mirror of https://github.com/python/cpython
Removed unused files.
This commit is contained in:
Eric Smith
parent
3370cce4dd
commit
241cb4cff5
|
|
@ -1,50 +0,0 @@
|
||||||
|
|
||||||
/* Just in case you haven't got an atof() around...
|
|
||||||
This one doesn't check for bad syntax or overflow,
|
|
||||||
and is slow and inaccurate.
|
|
||||||
But it's good enough for the occasional string literal... */
|
|
||||||
|
|
||||||
#include "pyconfig.h"
|
|
||||||
|
|
||||||
#include <ctype.h>
|
|
||||||
|
|
||||||
double atof(char *s)
|
|
||||||
{
|
|
||||||
double a = 0.0;
|
|
||||||
int e = 0;
|
|
||||||
int c;
|
|
||||||
while ((c = *s++) != '\0' && isdigit(c)) {
|
|
||||||
a = a*10.0 + (c - '0');
|
|
||||||
}
|
|
||||||
if (c == '.') {
|
|
||||||
while ((c = *s++) != '\0' && isdigit(c)) {
|
|
||||||
a = a*10.0 + (c - '0');
|
|
||||||
e = e-1;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if (c == 'e' || c == 'E') {
|
|
||||||
int sign = 1;
|
|
||||||
int i = 0;
|
|
||||||
c = *s++;
|
|
||||||
if (c == '+')
|
|
||||||
c = *s++;
|
|
||||||
else if (c == '-') {
|
|
||||||
c = *s++;
|
|
||||||
sign = -1;
|
|
||||||
}
|
|
||||||
while (isdigit(c)) {
|
|
||||||
i = i*10 + (c - '0');
|
|
||||||
c = *s++;
|
|
||||||
}
|
|
||||||
e += i*sign;
|
|
||||||
}
|
|
||||||
while (e > 0) {
|
|
||||||
a *= 10.0;
|
|
||||||
e--;
|
|
||||||
}
|
|
||||||
while (e < 0) {
|
|
||||||
a *= 0.1;
|
|
||||||
e++;
|
|
||||||
}
|
|
||||||
return a;
|
|
||||||
}
|
|
||||||
156
Python/strtod.c
156
Python/strtod.c
|
|
@ -1,156 +0,0 @@
|
||||||
#include "pyconfig.h"
|
|
||||||
|
|
||||||
/* comp.sources.misc strtod(), as posted in comp.lang.tcl,
|
|
||||||
with bugfix for "123000.0" and acceptance of space after 'e' sign nuked.
|
|
||||||
|
|
||||||
************************************************************
|
|
||||||
* YOU MUST EDIT THE MACHINE-DEPENDENT DEFINITIONS BELOW!!! *
|
|
||||||
************************************************************
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* File : stdtod.c (Modified version of str2dbl.c)
|
|
||||||
Author : Richard A. O'Keefe @ Quintus Computer Systems, Inc.
|
|
||||||
Updated: Tuesday August 2nd, 1988
|
|
||||||
Defines: double strtod (char *str, char**ptr)
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* This is an implementation of the strtod() function described in the
|
|
||||||
System V manuals, with a different name to avoid linker problems.
|
|
||||||
All that str2dbl() does itself is check that the argument is well-formed
|
|
||||||
and is in range. It leaves the work of conversion to atof(), which is
|
|
||||||
assumed to exist and deliver correct results (if they can be represented).
|
|
||||||
|
|
||||||
There are two reasons why this should be provided to the net:
|
|
||||||
(a) some UNIX systems do not yet have strtod(), or do not have it
|
|
||||||
available in the BSD "universe" (but they do have atof()).
|
|
||||||
(b) some of the UNIX systems that *do* have it get it wrong.
|
|
||||||
(some crash with large arguments, some assign the wrong *ptr value).
|
|
||||||
There is a reason why *we* are providing it: we need a correct version
|
|
||||||
of strtod(), and if we give this one away maybe someone will look for
|
|
||||||
mistakes in it and fix them for us (:-).
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* The following constants are machine-specific. MD{MIN,MAX}EXPT are
|
|
||||||
integers and MD{MIN,MAX}FRAC are strings such that
|
|
||||||
0.${MDMAXFRAC}e${MDMAXEXPT} is the largest representable double,
|
|
||||||
0.${MDMINFRAC}e${MDMINEXPT} is the smallest representable +ve double
|
|
||||||
MD{MIN,MAX}FRAC must not have any trailing zeros.
|
|
||||||
The values here are for IEEE-754 64-bit floats.
|
|
||||||
It is not perfectly clear to me whether an IEEE infinity should be
|
|
||||||
returned for overflow, nor what a portable way of writing one is,
|
|
||||||
so HUGE is just 0.MAXFRAC*10**MAXEXPT (this seems still to be the
|
|
||||||
UNIX convention).
|
|
||||||
|
|
||||||
I do know about <values.h>, but the whole point of this file is that
|
|
||||||
we can't always trust that stuff to be there or to be correct.
