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|
#include "f2c.h"
#include "fio.h"
#ifndef KR_headers
#undef abs
#undef min
#undef max
#include "stdlib.h"
#include "string.h"
#endif
#include "fmt.h"
#include "fp.h"
#ifndef VAX
#include "ctype_.h"
#ifdef __cplusplus
extern "C" {
#endif
#endif
int
#ifdef KR_headers
wrt_E(p,w,d,e,len) ufloat *p; ftnlen len;
#else
wrt_E(ufloat *p, int w, int d, int e, ftnlen len)
#endif
{
char buf[FMAX+EXPMAXDIGS+4], *s, *se;
int d1, delta, e1, i, sign, signspace;
double dd;
#ifdef WANT_LEAD_0
int insert0 = 0;
#endif
#ifndef VAX
int e0 = e;
#endif
if(e <= 0)
e = 2;
if(f__scale) {
if(f__scale >= d + 2 || f__scale <= -d)
goto nogood;
}
if(f__scale <= 0)
--d;
if (len == sizeof(real))
dd = p->pf;
else
dd = p->pd;
if (dd < 0.) {
signspace = sign = 1;
dd = -dd;
}
else {
sign = 0;
signspace = (int)f__cplus;
#ifndef VAX
if (!dd) {
#ifdef SIGNED_ZEROS
if (signbit_f2c(&dd))
signspace = sign = 1;
#endif
dd = 0.; /* avoid -0 */
}
#endif
}
delta = w - (2 /* for the . and the d adjustment above */
+ 2 /* for the E+ */ + signspace + d + e);
#ifdef WANT_LEAD_0
if (f__scale <= 0 && delta > 0) {
delta--;
insert0 = 1;
}
else
#endif
if (delta < 0) {
nogood:
while(--w >= 0)
PUT('*');
return(0);
}
if (f__scale < 0)
d += f__scale;
if (d > FMAX) {
d1 = d - FMAX;
d = FMAX;
}
else
d1 = 0;
sprintf(buf,"%#.*E", d, dd);
#ifndef VAX
/* check for NaN, Infinity */
if (!isdigit(buf[0])) {
switch(buf[0]) {
case 'n':
case 'N':
signspace = 0; /* no sign for NaNs */
}
delta = w - strlen(buf) - signspace;
if (delta < 0)
goto nogood;
while(--delta >= 0)
PUT(' ');
if (signspace)
PUT(sign ? '-' : '+');
for(s = buf; *s; s++)
PUT(*s);
return 0;
}
#endif
se = buf + d + 3;
#ifdef GOOD_SPRINTF_EXPONENT /* When possible, exponent has 2 digits. */
if (f__scale != 1 && dd)
sprintf(se, "%+.2d", atoi(se) + 1 - f__scale);
#else
if (dd)
sprintf(se, "%+.2d", atoi(se) + 1 - f__scale);
else
strcpy(se, "+00");
#endif
s = ++se;
if (e < 2) {
if (*s != '0')
goto nogood;
}
#ifndef VAX
/* accommodate 3 significant digits in exponent */
if (s[2]) {
#ifdef Pedantic
if (!e0 && !s[3])
for(s -= 2, e1 = 2; s[0] = s[1]; s++);
/* Pedantic gives the behavior that Fortran 77 specifies, */
/* i.e., requires that E be specified for exponent fields */
/* of more than 3 digits. With Pedantic undefined, we get */
/* the behavior that Cray displays -- you get a bigger */
/* exponent field if it fits. */
#else
if (!e0) {
for(s -= 2, e1 = 2; s[0] = s[1]; s++)
#ifdef CRAY
delta--;
if ((delta += 4) < 0)
goto nogood
#endif
;
}
#endif
else if (e0 >= 0)
goto shift;
else
e1 = e;
}
else
shift:
#endif
for(s += 2, e1 = 2; *s; ++e1, ++s)
if (e1 >= e)
goto nogood;
while(--delta >= 0)
PUT(' ');
if (signspace)
PUT(sign ? '-' : '+');
s = buf;
i = f__scale;
if (f__scale <= 0) {
#ifdef WANT_LEAD_0
if (insert0)
PUT('0');
#endif
PUT('.');
for(; i < 0; ++i)
PUT('0');
PUT(*s);
s += 2;
}
else if (f__scale > 1) {
PUT(*s);
s += 2;
while(--i > 0)
PUT(*s++);
PUT('.');
}
if (d1) {
se -= 2;
while(s < se) PUT(*s++);
se += 2;
do PUT('0'); while(--d1 > 0);
}
while(s < se)
PUT(*s++);
if (e < 2)
PUT(s[1]);
else {
while(++e1 <= e)
PUT('0');
while(*s)
PUT(*s++);
}
return 0;
}
int
#ifdef KR_headers
wrt_F(p,w,d,len) ufloat *p; ftnlen len;
#else
wrt_F(ufloat *p, int w, int d, ftnlen len)
#endif
{
int d1, sign, n;
double x;
char *b, buf[MAXINTDIGS+MAXFRACDIGS+4], *s;
x= (len==sizeof(real)?p->pf:p->pd);
if (d < MAXFRACDIGS)
d1 = 0;
else {
d1 = d - MAXFRACDIGS;
d = MAXFRACDIGS;
}
if (x < 0.)
{ x = -x; sign = 1; }
else {
sign = 0;
#ifndef VAX
if (!x) {
#ifdef SIGNED_ZEROS
if (signbit_f2c(&x))
sign = 2;
#endif
x = 0.;
}
#endif
}
if (n = f__scale)
if (n > 0)
do x *= 10.; while(--n > 0);
else
do x *= 0.1; while(++n < 0);
#ifdef USE_STRLEN
sprintf(b = buf, "%#.*f", d, x);
n = strlen(b) + d1;
#else
n = sprintf(b = buf, "%#.*f", d, x) + d1;
#endif
#ifndef WANT_LEAD_0
if (buf[0] == '0' && d)
{ ++b; --n; }
#endif
if (sign == 1) {
/* check for all zeros */
for(s = b;;) {
while(*s == '0') s++;
switch(*s) {
case '.':
s++; continue;
case 0:
sign = 0;
}
break;
}
}
if (sign || f__cplus)
++n;
if (n > w) {
#ifdef WANT_LEAD_0
if (buf[0] == '0' && --n == w)
++b;
else
#endif
{
while(--w >= 0)
PUT('*');
return 0;
}
}
for(w -= n; --w >= 0; )
PUT(' ');
if (sign)
PUT('-');
else if (f__cplus)
PUT('+');
while(n = *b++)
PUT(n);
while(--d1 >= 0)
PUT('0');
return 0;
}
#ifdef __cplusplus
}
#endif
|
