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#ifdef __SPE__
#include <_ansi.h>
#include <limits.h>
#include <errno.h>
#include <stdlib.h>
#include <reent.h>
#include "vfieeefp.h"
/*
* Convert a string to a fixed-point (sign + 31-bits) value.
*
* Ignores `locale' stuff.
*/
__int32_t
_DEFUN (_strtosfix32_r, (rptr, nptr, endptr),
struct _reent *rptr _AND
_CONST char *nptr _AND
char **endptr)
{
union double_union dbl;
int exp, negexp, sign;
unsigned long tmp, tmp2;
long result = 0;
dbl.d = _strtod_r (rptr, nptr, endptr);
/* treat NAN as domain error, +/- infinity as saturation */
if (!finite(dbl.d))
{
if (isnan (dbl.d))
{
rptr->_errno = EDOM;
return 0;
}
rptr->_errno = ERANGE;
if (word0(dbl) & Sign_bit)
return LONG_MIN;
return LONG_MAX;
}
/* check for normal saturation */
if (dbl.d >= 1.0)
{
rptr->_errno = ERANGE;
return LONG_MAX;
}
else if (dbl.d < -1.0)
{
rptr->_errno = ERANGE;
return LONG_MIN;
}
/* otherwise we have normal number in range */
/* strip off sign and exponent */
sign = word0(dbl) & Sign_bit;
exp = ((word0(dbl) & Exp_mask) >> Exp_shift) - Bias;
negexp = -exp;
if (negexp > 31)
return 0;
word0(dbl) &= ~(Exp_mask | Sign_bit);
/* add in implicit normalized bit */
word0(dbl) |= Exp_msk1;
/* shift so result is contained in single word */
tmp = word0(dbl) << Ebits;
tmp |= ((unsigned long)word1(dbl) >> (32 - Ebits));
if (negexp != 0)
{
/* perform rounding */
tmp2 = tmp + (1 << (negexp - 1));
result = (long)(tmp2 >> negexp);
/* check if rounding caused carry bit which must be added into result */
if (tmp2 < tmp)
result |= (1 << (32 - negexp));
/* check if positive saturation has occurred because of rounding */
if (!sign && result < 0)
{
rptr->_errno = ERANGE;
return LONG_MAX;
}
}
else
{
/* we have -1.0, no rounding necessary */
return LONG_MIN;
}
return sign ? -result : result;
}
#ifndef _REENT_ONLY
__int32_t
_DEFUN (strtosfix32, (s, ptr, base),
_CONST char *s _AND
char **ptr)
{
return _strtosfix32_r (_REENT, s, ptr);
}
#endif
#endif /* __SPE__ */
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