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#include <math.h> |
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#include <stdlib.h> |
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#include "rtmisc.h" |
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#include "rtio.h" |
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#include "rterror.h" |
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#include "calcomp.h" |
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|
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#define MAXLINE 256 /* maximum line length */ |
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|
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#define isdecimal(c) (isdigit(c) || (c) == '.') |
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|
40 |
< |
static double euminus(), eargument(), enumber(); |
41 |
< |
static double echannel(); |
42 |
< |
static double eadd(), esubtr(), emult(), edivi(), epow(); |
43 |
< |
static double ebotch(); |
40 |
> |
static double euminus(EPNODE *), eargument(EPNODE *), enumber(EPNODE *); |
41 |
> |
static double echannel(EPNODE *); |
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> |
static double eadd(EPNODE *), esubtr(EPNODE *), |
43 |
> |
emult(EPNODE *), edivi(EPNODE *), |
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> |
epow(EPNODE *); |
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> |
static double ebotch(EPNODE *); |
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|
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unsigned int esupport = /* what to support */ |
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E_VARIABLE | E_FUNCTION ; |
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|
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int eofc = 0; /* optional end-of-file character */ |
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int nextc; /* lookahead character */ |
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|
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double (*eoper[])() = { /* expression operations */ |
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double (*eoper[])(EPNODE *) = { /* expression operations */ |
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ebotch, |
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evariable, |
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enumber, |
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|
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EPNODE * |
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eparse(expr) /* parse an expression string */ |
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char *expr; |
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eparse( /* parse an expression string */ |
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char *expr |
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) |
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{ |
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EPNODE *ep; |
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double |
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eval(expr) /* evaluate an expression string */ |
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char *expr; |
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> |
eval( /* evaluate an expression string */ |
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char *expr |
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) |
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{ |
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register EPNODE *ep; |
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double rval; |
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|
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|
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int |
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epcmp(ep1, ep2) /* compare two expressions for equivalence */ |
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register EPNODE *ep1, *ep2; |
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> |
epcmp( /* compare two expressions for equivalence */ |
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> |
register EPNODE *ep1, |
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> |
register EPNODE *ep2 |
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) |
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{ |
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double d; |
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|
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if (ep2->v.num == 0) |
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return(ep1->v.num != 0); |
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d = ep1->v.num / ep2->v.num; |
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return(d > 1.000000000001 | d < 0.999999999999); |
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return((d > 1.000000000001) | (d < 0.999999999999)); |
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|
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case CHAN: |
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case ARG: |
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case ':': |
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return(epcmp(ep1->v.kid->sibling, ep2->v.kid->sibling)); |
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|
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case TICK: |
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case CLKT: |
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case SYM: /* should never get this one */ |
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return(0); |
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void |
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epfree(epar) /* free a parse tree */ |
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register EPNODE *epar; |
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> |
epfree( /* free a parse tree */ |
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> |
register EPNODE *epar |
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> |
