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* 2/2/95 Greg Ward |
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*/ |
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– |
#include <stdio.h> |
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#include <stdlib.h> |
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#include <math.h> |
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#include <ctype.h> |
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#include "rtprocess.h" /* getpid() */ |
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#include "rtmath.h" |
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#include "rtio.h" |
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|
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#define isdelim(c) (isspace(c) || (c)==',') |
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|
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< |
#define MAXTAB 1024 /* maximum number of data rows */ |
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#define MAXLINE 4096 /* maximum line width (characters) */ |
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#define FLOAT float /* real type (precision) */ |
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#define MAXTAB 8192 /* maximum number of data rows */ |
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#define MAXLINE 16384 /* maximum line width (characters) */ |
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#define OUTFMT "%.7g" /* output format conversion string */ |
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int interpolate = 0; |
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char **func; |
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int nfuncs; |
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FLOAT abscissa[MAXTAB]; /* independent values (first column) */ |
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FLOAT (*ordinate)[MAXTAB]; /* dependent values (other columns) */ |
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RREAL abscissa[MAXTAB]; /* independent values (first column) */ |
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RREAL (*ordinate)[MAXTAB]; /* dependent values (other columns) */ |
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int tabsize = 0; /* final table size (number of rows) */ |
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char locID[16]; /* local identifier (for uniqueness) */ |
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extern char *fgets(), *fskip(), *absc_exp(); |
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/*extern char *fgets(), *fskip(), *absc_exp();*/ |
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static void load_data(FILE *fp); |
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static void print_funcs(char *xe); |
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static void putlist(register RREAL *av, int al, register int pos); |
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static char * absc_exp(void); |
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main(argc, argv) |
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int argc; |
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char **argv; |
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int |
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main( |
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int argc, |
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char **argv |
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) |
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{ |
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progname = argv[0]; |
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argv++; |
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} |
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func = argv; |
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nfuncs = argc; |
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ordinate = (FLOAT (*)[MAXTAB])malloc(nfuncs*MAXTAB*sizeof(FLOAT)); |
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ordinate = (RREAL (*)[MAXTAB])malloc(nfuncs*MAXTAB*sizeof(RREAL)); |
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if (ordinate == NULL) { |
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fprintf(stderr, "%s: not enough memory\n", progname); |
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exit(1); |
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} |
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load_data(fp) /* load tabular data from fp */ |
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FILE *fp; |
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static void |
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load_data( /* load tabular data from fp */ |
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FILE *fp |
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) |
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{ |
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int lineno; |
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char *err; |
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} |
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char * |
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absc_exp() /* produce expression for abscissa */ |
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static char * |
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absc_exp(void) /* produce expression for abscissa */ |
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{ |
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static char ourexp[64]; |
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double step, eps; |
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strcpy(ourexp, "x"); |
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else |
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sprintf(ourexp, "x-%g", abscissa[0]-1); |
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} else |
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> |
} else if (fabs(abscissa[0]) < eps) |
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sprintf(ourexp, "x/%g+1", step); |
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else |
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sprintf(ourexp, "(x-%g)/%g+1", abscissa[0], step); |
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} else { |
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printf("X`%s(i):select(i,", locID); |
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putlist(abscissa, tabsize, 20); |
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puts(");"); |
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if (increasing) { |
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> |
if (increasing) |
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printf("fx2`%s(x,i):if(x-X`%s(i),\n", locID, locID); |
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else |
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printf("fx2`%s(x,i):if(X`%s(i)-x,\n", locID, locID); |
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> |
printf("\ti+(x-X`%s(i))/(X`%s(i+1)-X`%s(i)),\n", |
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locID, locID, locID); |
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printf("\tfx2`%s(x,i-1));\n", locID); |
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if (increasing) |
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printf("fx`%s(x):if(x-%g,if(%g-x,fx2`%s(x,%d),%d),1);\n", |
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locID, abscissa[0], abscissa[tabsize-1], |
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locID, tabsize, tabsize); |
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printf("fx2`%s(x,i):if(x-X`%s(i),\n", locID, locID); |
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< |
} else { |
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else |
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printf("fx`%s(x):if(%g-x,if(x-%g,fx2`%s(x,%d),%d),1);\n", |
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locID, abscissa[0], abscissa[tabsize-1], |
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locID, tabsize, tabsize); |
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printf("fx2`%s(x,i):if(X`%s(i)-x,\n", locID, locID); |
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} |
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printf("\ti+(x-X`%s(i))/(X`%s(i+1)-X`%s(i)),\n", |
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locID, locID, locID); |
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printf("\tfx2`%s(x,i-1));\n", locID); |
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sprintf(ourexp, "fx`%s(x)", locID); |
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} |
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return(ourexp); |
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} |
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|
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|
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< |
print_funcs(xe) /* print functions */ |
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< |
char *xe; |
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> |
static void |
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> |
print_funcs( /* print functions */ |
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> |
char *xe |
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> |
) |
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{ |
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int xelen; |
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register int i; |
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|
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xelen = strlen(xe); |
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for (i = 0; i < nfuncs; i++) { |
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< |
if (func[i][0] == '\0' | func[i][0] == '0') |
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> |
if ((func[i][0] == '\0') | (func[i][0] == '0')) |
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continue; |
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if (interpolate) { |
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printf("%s`%s(i):select(i,", func[i], locID); |
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} |
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|
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< |
putlist(av, al, pos) /* put out array of values */ |
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< |
register FLOAT *av; |
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< |
int al; |
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< |
register int pos; |
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> |
static void |
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> |
putlist( /* put out array of values */ |
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> |
register RREAL *av, |
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> |
int al, |
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> |
register int pos |
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> |
) |
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{ |
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char obuf[32]; |
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int len; |
