JehanneOS/newlib
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

2000-12-13 Jeff Johnston <jjohnstn@redhat.com>

Browse Source 
* libc/stdlib/ldtoa.c (_ldcheck): New routine
        that categorizes a long double as NaN, Infinity, or other.
        * libc/stdio/vfprintf.c [WANT_IO_LONG_DBL](_VFPRINTF_R): Removed
        isinfl and isnanl static routines which were i386-specific.  Changed
        calls to the two removed routines to a single _ldcheck call.
        * libc/stdio/vfieeefp.h (ldieee): Fixed missing semi-colons.
This commit is contained in:
Jeff Johnston
2000-12-14 00:25:06 +00:00
parent adbbb0348c
commit b6182a09dd
4 changed files with 60 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
newlib/libc/stdlib/ldtoa.c
View File

@ -13,6 +13,7 @@
/* linux name: long double _IO_strtold (char *, char **); */
long double _strtold (char *, char **);
char * _ldtoa_r (struct _reent *, long double, int, int, int *, int *, char **);
int _ldcheck (long double *);
#if 0
void _IO_ldtostr(long double *, char *, int, int, char);
#endif
@ -2826,6 +2827,46 @@ if( rve )
return outstr;
}
/* Routine used to tell if long double is NaN or Infinity or regular number.
Returns: 0 = regular number
1 = Nan
2 = Infinity
*/
int
_ldcheck (long double *d)
{
unsigned short e[NI];
char *s, *p;
int k;
LDPARMS rnd;
LDPARMS *ldp = &rnd;
char *outstr;
rnd.rlast = -1;
rnd.rndprc = NBITS;
#if LDBL_MANT_DIG == 24
e24toe( (unsigned short *)d, e, ldp );
#elif LDBL_MANT_DIG == 53
e53toe( (unsigned short *)d, e, ldp );
#elif LDBL_MANT_DIG == 64
e64toe( (unsigned short *)d, e, ldp );
#else
e113toe( (unsigned short *)d, e, ldp );
#endif
if( (e[NE-1] & 0x7fff) == 0x7fff )
{
#ifdef NANS
if( eisnan(e) )
return( 1 );
#endif
return( 2 );
}
else
return( 0 );
} /* _ldcheck */
static void etoasc(short unsigned int *x, char *string, int ndigits, int outformat, LDPARMS *ldp)
{
long digit;