) |
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{ |
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register EPNODE *ep; |
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|
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case NUM: |
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case CHAN: |
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case ARG: |
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< |
case TICK: |
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> |
case CLKT: |
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break; |
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default: |
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|
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/* the following used to be a switch */ |
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static double |
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< |
eargument(ep) |
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< |
EPNODE *ep; |
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> |
eargument( |
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> |
EPNODE *ep |
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> |
) |
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{ |
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return(argument(ep->v.chan)); |
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} |
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|
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static double |
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enumber(ep) |
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< |
EPNODE *ep; |
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> |
enumber( |
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> |
EPNODE *ep |
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> |
) |
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{ |
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return(ep->v.num); |
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} |
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|
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static double |
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< |
euminus(ep) |
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< |
EPNODE *ep; |
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> |
euminus( |
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> |
EPNODE *ep |
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> |
) |
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{ |
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register EPNODE *ep1 = ep->v.kid; |
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} |
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static double |
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< |
echannel(ep) |
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< |
EPNODE *ep; |
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> |
echannel( |
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> |
EPNODE *ep |
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> |
) |
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{ |
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return(chanvalue(ep->v.chan)); |
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} |
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|
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static double |
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< |
eadd(ep) |
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< |
EPNODE *ep; |
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> |
eadd( |
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> |
EPNODE *ep |
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> |
) |
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{ |
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register EPNODE *ep1 = ep->v.kid; |
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|
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} |
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|
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static double |
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< |
esubtr(ep) |
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< |
EPNODE *ep; |
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> |
esubtr( |
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> |
EPNODE *ep |
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> |
) |
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{ |
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register EPNODE *ep1 = ep->v.kid; |
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|
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} |
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|
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static double |
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< |
emult(ep) |
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< |
EPNODE *ep; |
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> |
emult( |
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> |
EPNODE *ep |
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> |
) |
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{ |
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register EPNODE *ep1 = ep->v.kid; |
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|
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} |
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|
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static double |
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edivi(ep) |
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< |
EPNODE *ep; |
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> |
edivi( |
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> |
EPNODE *ep |
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> |
) |
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{ |
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register EPNODE *ep1 = ep->v.kid; |
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double d; |
