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/* Copyright (c) 1986 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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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* calfunc.c - routines for calcomp using functions. |
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* |
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* The define BIGLIB pulls in a large number of the |
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* available math routines. |
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* |
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* If VARIABLE is not defined, only library functions |
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* If VARIABLE is not set, only library functions |
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* can be accessed. |
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* |
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* 4/2/86 |
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* 2/19/03 Eliminated conditional compiles in favor of esupport extern. |
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*/ |
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#include <stdio.h> |
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#include "copyright.h" |
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#include <stdio.h> |
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#include <string.h> |
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#include <errno.h> |
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#include <math.h> |
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#include "rterror.h" |
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#include "calcomp.h" |
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/* bits in argument flag (better be right!) */ |
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#define AFLAGSIZ (8*sizeof(unsigned long)) |
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#define ALISTSIZ 6 /* maximum saved argument list */ |
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typedef struct activation { |
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static ACTIVATION *curact = NULL; |
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static double libfunc(); |
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static double libfunc(char *fname, VARDEF *vp); |
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#ifndef MAXLIB |
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#define MAXLIB 64 /* maximum number of library functions */ |
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#endif |
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static double l_if(), l_select(), l_rand(); |
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static double l_floor(), l_ceil(); |
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#ifdef BIGLIB |
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static double l_sqrt(); |
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static double l_sin(), l_cos(), l_tan(); |
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static double l_asin(), l_acos(), l_atan(), l_atan2(); |
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static double l_exp(), l_log(), l_log10(); |
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#endif |
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#ifdef BIGLIB |
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/* functions must be listed alphabetically */ |
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static LIBR library[MAXLIB] = { |
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{ "acos", 1, l_acos }, |
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{ "asin", 1, l_asin }, |
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{ "atan", 1, l_atan }, |
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{ "atan2", 2, l_atan2 }, |
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{ "ceil", 1, l_ceil }, |
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{ "cos", 1, l_cos }, |
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{ "exp", 1, l_exp }, |
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{ "floor", 1, l_floor }, |
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{ "if", 3, l_if }, |
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{ "log", 1, l_log }, |
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{ "log10", 1, l_log10 }, |
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{ "rand", 1, l_rand }, |
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{ "select", 1, l_select }, |
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{ "sin", 1, l_sin }, |
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{ "sqrt", 1, l_sqrt }, |
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{ "tan", 1, l_tan }, |
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{ "acos", 1, ':', l_acos }, |
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{ "asin", 1, ':', l_asin }, |
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{ "atan", 1, ':', l_atan }, |
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{ "atan2", 2, ':', l_atan2 }, |
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{ "ceil", 1, ':', l_ceil }, |
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{ "cos", 1, ':', l_cos }, |
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{ "exp", 1, ':', l_exp }, |
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{ "floor", 1, ':', l_floor }, |
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{ "if", 3, ':', l_if }, |
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{ "log", 1, ':', l_log }, |
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{ "log10", 1, ':', l_log10 }, |
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{ "rand", 1, ':', l_rand }, |
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{ "select", 1, ':', l_select }, |
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{ "sin", 1, ':', l_sin }, |
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{ "sqrt", 1, ':', l_sqrt }, |
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{ "tan", 1, ':', l_tan }, |
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}; |
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static int libsize = 16; |
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#else |
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/* functions must be listed alphabetically */ |
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static LIBR library[MAXLIB] = { |
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{ "ceil", 1, l_ceil }, |
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{ "floor", 1, l_floor }, |
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{ "if", 3, l_if }, |
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{ "rand", 1, l_rand }, |
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{ "select", 1, l_select }, |
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}; |
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|
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static int libsize = 5; |
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|
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#endif |
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|
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extern char *savestr(), *emalloc(); |
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|
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extern LIBR *liblookup(); |
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|
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extern VARDEF *argf(); |
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|
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#ifdef VARIABLE |
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#define resolve(ep) ((ep)->type==VAR?(ep)->v.ln:argf((ep)->v.chan)) |
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#else |
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#define resolve(ep) ((ep)->v.ln) |
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#define varlookup(name) NULL |
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#endif |
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int |
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fundefined(fname) /* return # of arguments for function */ |
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char *fname; |
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{ |
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LIBR *lp; |
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register LIBR *lp; |
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register VARDEF *vp; |
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if ((vp = varlookup(fname)) == NULL || vp->def == NULL |
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|| vp->def->v.kid->type != FUNC) |
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if ((lp = liblookup(fname)) == NULL) |
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return(0); |
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else |
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return(lp->nargs); |
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else |
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if ((vp = varlookup(fname)) != NULL && vp->def != NULL |
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&& vp->def->v.kid->type == FUNC) |
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return(nekids(vp->def->v.kid) - 1); |
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lp = vp != NULL ? vp->lib : liblookup(fname); |
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if (lp == NULL) |
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return(0); |
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return(lp->nargs); |
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} |
