newlib-cygwin/newlib/libm/machine/i386/f_rintl.c

39 lines
885 B
C

/*
* ====================================================
* x87 FP implementation contributed to Newlib by
* Dave Korn, November 2007. This file is placed in the
* public domain. Permission to use, copy, modify, and
* distribute this software is freely granted.
* ====================================================
*/
#ifdef __GNUC__
#if !defined(_SOFT_FLOAT)
#include <math.h>
/*
* Fast math version of rintl(x)
* Return x rounded to integral value according to the prevailing
* rounding mode.
* Method:
* Using inline x87 asms.
* Exception:
* Governed by x87 FPCR.
*/
long double _f_rintl (long double x)
{
long double _result;
asm ("frndint" : "=t" (_result) : "0" (x));
return _result;
}
/* For now, we only have the fast math version. */
long double rintl (long double x) {
return _f_rintl(x);
}
#endif /* !_SOFT_FLOAT */
#endif /* __GNUC__ */