import the original hp sources for the spmath library w/

the a bsd-like hp licensing on 'em.
w/ many thanks to:
Mike Hibler <mike@fast.cs.utah.edu>
James Loveluck <loveluck@ri.silicomp.fr>
Patrick Roudaud <patrick@enserg.fr>

1 files changed, 266 insertions, 0 deletions

diff --git a/sys/arch/hppa/spmath/frnd.c b/sys/arch/hppa/spmath/frnd.c
new file mode 100644
index 00000000000..4f331d00d0c
--- /dev/null
+++ b/sys/arch/hppa/spmath/frnd.c
@@ -0,0 +1,266 @@
+/*
+ * 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. 
+ * 
+ */
+/*
+ * 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.
+ */
+/* $Source: /cvs/OpenBSD/src/sys/arch/hppa/spmath/frnd.c,v $
+ * $Revision: 1.1 $	$Author: mickey $
+ * $State: Exp $   	$Locker:  $
+ * $Date: 1998/06/23 20:34:01 $
+ */
+
+#include "../spmath/float.h"
+#include "../spmath/sgl_float.h"
+#include "../spmath/dbl_float.h"
+#include "../spmath/quad_float.h"
+#include "../spmath/cnv_float.h"
+
+/*
+ *  Single Floating-point Round to Integer
+ */
+
+/*ARGSUSED*/
+sgl_frnd(srcptr,nullptr,dstptr,status)
+
+sgl_floating_point *srcptr, *dstptr;
+unsigned int *nullptr, *status;
+{
+	register unsigned int src, result;
+	register int src_exponent;
+	register boolean inexact = FALSE;
+
+	src = *srcptr;
+        /*
+         * check source operand for NaN or infinity
+         */
+        if ((src_exponent = Sgl_exponent(src)) == SGL_INFINITY_EXPONENT) {
+                /*
+                 * is signaling NaN?
+                 */
+                if (Sgl_isone_signaling(src)) {
+                        /* trap if INVALIDTRAP enabled */
+                        if (Is_invalidtrap_enabled()) return(INVALIDEXCEPTION);
+                        /* make NaN quiet */
+                        Set_invalidflag();
+                        Sgl_set_quiet(src);
+                }
+                /*
+                 * return quiet NaN or infinity
+                 */
+                *dstptr = src;
+                return(NOEXCEPTION);
+        }
+	/* 
+	 * Need to round?
+	 */
+	if ((src_exponent -= SGL_BIAS) >= SGL_P - 1) {
+		*dstptr = src;
+		return(NOEXCEPTION);
+	}
+	/*
+	 * Generate result
+	 */
+	if (src_exponent >= 0) {
+		Sgl_clear_exponent_set_hidden(src);
+		result = src;
+		Sgl_rightshift(result,(SGL_P-1) - (src_exponent));
+		/* check for inexact */
+		if (Sgl_isinexact_to_fix(src,src_exponent)) {
+			inexact = TRUE;
+			/*  round result  */
+			switch (Rounding_mode()) {
+			case ROUNDPLUS:
+			     if (Sgl_iszero_sign(src)) Sgl_increment(result);
+			     break;
+			case ROUNDMINUS:
+			     if (Sgl_isone_sign(src)) Sgl_increment(result);
+			     break;
+			case ROUNDNEAREST:
+			     if (Sgl_isone_roundbit(src,src_exponent))
+			        if (Sgl_isone_stickybit(src,src_exponent) 
+				|| (Sgl_isone_lowmantissa(result))) 
+					Sgl_increment(result);
+			} 
+		}
+		Sgl_leftshift(result,(SGL_P-1) - (src_exponent));
+		if (Sgl_isone_hiddenoverflow(result)) 
+			Sgl_set_exponent(result,src_exponent + (SGL_BIAS+1));
+		else Sgl_set_exponent(result,src_exponent + SGL_BIAS);
+	}
+	else {
+		result = src;  		/* set sign */
+		Sgl_setzero_exponentmantissa(result);
+		/* check for inexact */
+		if (Sgl_isnotzero_exponentmantissa(src)) {
+			inexact = TRUE;
+			/*  round result  */
+			switch (Rounding_mode()) {
+			case ROUNDPLUS:
+			     if (Sgl_iszero_sign(src)) 
+				Sgl_set_exponent(result,SGL_BIAS);
+			     break;
+			case ROUNDMINUS:
+			     if (Sgl_isone_sign(src)) 
+				Sgl_set_exponent(result,SGL_BIAS);
+			     break;
+			case ROUNDNEAREST:
+			     if (src_exponent == -1)