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act.name = fname; |
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act.prev = curact; |
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act.ap = a; |
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act.an = (1L<<n)-1; |
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if (n >= AFLAGSIZ) |
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act.an = ~0; |
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else |
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act.an = (1L<<n)-1; |
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act.fun = NULL; |
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curact = &act; |
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} |
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funset(fname, nargs, fptr) /* set a library function */ |
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void |
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funset(fname, nargs, assign, fptr) /* set a library function */ |
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char *fname; |
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int nargs; |
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int assign; |
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double (*fptr)(); |
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{ |
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int oldlibsize = libsize; |
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char *cp; |
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register LIBR *lp; |
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|
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if ((lp = liblookup(fname)) == NULL) { |
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/* check for context */ |
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for (cp = fname; *cp; cp++) |
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; |
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if (cp == fname) |
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return; |
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if (cp[-1] == CNTXMARK) |
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*--cp = '\0'; |
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if ((lp = liblookup(fname)) == NULL) { /* insert */ |
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if (libsize >= MAXLIB) { |
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eputs("Too many library functons!\n"); |
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quit(1); |
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if (strcmp(lp[-1].fname, fname) > 0) { |
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lp[0].fname = lp[-1].fname; |
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lp[0].nargs = lp[-1].nargs; |
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lp[0].atyp = lp[-1].atyp; |
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lp[0].f = lp[-1].f; |
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} else |
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break; |
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libsize++; |
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} |
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lp[0].fname = savestr(fname); |
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lp[0].nargs = nargs; |
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lp[0].f = fptr; |
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if (fptr == NULL) { /* delete */ |
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while (lp < &library[libsize-1]) { |
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lp[0].fname = lp[1].fname; |
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lp[0].nargs = lp[1].nargs; |
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lp[0].atyp = lp[1].atyp; |
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lp[0].f = lp[1].f; |
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lp++; |
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} |
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libsize--; |
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} else { /* or assign */ |
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lp[0].fname = fname; /* string must be static! */ |
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lp[0].nargs = nargs; |
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lp[0].atyp = assign; |
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lp[0].f = fptr; |
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} |
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if (libsize != oldlibsize) |
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libupdate(fname); /* relink library */ |
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} |
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register int n; |
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{ |
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register ACTIVATION *actp = curact; |
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EPNODE *ep; |
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register EPNODE *ep; |
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double aval; |
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if (actp == NULL || --n < 0) { |
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quit(1); |
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} |
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/* already computed? */ |
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if (1L<<n & actp->an) |
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if (n < AFLAGSIZ && 1L<<n & actp->an) |
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return(actp->ap[n]); |
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if (actp->fun == NULL || (ep = ekid(actp->fun, n+1)) == NULL) { |
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} |
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#ifdef VARIABLE |
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VARDEF * |
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argf(n) /* return function def for nth argument */ |
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int n; |
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eputs(actp->name); |
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eputs(": argument not a function\n"); |
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quit(1); |
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return NULL; /* pro forma return */ |
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} |
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{ |
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return(argf(n)->name); |
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} |
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#endif |
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double |
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} |
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#ifndef VARIABLE |
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VARDEF * |
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varinsert(vname) /* dummy variable insert */ |
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char *vname; |
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{ |
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register VARDEF *vp; |
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|
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vp = (VARDEF *)emalloc(sizeof(VARDEF)); |
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vp->name = savestr(vname); |
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vp->nlinks = 1; |
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vp->def = NULL; |
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vp->lib = NULL; |
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vp->next = NULL; |
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return(vp); |
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} |
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|
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|
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varfree(vp) /* free dummy variable */ |
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register VARDEF *vp; |
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{ |
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freestr(vp->name); |
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efree((char *)vp); |
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} |
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#endif |
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|
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|
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|
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/* |
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* The following routines are for internal use: |
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*/ |
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static double |
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libfunc(fname, vp) /* execute library function */ |
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char *fname; |
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register VARDEF *vp; |
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VARDEF *vp; |
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{ |
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VARDEF dumdef; |
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register LIBR *lp; |
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double d; |
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int lasterrno; |
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if (vp == NULL) { |
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vp = &dumdef; |
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vp->lib = NULL; |