|
|
||||||
*/
|
|
||||||
static int MDMINEXPT = -323;
|
|
||||||
static char MDMINFRAC[] = "494065645841246544";
|
|
||||||
static double ZERO = 0.0;
|
|
||||||
|
|
||||||
static int MDMAXEXPT = 309;
|
|
||||||
static char MDMAXFRAC[] = "17976931348623157";
|
|
||||||
static double HUGE = 1.7976931348623157e308;
|
|
||||||
|
|
||||||
extern double atof(const char *); /* Only called when result known to be ok */
|
|
||||||
|
|
||||||
#ifdef HAVE_ERRNO_H
|
|
||||||
#include <errno.h>
|
|
||||||
#endif
|
|
||||||
extern int errno;
|
|
||||||
|
|
||||||
double strtod(char *str, char **ptr)
|
|
||||||
{
|
|
||||||
int sign, scale, dotseen;
|
|
||||||
int esign, expt;
|
|
||||||
char *save;
|
|
||||||
register char *sp, *dp;
|
|
||||||
register int c;
|
|
||||||
char *buforg, *buflim;
|
|
||||||
char buffer[64]; /* 45-digit significant + */
|
|
||||||
/* 13-digit exponent */
|
|
||||||
sp = str;
|
|
||||||
while (*sp == ' ') sp++;
|
|
||||||
sign = 1;
|
|
||||||
if (*sp == '-') sign -= 2, sp++;
|
|
||||||
dotseen = 0, scale = 0;
|
|
||||||
dp = buffer;
|
|
||||||
*dp++ = '0'; *dp++ = '.';
|
|
||||||
buforg = dp, buflim = buffer+48;
|
|
||||||
for (save = sp; c = *sp; sp++)
|
|
||||||
if (c == '.') {
|
|
||||||
if (dotseen) break;
|
|
||||||
dotseen++;
|
|
||||||
} else
|
|
||||||
if ((unsigned)(c-'0') > (unsigned)('9'-'0')) {
|
|
||||||
break;
|
|
||||||
} else
|
|
||||||
if (c == '0') {
|
|
||||||
if (dp != buforg) {
|
|
||||||
/* This is not the first digit, so we want to keep it */
|
|
||||||
if (dp < buflim) *dp++ = c;
|
|
||||||
if (!dotseen) scale++;
|
|
||||||
} else {
|
|
||||||
/* No non-zero digits seen yet */
|
|
||||||
/* If a . has been seen, scale must be adjusted */
|
|
||||||
if (dotseen) scale--;
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
/* This is a nonzero digit, so we want to keep it */
|
|
||||||
if (dp < buflim) *dp++ = c;
|
|
||||||
/* If it precedes a ., scale must be adjusted */
|
|
||||||
if (!dotseen) scale++;
|
|
||||||
}
|
|
||||||
if (sp == save) {
|
|
||||||
if (ptr) *ptr = str;
|
|
||||||
errno = EDOM; /* what should this be? */
|
|
||||||
return ZERO;
|
|
||||||
}
|
|
||||||
|
|
||||||
while (dp > buforg && dp[-1] == '0') --dp;
|
|
||||||
if (dp == buforg) *dp++ = '0';
|
|
||||||
*dp = '\0';
|
|
||||||
/* Now the contents of buffer are
|
|
||||||
+--+--------+-+--------+
|
|
||||||
|0.|fraction|\|leftover|
|
|
||||||
+--+--------+-+--------+
|
|
||||||
^dp points here
|
|
||||||
where fraction begins with 0 iff it is "0", and has at most
|
|
||||||
45 digits in it, and leftover is at least 16 characters.
|
|
||||||
*/
|
|
||||||
save = sp, expt = 0, esign = 1;
|
|
||||||
do {
|
|
||||||
c = *sp++;
|
|
||||||
if (c != 'e' && c != 'E') break;
|
|
||||||
c = *sp++;
|
|
||||||
if (c == '-') esign -= 2, c = *sp++; else
|
|
||||||
if (c == '+' /* || c == ' ' */ ) c = *sp++;
|
|
||||||
if ((unsigned)(c-'0') > (unsigned)('9'-'0')) break;
|
|
||||||
while (c == '0') c = *sp++;
|
|
||||||
for (; (unsigned)(c-'0') <= (unsigned)('9'-'0'); c = *sp++)
|
|
||||||
expt = expt*10 + c-'0';
|
|
||||||
if (esign < 0) expt = -expt;
|
|
||||||
save = sp-1;
|
|
||||||
} while (0);
|
|
||||||
if (ptr) *ptr = save;
|
|
||||||
expt += scale;
|
|
||||||
/* Now the number is sign*0.fraction*10**expt */
|
|
||||||
errno = ERANGE;
|
|
||||||
if (expt > MDMAXEXPT) {
|
|
||||||
return HUGE*sign;
|
|
||||||
} else
|
|
||||||
if (expt == MDMAXEXPT) {
|
|
||||||
if (strcmp(buforg, MDMAXFRAC) > 0) return HUGE*sign;
|
|
||||||
} else
|
|
||||||
if (expt < MDMINEXPT) {
|
|
||||||
return ZERO*sign;
|
|
||||||
} else
|
|
||||||
if (expt == MDMINEXPT) {
|
|
||||||
if (strcmp(buforg, MDMINFRAC) < 0) return ZERO*sign;
|
|
||||||
}
|
|
||||||
/* We have now established that the number can be */
|
|
||||||
/* represented without overflow or underflow */
|
|
||||||
(void) sprintf(dp, "E%d", expt);
|
|
||||||
errno = 0;
|
|
||||||
return atof(buffer)*sign;
|
|
||||||
}
|
|
||||||
Loading…
Reference in New Issue