bring over our mods; the cnv*c have a problem now, described in the osf version of the cnv_float.h, at the end

1 files changed, 161 insertions, 98 deletions

diff --git a/sys/arch/hppa/spmath/fcnvfx.c b/sys/arch/hppa/spmath/fcnvfx.c
index c646d8dffaa..397596d8a9e 100644
--- a/sys/arch/hppa/spmath/fcnvfx.c
+++ b/sys/arch/hppa/spmath/fcnvfx.c
@@ -1,48 +1,23 @@
-/*	$OpenBSD: fcnvfx.c,v 1.5 2001/03/29 03:58:18 mickey Exp $	*/
-
-/*
- * Copyright 1996 1995 by Open Software Foundation, Inc.
- *              All Rights Reserved
- *
- * Permission to use, copy, modify, and distribute this software and
- * its documentation for any purpose and without fee is hereby granted,
- * provided that the above copyright notice appears in all copies and
- * that both the copyright notice and this permission notice appear in
- * supporting documentation.
- *
- * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE.
- *
- * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
- * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
- * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- */
+/*	$OpenBSD: fcnvfx.c,v 1.6 2002/05/07 22:19:30 mickey Exp $	*/
 /*
- * pmk1.1
- */
-/*
- * (c) Copyright 1986 HEWLETT-PACKARD COMPANY
- *
- * To anyone who acknowledges that this file is provided "AS IS"
- * without any express or implied warranty:
- *     permission to use, copy, modify, and distribute this file
- * for any purpose is hereby granted without fee, provided that
- * the above copyright notice and this notice appears in all
- * copies, and that the name of Hewlett-Packard Company not be
- * used in advertising or publicity pertaining to distribution
- * of the software without specific, written prior permission.
- * Hewlett-Packard Company makes no representations about the
- * suitability of this software for any purpose.
- */
+  (c) Copyright 1986 HEWLETT-PACKARD COMPANY
+  To anyone who acknowledges that this file is provided "AS IS"
+  without any express or implied warranty:
+      permission to use, copy, modify, and distribute this file
+  for any purpose is hereby granted without fee, provided that
+  the above copyright notice and this notice appears in all
+  copies, and that the name of Hewlett-Packard Company not be
+  used in advertising or publicity pertaining to distribution
+  of the software without specific, written prior permission.
+  Hewlett-Packard Company makes no representations about the
+  suitability of this software for any purpose.
+*/
+/* @(#)fcnvfx.c: Revision: 2.8.88.2 Date: 93/12/08 13:27:29 */
 
-#include "../spmath/float.h"
-#include "../spmath/sgl_float.h"
-#include "../spmath/dbl_float.h"
-#include "../spmath/cnv_float.h"
+#include "float.h"
+#include "sgl_float.h"
+#include "dbl_float.h"
+#include "cnv_float.h"
 
 /*
  *  Single Floating-point to Single Fixed-point
@@ -50,10 +25,9 @@
 /*ARGSUSED*/
 int
 sgl_to_sgl_fcnvfx(srcptr,dstptr,status)
-
-sgl_floating_point *srcptr;
-int *dstptr;
-unsigned int *status;
+	sgl_floating_point *srcptr;
+	int *dstptr;
+	unsigned int *status;
 {
 	register unsigned int src, temp;
 	register int src_exponent, result;
@@ -69,12 +43,28 @@ unsigned int *status;
 		/* check for MININT */
 		if ((src_exponent > SGL_FX_MAX_EXP + 1) ||
 		Sgl_isnotzero_mantissa(src) || Sgl_iszero_sign(src)) {
-			/*
-			 * Since source is a number which cannot be
-			 * represented in fixed-point format, return
-			 * largest (or smallest) fixed-point number.
-			 */
-			Sgl_return_overflow(src,dstptr);
+			if( Sgl_isnan(src) )
+			  /*
+			   * On NaN go unimplemented.