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} |
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|
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static double |
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< |
epow(ep) |
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< |
EPNODE *ep; |
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> |
epow( |
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> |
EPNODE *ep |
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> |
) |
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{ |
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register EPNODE *ep1 = ep->v.kid; |
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double d; |
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lasterrno = errno; |
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errno = 0; |
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d = pow(evalue(ep1), evalue(ep1->sibling)); |
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< |
#ifdef IEEE |
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< |
if (!finite(d)) |
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< |
errno = EDOM; |
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> |
#ifdef isnan |
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> |
if (errno == 0) |
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> |
if (isnan(d)) |
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> |
errno = EDOM; |
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> |
else if (isinf(d)) |
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> |
errno = ERANGE; |
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#endif |
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if (errno == EDOM || errno == ERANGE) { |
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wputs("Illegal power\n"); |
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} |
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|
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static double |
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< |
ebotch(ep) |
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< |
EPNODE *ep; |
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> |
ebotch( |
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> |
EPNODE *ep |
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> |
) |
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{ |
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eputs("Bad expression!\n"); |
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quit(1); |
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|
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|
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EPNODE * |
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< |
ekid(ep, n) /* return pointer to a node's nth kid */ |
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< |
register EPNODE *ep; |
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< |
register int n; |
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> |
ekid( /* return pointer to a node's nth kid */ |
325 |
> |
register EPNODE *ep, |
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> |
register int n |
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> |
) |
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{ |
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for (ep = ep->v.kid; ep != NULL; ep = ep->sibling) |
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|
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|
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int |
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< |
nekids(ep) /* return # of kids for node ep */ |
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< |
register EPNODE *ep; |
339 |
> |
nekids( /* return # of kids for node ep */ |
340 |
> |
register EPNODE *ep |
341 |
> |
) |
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{ |
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register int n = 0; |
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|
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|
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|
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void |
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< |
initfile(fp, fn, ln) /* prepare input file */ |
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< |
FILE *fp; |
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< |
char *fn; |
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< |
int ln; |
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> |
initfile( /* prepare input file */ |
354 |
> |
FILE *fp, |
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> |
char *fn, |
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> |
int ln |
357 |
> |
) |
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{ |
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static char inpbuf[MAXLINE]; |
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|
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|
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|
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void |
372 |
< |
initstr(s, fn, ln) /* prepare input string */ |
373 |
< |
char *s; |
374 |
< |
char *fn; |
375 |
< |
int ln; |
372 |
> |
initstr( /* prepare input string */ |
373 |
> |
char *s, |
374 |
> |
char *fn, |
375 |
> |
int ln |
376 |
> |
) |
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{ |
378 |
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infp = NULL; |
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infile = fn; |
385 |
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|
386 |
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|
387 |
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void |
388 |
< |
getscanpos(fnp, lnp, spp, fpp) /* return current scan position */ |
389 |
< |
char **fnp; |
390 |
< |
int *lnp; |
391 |
< |
char **spp; |
392 |
< |
FILE **fpp; |
388 |
> |
getscanpos( /* return current scan position */ |
389 |
> |
char **fnp, |
390 |
> |
int *lnp, |
391 |
> |
char **spp, |
392 |
> |
FILE **fpp |
393 |
> |
) |
394 |
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{ |