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} |
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if (((vp->lib == NULL || strcmp(fname, vp->lib->fname)) && |
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(vp->lib = liblookup(fname)) == NULL) || |
369 |
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vp->lib->f == NULL) { |
335 |
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if (vp != NULL) |
336 |
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lp = vp->lib; |
337 |
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else |
338 |
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lp = liblookup(fname); |
339 |
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if (lp == NULL) { |
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eputs(fname); |
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eputs(": undefined function\n"); |
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quit(1); |
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} |
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lasterrno = errno; |
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errno = 0; |
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d = (*vp->lib->f)(); |
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d = (*lp->f)(lp->fname); |
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#ifdef IEEE |
348 |
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if (!finite(d)) |
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errno = EDOM; |
348 |
> |
if (errno == 0) |
349 |
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if (isnan(d)) |
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errno = EDOM; |
351 |
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else if (isinf(d)) |
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errno = ERANGE; |
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#endif |
354 |
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if (errno) { |
354 |
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if (errno == EDOM || errno == ERANGE) { |
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wputs(fname); |
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wputs(": bad call\n"); |
356 |
> |
if (errno == EDOM) |
357 |
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wputs(": domain error\n"); |
358 |
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else if (errno == ERANGE) |
359 |
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wputs(": range error\n"); |
360 |
> |
else |
361 |
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wputs(": error in call\n"); |
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return(0.0); |
363 |
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} |
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errno = lasterrno; |
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{ |
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register int n; |
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n = argument(1) + .5; |
390 |
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n = (int)(argument(1) + .5); |
391 |
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if (n == 0) |
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return(nargum()-1); |
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if (n < 1 || n > nargum()-1) { |
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static double |
402 |
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l_rand() /* random function between 0 and 1 */ |
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{ |
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extern double floor(); |
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double x; |
405 |
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|
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x = argument(1); |
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static double |
415 |
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l_floor() /* return largest integer not greater than arg1 */ |
416 |
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{ |
440 |
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extern double floor(); |
441 |
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|
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return(floor(argument(1))); |
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} |
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|
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static double |
422 |
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l_ceil() /* return smallest integer not less than arg1 */ |
423 |
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{ |
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extern double ceil(); |
450 |
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|
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return(ceil(argument(1))); |
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} |
426 |
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|
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#ifdef BIGLIB |
428 |
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static double |
429 |
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l_sqrt() |
430 |
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{ |
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extern double sqrt(); |
460 |
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|
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return(sqrt(argument(1))); |
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} |
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|
435 |
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static double |
436 |
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l_sin() |
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{ |
468 |
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extern double sin(); |
469 |
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|
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return(sin(argument(1))); |
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} |
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|
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static double |
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l_cos() |
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{ |
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extern double cos(); |
478 |
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|
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return(cos(argument(1))); |
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} |
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|
449 |
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static double |
450 |
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l_tan() |
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{ |
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extern double tan(); |
487 |
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|
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return(tan(argument(1))); |
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} |
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|
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static double |
457 |
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l_asin() |
458 |
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{ |
495 |
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extern double asin(); |
496 |
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|
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return(asin(argument(1))); |
460 |
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} |
461 |
|
|
463 |
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static double |
464 |
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l_acos() |
465 |
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{ |
504 |
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extern double acos(); |
505 |
– |
|
466 |
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return(acos(argument(1))); |
467 |
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} |
468 |
|
|
470 |
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static double |
471 |
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l_atan() |
472 |
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{ |
513 |
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extern double atan(); |
514 |
– |
|
473 |
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return(atan(argument(1))); |
474 |
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} |
475 |
|
|
477 |
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static double |
478 |
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l_atan2() |
479 |
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{ |
522 |
– |
extern double atan2(); |
523 |
– |
|
480 |
|
return(atan2(argument(1), argument(2))); |
481 |
|
} |
482 |
|
|
484 |
|
static double |
485 |
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l_exp() |
486 |
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{ |
531 |
– |
extern double exp(); |
532 |
– |
|
487 |
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return(exp(argument(1))); |
488 |
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} |
489 |
|
|
491 |
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static double |
492 |
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l_log() |
493 |
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{ |
540 |
– |
extern double log(); |
541 |
– |
|
494 |
|
return(log(argument(1))); |
495 |
|
} |
496 |
|
|
498 |
|
static double |
499 |
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l_log10() |
500 |
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{ |
549 |
– |
extern double log10(); |
550 |
– |
|
501 |
|
return(log10(argument(1))); |
502 |
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} |
553 |
– |
#endif |