// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Linux / PA - RISC Project ( http : //www.parisc-linux.org/)
*
* Floating - point emulation code
* Copyright ( C ) 2001 Hewlett - Packard ( Paul Bame ) < bame @ debian . org >
*/
/*
* BEGIN_DESC
*
* File :
* @ ( # ) pa / fp / denormal . c $ Revision : $
*
* Purpose :
* < < please update with a synopsis of the functionality provided by this file > >
*
* External Interfaces :
* < < the following list was autogenerated , please review > >
* dbl_denormalize ( dbl_opndp1 , dbl_opndp2 , inexactflag , rmode )
* sgl_denormalize ( sgl_opnd , inexactflag , rmode )
*
* Internal Interfaces :
* < < please update > >
*
* Theory :
* < < please update with a overview of the operation of this file > >
*
* END_DESC
*/
#include "float.h"
#include "sgl_float.h"
#include "dbl_float.h"
#include "hppa.h"
#include <linux/kernel.h>
/* #include <machine/sys/mdep_private.h> */
#undef Fpustatus_register
#define Fpustatus_register Fpu_register[0 ]
void
sgl_denormalize(unsigned int *sgl_opnd, boolean *inexactflag, int rmode)
{
unsigned int opnd;
int sign, exponent;
boolean guardbit = FALSE , stickybit, inexact;
opnd = *sgl_opnd;
stickybit = *inexactflag;
exponent = Sgl_exponent(opnd) - SGL_WRAP;
sign = Sgl_sign(opnd);
Sgl_denormalize(opnd,exponent,guardbit,stickybit,inexact);
if (inexact) {
switch (rmode) {
case ROUNDPLUS:
if (sign == 0 ) {
Sgl_increment(opnd);
}
break ;
case ROUNDMINUS:
if (sign != 0 ) {
Sgl_increment(opnd);
}
break ;
case ROUNDNEAREST:
if (guardbit && (stickybit ||
Sgl_isone_lowmantissa(opnd))) {
Sgl_increment(opnd);
}
break ;
}
}
Sgl_set_sign(opnd,sign);
*sgl_opnd = opnd;
*inexactflag = inexact;
return ;
}
void
dbl_denormalize(unsigned int *dbl_opndp1,
unsigned int * dbl_opndp2,
boolean *inexactflag,
int rmode)
{
unsigned int opndp1, opndp2;
int sign, exponent;
boolean guardbit = FALSE , stickybit, inexact;
opndp1 = *dbl_opndp1;
opndp2 = *dbl_opndp2;
stickybit = *inexactflag;
exponent = Dbl_exponent(opndp1) - DBL_WRAP;
sign = Dbl_sign(opndp1);
Dbl_denormalize(opndp1,opndp2,exponent,guardbit,stickybit,inexact);
if (inexact) {
switch (rmode) {
case ROUNDPLUS:
if (sign == 0 ) {
Dbl_increment(opndp1,opndp2);
}
break ;
case ROUNDMINUS:
if (sign != 0 ) {
Dbl_increment(opndp1,opndp2);
}
break ;
case ROUNDNEAREST:
if (guardbit && (stickybit ||
Dbl_isone_lowmantissap2(opndp2))) {
Dbl_increment(opndp1,opndp2);
}
break ;
}
}
Dbl_set_sign(opndp1,sign);
*dbl_opndp1 = opndp1;
*dbl_opndp2 = opndp2;
*inexactflag = inexact;
return ;
}
Messung V0.5 in Prozent C=96 H=100 G=97
¤ Dauer der Verarbeitung: 0.8 Sekunden
(vorverarbeitet am 2026-09-30)
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