+			        if (Sgl_isnotzero_mantissa(src))
+				   Sgl_set_exponent(result,SGL_BIAS);
+			} 
+		}
+	}
+	*dstptr = result;
+	if (inexact) 
+		if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
+		else Set_inexactflag();
+	return(NOEXCEPTION);
+} 
+
+/*
+ *  Double Floating-point Round to Integer
+ */
+
+/*ARGSUSED*/
+dbl_frnd(srcptr,nullptr,dstptr,status)
+
+dbl_floating_point *srcptr, *dstptr;
+unsigned int *nullptr, *status;
+{
+	register unsigned int srcp1, srcp2, resultp1, resultp2;
+	register int src_exponent;
+	register boolean inexact = FALSE;
+
+	Dbl_copyfromptr(srcptr,srcp1,srcp2);
+        /*
+         * check source operand for NaN or infinity
+         */
+        if ((src_exponent = Dbl_exponent(srcp1)) == DBL_INFINITY_EXPONENT) {
+                /*
+                 * is signaling NaN?
+                 */
+                if (Dbl_isone_signaling(srcp1)) {
+                        /* trap if INVALIDTRAP enabled */
+                        if (Is_invalidtrap_enabled()) return(INVALIDEXCEPTION);
+                        /* make NaN quiet */
+                        Set_invalidflag();
+                        Dbl_set_quiet(srcp1);
+                }
+                /*
+                 * return quiet NaN or infinity
+                 */
+                Dbl_copytoptr(srcp1,srcp2,dstptr);
+                return(NOEXCEPTION);
+        }
+	/* 
+	 * Need to round?
+	 */
+	if ((src_exponent -= DBL_BIAS) >= DBL_P - 1) {
+		Dbl_copytoptr(srcp1,srcp2,dstptr);
+		return(NOEXCEPTION);
+	}
+	/*
+	 * Generate result
+	 */
+	if (src_exponent >= 0) {
+		Dbl_clear_exponent_set_hidden(srcp1);
+		resultp1 = srcp1;
+		resultp2 = srcp2;
+		Dbl_rightshift(resultp1,resultp2,(DBL_P-1) - (src_exponent));
+		/* check for inexact */
+		if (Dbl_isinexact_to_fix(srcp1,srcp2,src_exponent)) {
+			inexact = TRUE;
+			/*  round result  */
+			switch (Rounding_mode()) {
+			case ROUNDPLUS:
+			     if (Dbl_iszero_sign(srcp1)) 
+				Dbl_increment(resultp1,resultp2);
+			     break;
+			case ROUNDMINUS:
+			     if (Dbl_isone_sign(srcp1)) 
+				Dbl_increment(resultp1,resultp2);
+			     break;
+			case ROUNDNEAREST:
+			     if (Dbl_isone_roundbit(srcp1,srcp2,src_exponent))
+			      if (Dbl_isone_stickybit(srcp1,srcp2,src_exponent) 
+				  || (Dbl_isone_lowmantissap2(resultp2))) 
+					Dbl_increment(resultp1,resultp2);
+			} 
+		}
+		Dbl_leftshift(resultp1,resultp2,(DBL_P-1) - (src_exponent));
+		if (Dbl_isone_hiddenoverflow(resultp1))
+			Dbl_set_exponent(resultp1,src_exponent + (DBL_BIAS+1));
+		else Dbl_set_exponent(resultp1,src_exponent + DBL_BIAS);
+	}
+	else {
+		resultp1 = srcp1;  /* set sign */
+		Dbl_setzero_exponentmantissa(resultp1,resultp2);
+		/* check for inexact */
+		if (Dbl_isnotzero_exponentmantissa(srcp1,srcp2)) {
+			inexact = TRUE;
+			/*  round result  */
+			switch (Rounding_mode()) {
+			case ROUNDPLUS:
+			     if (Dbl_iszero_sign(srcp1)) 
+				Dbl_set_exponent(resultp1,DBL_BIAS);
+			     break;
+			case ROUNDMINUS:
+			     if (Dbl_isone_sign(srcp1)) 
+				Dbl_set_exponent(resultp1,DBL_BIAS);
+			     break;
+			case ROUNDNEAREST:
+			     if (src_exponent == -1)
+			        if (Dbl_isnotzero_mantissa(srcp1,srcp2))
+				   Dbl_set_exponent(resultp1,DBL_BIAS);
+			} 
+		}
+	}
+	Dbl_copytoptr(resultp1,resultp2,dstptr);
+	if (inexact)
+		if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
+		else Set_inexactflag();
+	return(NOEXCEPTION);
+}
+
+/*ARGSUSED*/
+quad_frnd(srcptr,nullptr,dstptr,status)
+
+quad_floating_point *srcptr, *dstptr;
+unsigned int *nullptr, *status;
+{
+	return(UNIMPLEMENTEDEXCEPTION);
+}
+