asize; i++) { |
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if (fgetword(word, sizeof(word), fp) == NULL || !isflt(word)) |
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for (i = 0; i < asize; i++) |
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if (fgetval(fp, DATATY, &dp->arr[i]) <= 0) |
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goto scanerr; |
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dp->arr[i] = atof(word); |
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} |
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fclose(fp); |
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dp->next = dlist; |
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return(dlist = dp); |
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i = hash(dname); |
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dp->next = dtab[i]; |
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return(dtab[i] = dp); |
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|
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memerr: |
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error(SYSTEM, "out of memory in getdata"); |
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} |
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static double inpaspect; /* aspect ratio of input picture */ |
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|
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static |
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headaspect(s) /* check string for aspect ratio */ |
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headaspect(s, iap) /* check string for aspect ratio */ |
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char *s; |
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double *iap; |
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{ |
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if (isaspect(s)) |
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inpaspect *= aspectval(s); |
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*iap *= aspectval(s); |
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} |
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getpict(pname) /* get picture pname */ |
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char *pname; |
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{ |
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extern char *libpath; |
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double inpaspect; |
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char *pfname; |
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FILE *fp; |
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COLOR *scanin; |
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int sl, ns; |
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RESOLU inpres; |
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RESOLU inpres; |
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FLOAT loc[2]; |
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int y; |
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register int x, i; |
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register DATARRAY *pp; |
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/* look for array in list */ |
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for (pp = plist; pp != NULL; pp = pp->next) |
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for (pp = ptab[hash(pname)]; pp != NULL; pp = pp->next) |
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if (!strcmp(pname, pp->name)) |
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return(pp); /* found! */ |
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if ((pfname = getpath(pname, libpath, R_OK)) == NULL) { |
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if ((pfname = getpath(pname, getlibpath(), R_OK)) == NULL) { |
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sprintf(errmsg, "cannot find picture file \"%s\"", pname); |
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error(USER, errmsg); |
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} |
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sprintf(errmsg, "cannot open picture file \"%s\"", pfname); |
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error(SYSTEM, errmsg); |
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} |
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#ifdef MSDOS |
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setmode(fileno(fp), O_BINARY); |
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#endif |
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/* get dimensions */ |
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inpaspect = 1.0; |
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getheader(fp, headaspect); |
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getheader(fp, headaspect, &inpaspect); |
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if (!fgetsresolu(&inpres, fp)) |
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goto readerr; |
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#if PSIZWARN |
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/* check memory usage */ |
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i = 3*sizeof(DATATYPE)*inpres.xr*inpres.yr; |
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if (i > PSIZWARN) { |
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sprintf(errmsg, "picture file \"%s\" using %d bytes of memory", |
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pname, i); |
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error(WARNING, errmsg); |
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} |
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#endif |
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for (i = 0; i < 3; i++) { |
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pp[i].nd = 2; |
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pp[i].dim[0].ne = inpres.yr; |
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} |
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free((char *)scanin); |
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fclose(fp); |
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i = hash(pname); |
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pp[0].next = |
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pp[1].next = |
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< |
pp[2].next = plist; |
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return(plist = pp); |
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pp[2].next = ptab[i]; |