+			   */
+			  return(UNIMPLEMENTEDEXCEPTION);
+			else {
+			  if (Sgl_iszero_sign(src)) result = 0x7fffffff;
+			  else result = 0x80000000;
+
+			  if (Is_overflowtrap_enabled()) {
+			    if (Is_inexacttrap_enabled())
+			      return(OVERFLOWEXCEPTION|INEXACTEXCEPTION);
+			    else Set_inexactflag();
+			    return(OVERFLOWEXCEPTION);
+			  }
+			  Set_overflowflag();
+			  *dstptr = result;
+			  if (Is_inexacttrap_enabled() )
+				return(INEXACTEXCEPTION);
+			  else Set_inexactflag();
+			  return(NOEXCEPTION);
+			}
 		}
 	}
 	/*
@@ -146,10 +136,9 @@ unsigned int *status;
 /*ARGSUSED*/
 int
 sgl_to_dbl_fcnvfx(srcptr,dstptr,status)
-
-sgl_floating_point *srcptr;
-dbl_integer *dstptr;
-unsigned int *status;
+	sgl_floating_point *srcptr;
+	dbl_integer *dstptr;
+	unsigned int *status;
 {
 	register int src_exponent, resultp1;
 	register unsigned int src, temp, resultp2;
@@ -165,12 +154,33 @@ unsigned int *status;
 		/* check for MININT */
 		if ((src_exponent > DBL_FX_MAX_EXP + 1) ||
 		Sgl_isnotzero_mantissa(src) || Sgl_iszero_sign(src)) {
-			/*
-			 * Since source is a number which cannot be
-			 * represented in fixed-point format, return
-			 * largest (or smallest) fixed-point number.
-			 */
-			Sgl_return_overflow_dbl(src,dstptr);
+			if( Sgl_isnan(src) )
+			  /*
+			   * On NaN go unimplemented.
+			   */
+			  return(UNIMPLEMENTEDEXCEPTION);
+			else {
+			  if (Sgl_iszero_sign(src)) {
+				resultp1 = 0x7fffffff;
+			      resultp2 = 0xffffffff;
+			  }
+			  else {
+			    resultp1 = 0x80000000;
+			    resultp2 = 0;
+			  }
+			  if (Is_overflowtrap_enabled()) {
+			    if (Is_inexacttrap_enabled())
+			      return(OVERFLOWEXCEPTION|INEXACTEXCEPTION);
+			    else Set_inexactflag();
+			    return(OVERFLOWEXCEPTION);
+			  }
+			  Set_overflowflag();
+			  Dint_copytoptr(resultp1,resultp2,dstptr);
+			  if (Is_inexacttrap_enabled() )
+				return(INEXACTEXCEPTION);
+			  else Set_inexactflag();
+			  return(NOEXCEPTION);
+			}
 		}
 		Dint_set_minint(resultp1,resultp2);
 		Dint_copytoptr(resultp1,resultp2,dstptr);
@@ -261,10 +271,9 @@ unsigned int *status;
 /*ARGSUSED*/
 int
 dbl_to_sgl_fcnvfx(srcptr,dstptr,status)
-
-dbl_floating_point *srcptr;
-int *dstptr;
-unsigned int *status;
+	dbl_floating_point *srcptr;
+	int *dstptr;
+	unsigned int *status;
 {
 	register unsigned int srcp1,srcp2, tempp1,tempp2;
 	register int src_exponent, result;
@@ -279,12 +288,28 @@ unsigned int *status;
 	if (src_exponent > SGL_FX_MAX_EXP) {
 		/* check for MININT */
 		if (Dbl_isoverflow_to_int(src_exponent,srcp1,srcp2)) {
-			/*
-			 * Since source is a number which cannot be
-			 * represented in fixed-point format, return
-			 * largest (or smallest) fixed-point number.
-			 */
-			Dbl_return_overflow(srcp1,srcp2,dstptr);
+			if( Dbl_isnan(srcp1,srcp2) )
+			  /*
+			   * On NaN go unimplemented.
