33 lines
655 B
C
33 lines
655 B
C
/* $NetBSD: fpgetsticky.c,v 1.3 1997/07/13 18:45:34 christos Exp $ */
|
|
|
|
/*
|
|
* Written by J.T. Conklin, Apr 11, 1995
|
|
* Public domain.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: fpgetsticky.c,v 1.3 1997/07/13 18:45:34 christos Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <ieeefp.h>
|
|
#include <machine/cpufunc.h>
|
|
#include <machine/fpu.h>
|
|
|
|
fp_except
|
|
fpgetsticky()
|
|
{
|
|
fp_except x;
|
|
fp_except ebits = FPC_IEN | FPC_OVE | FPC_IVE | FPC_DZE | FPC_UNDE;
|
|
|
|
sfsr(x);
|
|
/* Map FPC_UF to soft underflow enable */
|
|
if (x & FPC_UF)
|
|
x |= FPC_UNDE << 1;
|
|
else
|
|
x &= ~(FPC_UNDE << 1);
|
|
x >>= 1;
|
|
|
|
return x & ebits;
|
|
}
|