395 |
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if (fnp != NULL) *fnp = infile; |
396 |
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if (lnp != NULL) *lnp = lineno; |
400 |
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|
401 |
|
|
402 |
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int |
403 |
< |
scan() /* scan next character, return literal next */ |
403 |
> |
scan(void) /* scan next character, return literal next */ |
404 |
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{ |
405 |
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register int lnext = 0; |
406 |
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|
417 |
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nextc = linbuf[linepos++]; |
418 |
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if (!lnext) |
419 |
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lnext = nextc; |
420 |
+ |
if (nextc == eofc) { |
421 |
+ |
nextc = EOF; |
422 |
+ |
break; |
423 |
+ |
} |
424 |
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if (nextc == '{') { |
425 |
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scan(); |
426 |
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while (nextc != '}') |
436 |
|
|
437 |
|
|
438 |
|
char * |
439 |
< |
long2ascii(l) /* convert long to ascii */ |
440 |
< |
long l; |
439 |
> |
long2ascii( /* convert long to ascii */ |
440 |
> |
long l |
441 |
> |
) |
442 |
|
{ |
443 |
|
static char buf[16]; |
444 |
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register char *cp; |
463 |
|
|
464 |
|
|
465 |
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void |
466 |
< |
syntax(err) /* report syntax error and quit */ |
467 |
< |
char *err; |
466 |
> |
syntax( /* report syntax error and quit */ |
467 |
> |
char *err |
468 |
> |
) |
469 |
|
{ |
470 |
|
register int i; |
471 |
|
|
490 |
|
|
491 |
|
|
492 |
|
void |
493 |
< |
addekid(ep, ekid) /* add a child to ep */ |
494 |
< |
register EPNODE *ep; |
495 |
< |
EPNODE *ekid; |
493 |
> |
addekid( /* add a child to ep */ |
494 |
> |
register EPNODE *ep, |
495 |
> |
EPNODE *ekid |
496 |
> |
) |
497 |
|
{ |
498 |
|
if (ep->v.kid == NULL) |
499 |
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ep->v.kid = ekid; |
507 |
|
|
508 |
|
|
509 |
|
char * |
510 |
< |
getname() /* scan an identifier */ |
510 |
> |
getname(void) /* scan an identifier */ |
511 |
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{ |
512 |
|
static char str[RMAXWORD+1]; |
513 |
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register int i, lnext; |
524 |
|
|
525 |
|
|
526 |
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int |
527 |
< |
getinum() /* scan a positive integer */ |
527 |
> |
getinum(void) /* scan a positive integer */ |
528 |
|
{ |
529 |
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register int n, lnext; |
530 |
|
|
539 |
|
|
540 |
|
|
541 |
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double |
542 |
< |
getnum() /* scan a positive float */ |
542 |
> |
getnum(void) /* scan a positive float */ |
543 |
|
{ |
544 |
|
register int i, lnext; |
545 |
|
char str[RMAXWORD+1]; |
560 |
|
lnext = scan(); |
561 |
|
} |
562 |
|
} |
563 |
< |
if ((lnext == 'e' | lnext == 'E') && i < RMAXWORD) { |
563 |
> |
if ((lnext == 'e') | (lnext == 'E') && i < RMAXWORD) { |
564 |
|
str[i++] = lnext; |
565 |
|
lnext = scan(); |
566 |
< |
if ((lnext == '-' | lnext == '+') && i < RMAXWORD) { |
566 |
> |
if ((lnext == '-') | (lnext == '+') && i < RMAXWORD) { |
567 |
|
str[i++] = lnext; |
568 |
|
lnext = scan(); |
569 |
|
} |
581 |
|
|
582 |
|
|
583 |
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EPNODE * |
584 |
< |
getE1() /* E1 -> E1 ADDOP E2 */ |
584 |
> |
getE1(void) /* E1 -> E1 ADDOP E2 */ |
585 |
|
/* E2 */ |
586 |
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{ |
587 |
|
register EPNODE *ep1, *ep2; |
603 |
|
|
604 |
|
|
605 |
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EPNODE * |
606 |
< |
getE2() /* E2 -> E2 MULOP E3 */ |
606 |
> |
getE2(void) /* E2 -> E2 MULOP E3 */ |
607 |
|
/* E3 */ |
608 |
|
{ |
609 |
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register EPNODE *ep1, *ep2; |
625 |
|
|
626 |
|
|
627 |
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EPNODE * |
628 |
< |
getE3() /* E3 -> E4 ^ E3 */ |
628 |
> |
getE3(void) /* E3 -> E4 ^ E3 */ |
629 |
|
/* E4 */ |
630 |
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{ |
631 |
|
register EPNODE *ep1, *ep2; |
647 |
|
|
648 |
|
|
649 |
|
EPNODE * |
650 |
< |
getE4() /* E4 -> ADDOP E5 */ |
650 |
> |
getE4(void) /* E4 -> ADDOP E5 */ |
651 |
|
/* E5 */ |
652 |
|
{ |
653 |
|
register EPNODE *ep1, *ep2; |
675 |
|
|
676 |
|
|
677 |
|
EPNODE * |
678 |
< |
getE5() /* E5 -> (E1) */ |
678 |
> |
getE5(void) /* E5 -> (E1) */ |
679 |
|
/* VAR */ |
680 |
|
/* NUM */ |
681 |
|
/* $N */ |
753 |
|
|
754 |
|
|
755 |
|
EPNODE * |
756 |
< |
rconst(epar) /* reduce a constant expression */ |
757 |
< |
register EPNODE *epar; |
756 |
> |
rconst( /* reduce a constant expression */ |
757 |
> |
register EPNODE *epar |
758 |
> |
) |
759 |
|
{ |
760 |
|
register EPNODE *ep; |
761 |
|
|
772 |
|
|
773 |
|
|
774 |
|
int |
775 |
< |
isconstvar(ep) /* is ep linked to a constant expression? */ |
776 |
< |
register EPNODE *ep; |
775 |
> |
isconstvar( /* is ep linked to a constant expression? */ |
776 |
> |
register EPNODE *ep |
777 |
> |
) |
778 |
|
{ |
779 |
|
register EPNODE *ep1; |
780 |
|
|
798 |
|
|
799 |
|
|
800 |
|
int |
801 |
< |
isconstfun(ep) /* is ep linked to a constant function? */ |
802 |
< |
register EPNODE *ep; |
801 |
> |
isconstfun( /* is ep linked to a constant function? */ |
802 |
> |
register EPNODE *ep |
803 |
> |
) |
804 |
|
{ |
805 |
|
register EPNODE *dp; |
806 |
|
register LIBR *lp; |
807 |
|
|
808 |
|
if (ep->type != VAR) |
809 |
|
return(0); |
810 |
< |
if ((dp = ep->v.ln->def) != NULL) |
810 |
> |
if ((dp = ep->v.ln->def) != NULL) { |
811 |
|
if (dp->v.kid->type == FUNC) |
812 |
|
return(dp->type == ':'); |
813 |
|
else |
814 |
|
return(0); /* don't identify masked library functions */ |
815 |
+ |
} |
816 |
|
if ((lp = ep->v.ln->lib) != NULL) |
817 |
|
return(lp->atyp == ':'); |
818 |
|
return(0); |