+			   */
+			  return(UNIMPLEMENTEDEXCEPTION);
+			else {
+			  if (Dbl_iszero_sign(srcp1)) result = 0x7fffffff;
+			  else result = 0x80000000;
+
+			  if (Is_overflowtrap_enabled()) {
+			    if (Is_inexacttrap_enabled())
+			      return(OVERFLOWEXCEPTION|INEXACTEXCEPTION);
+			    else Set_inexactflag();
+			    return(OVERFLOWEXCEPTION);
+			    }
+			  Set_overflowflag();
+			  *dstptr = result;
+			  if (Is_inexacttrap_enabled() )
+				return(INEXACTEXCEPTION);
+			  else Set_inexactflag();
+			  return(NOEXCEPTION);
+			}
 		}
 	}
 	/*
@@ -305,23 +330,41 @@ unsigned int *status;
 			/*  round result  */
 			switch (Rounding_mode()) {
 			case ROUNDPLUS:
-			     if (Dbl_iszero_sign(srcp1)) result++;
-			     break;
+				if (Dbl_iszero_sign(srcp1))
+					result++;
+				break;
 			case ROUNDMINUS:
-			     if (Dbl_isone_sign(srcp1)) result--;
-			     break;
+				if (Dbl_isone_sign(srcp1)) result--;
+				break;
 			case ROUNDNEAREST:
-			     if (Dbl_isone_roundbit(srcp1,srcp2,src_exponent))
+				if (Dbl_isone_roundbit(srcp1,srcp2,src_exponent))
 				if (Dbl_isone_stickybit(srcp1,srcp2,src_exponent) ||
 				(Dbl_isone_lowmantissap1(tempp1))) {
-				   if (Dbl_iszero_sign(srcp1)) result++;
-				   else result--;
+					if (Dbl_iszero_sign(srcp1)) result++;
+					else result--;
 				}
 			}
 			/* check for overflow */
 			if ((Dbl_iszero_sign(srcp1) && result < 0) ||
 			    (Dbl_isone_sign(srcp1) && result > 0)) {
-				Dbl_return_overflow(srcp1,srcp2,dstptr);
+
+				if (Dbl_iszero_sign(srcp1))
+					result = 0x7fffffff;
+				else
+					result = 0x80000000;
+
+			    if (Is_overflowtrap_enabled()) {
+			    if (Is_inexacttrap_enabled())
+			      return(OVERFLOWEXCEPTION|INEXACTEXCEPTION);
+			    else Set_inexactflag();
+			    return(OVERFLOWEXCEPTION);
+			    }
+			  Set_overflowflag();
+			  *dstptr = result;
+			  if (Is_inexacttrap_enabled() )
+				return(INEXACTEXCEPTION);
+			  else Set_inexactflag();
+			  return(NOEXCEPTION);
 			}
 		}
 	}
@@ -334,16 +377,16 @@ unsigned int *status;
 			/*  round result  */
 			switch (Rounding_mode()) {
 			case ROUNDPLUS:
-			     if (Dbl_iszero_sign(srcp1)) result++;
-			     break;
+				if (Dbl_iszero_sign(srcp1)) result++;
+					break;
 			case ROUNDMINUS:
-			     if (Dbl_isone_sign(srcp1)) result--;
-			     break;
+				if (Dbl_isone_sign(srcp1)) result--;
+				break;
 			case ROUNDNEAREST:
-			     if (src_exponent == -1)
+				if (src_exponent == -1)
 				if (Dbl_isnotzero_mantissa(srcp1,srcp2)) {
-				   if (Dbl_iszero_sign(srcp1)) result++;
-				   else result--;
+					if (Dbl_iszero_sign(srcp1)) result++;
+					else result--;
 				}
 			}
 		}
@@ -362,10 +405,9 @@ unsigned int *status;
 /*ARGSUSED*/
 int
 dbl_to_dbl_fcnvfx(srcptr,dstptr,status)
-
-dbl_floating_point *srcptr;
-dbl_integer *dstptr;
-unsigned int *status;
+	dbl_floating_point *srcptr;
+	dbl_integer *dstptr;
+	unsigned int *status;
 {
 	register int src_exponent, resultp1;
 	register unsigned int srcp1, srcp2, tempp1, tempp2, resultp2;
@@ -381,12 +423,33 @@ unsigned int *status;
 		/* check for MININT */
 		if ((src_exponent > DBL_FX_MAX_EXP + 1) ||
 		Dbl_isnotzero_mantissa(srcp1,srcp2) || Dbl_iszero_sign(srcp1)) {
-			/*
-			 * Since source is a number which cannot be
-			 * represented in fixed-point format, return
-			 * largest (or smallest) fixed-point number.
-			 */
-			Dbl_return_overflow_dbl(srcp1,srcp2,dstptr);
+			if( Dbl_isnan(srcp1,srcp2) )
+			  /*
+			   * On NaN go unimplemented.
+			   */
+			  return(UNIMPLEMENTEDEXCEPTION);
+			else {
+			  if (Dbl_iszero_sign(srcp1)) {
+			     resultp1 = 0x7fffffff;
+			      resultp2 = 0xffffffff;
+			  }
+			  else {
+			    resultp1 = 0x80000000;
+			    resultp2 = 0;
+			  }
+			  if (Is_overflowtrap_enabled()) {
+			    if (Is_inexacttrap_enabled())
+			      return(OVERFLOWEXCEPTION|INEXACTEXCEPTION);
+			    else Set_inexactflag();
+			    return(OVERFLOWEXCEPTION);
+			  }
+			  Set_overflowflag();
+			  Dint_copytoptr(resultp1,resultp2,dstptr);
+			  if (Is_inexacttrap_enabled() )
+				return(INEXACTEXCEPTION);
+			  else Set_inexactflag();
+			  return(NOEXCEPTION);
+			}
 		}
 	}