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return(ptab[i] = pp); |
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memerr: |
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error(SYSTEM, "out of memory in getpict"); |
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freedata(dname) /* free memory associated with dname */ |
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char *dname; |
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{ |
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DATARRAY head; |
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int hval, nents; |
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register DATARRAY *dp, *dpl; |
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register int i; |
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|
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for (dpl = NULL, dp = dlist; dp != NULL; dpl = dp, dp = dp->next) |
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< |
if (!strcmp(dname, dp->name)) { |
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if (dpl == NULL) |
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< |
dlist = dp->next; |
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else |
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if (dname == NULL) { /* free all if NULL */ |
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> |
hval = 0; nents = TABSIZ; |
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> |
} else { |
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hval = hash(dname); nents = 1; |
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> |
} |
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> |
while (nents--) { |
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head.next = dtab[hval]; |
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> |
dpl = &head; |
277 |
> |
while ((dp = dpl->next) != NULL) |
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if (dname == NULL || !strcmp(dname, dp->name)) { |
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dpl->next = dp->next; |
280 |
< |
free((char *)dp->arr); |
281 |
< |
for (i = 0; i < dp->nd; i++) |
282 |
< |
if (dp->dim[i].p != NULL) |
283 |
< |
free((char *)dp->dim[i].p); |
284 |
< |
freestr(dp->name); |
285 |
< |
free((char *)dp); |
286 |
< |
return; |
287 |
< |
} |
280 |
> |
free((char *)dp->arr); |
281 |
> |
for (i = 0; i < dp->nd; i++) |
282 |
> |
if (dp->dim[i].p != NULL) |
283 |
> |
free((char *)dp->dim[i].p); |
284 |
> |
freestr(dp->name); |
285 |
> |
free((char *)dp); |
286 |
> |
} else |
287 |
> |
dpl = dp; |
288 |
> |
dtab[hval++] = head.next; |
289 |
> |
} |
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} |
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|
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|
293 |
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freepict(pname) /* free memory associated with pname */ |
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char *pname; |
295 |
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{ |
296 |
+ |
DATARRAY head; |
297 |
+ |
int hval, nents; |
298 |
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register DATARRAY *pp, *ppl; |
299 |
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|
300 |
< |
for (ppl = NULL, pp = plist; pp != NULL; ppl = pp, pp = pp->next) |
301 |
< |
if (!strcmp(pname, pp->name)) { |
302 |
< |
if (ppl == NULL) |
303 |
< |
plist = pp->next; |
304 |
< |
else |
300 |
> |
if (pname == NULL) { /* free all if NULL */ |
301 |
> |
hval = 0; nents = TABSIZ; |
302 |
> |
} else { |
303 |
> |
hval = hash(pname); nents = 1; |
304 |
> |
} |
305 |
> |
while (nents--) { |
306 |
> |
head.next = ptab[hval]; |
307 |
> |
ppl = &head; |
308 |
> |
while ((pp = ppl->next) != NULL) |
309 |
> |
if (pname == NULL || !strcmp(pname, pp->name)) { |
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ppl->next = pp->next; |
311 |
< |
free((char *)pp[0].arr); |
312 |
< |
free((char *)pp[1].arr); |
313 |
< |
free((char *)pp[2].arr); |
314 |
< |
freestr(pp[0].name); |
315 |
< |
free((char *)pp); |
316 |
< |
return; |
317 |
< |
} |
311 |
> |
free((char *)pp[0].arr); |
312 |
> |
free((char *)pp[1].arr); |
313 |
> |
free((char *)pp[2].arr); |
314 |
> |
freestr(pp[0].name); |
315 |
> |
free((char *)pp); |
316 |
> |
} else |
317 |
> |
ppl = pp; |
318 |
> |
ptab[hval++] = head.next; |
319 |
> |
} |
320 |
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} |
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double |
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datavalue(dp, pt) /* interpolate data value at a point */ |
325 |
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register DATARRAY *dp; |
326 |
< |
double *pt; |
326 |
> |
double *pt; |
327 |
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{ |
328 |
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DATARRAY sd; |
329 |
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int asize; |
330 |
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int lower, upper; |
331 |
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register int i; |
332 |
< |
double x, y, y0, y1; |
332 |
> |
double x, y0, y1; |
333 |
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/* set up dimensions for recursion */ |
334 |
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sd.nd = dp->nd - 1; |
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asize = 1; |
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/* get independent variable */ |
343 |
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if (dp->dim[0].p == NULL) { /* evenly spaced points */ |
344 |
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x = (pt[0] - dp->dim[0].org)/dp->dim[0].siz; |
345 |
< |
x = x * (dp->dim[0].ne - 1); |
345 |
> |
x *= (double)(dp->dim[0].ne - 1); |
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i = x; |
347 |
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if (i < 0) |
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i = 0; |
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* taper off harmonically to zero. |
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*/ |
385 |
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if (x > i+2) |
386 |
< |
y = (2*y1-y0)/(x-i-1); |
353 |
< |
else if (x < i-1) |
354 |
< |
y = (2*y0-y1)/(i-x); |
355 |
< |
else |
356 |
< |
y = y0*((i+1)-x) + y1*(x-i); |
386 |
> |
return( (2*y1-y0)/(x-(i-1)) ); |
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|
388 |
< |
return(y); |
388 |
> |
if (x < i-1) |
389 |
> |
return( (2*y0-y1)/(i-x) ); |
390 |
> |
|
391 |
> |
return( y0*((i+1)-x) + y1*(x-i) ); |
392 |
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} |