Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 315 insertions, 0 deletions

diff --git a/arch/parisc/math-emu/fcnvfxt.c b/arch/parisc/math-emu/fcnvfxt.c
new file mode 100644
index 000000000..ebec31e40
--- /dev/null
+++ b/arch/parisc/math-emu/fcnvfxt.c
@@ -0,0 +1,315 @@
+// 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/spmath/fcnvfxt.c		$Revision: 1.1 $
+ *
+ *  Purpose:
+ *	Single Floating-point to Single Fixed-point /w truncated result
+ *	Single Floating-point to Double Fixed-point /w truncated result
+ *	Double Floating-point to Single Fixed-point /w truncated result
+ *	Double Floating-point to Double Fixed-point /w truncated result
+ *
+ *  External Interfaces:
+ *	dbl_to_dbl_fcnvfxt(srcptr,nullptr,dstptr,status)
+ *	dbl_to_sgl_fcnvfxt(srcptr,nullptr,dstptr,status)
+ *	sgl_to_dbl_fcnvfxt(srcptr,nullptr,dstptr,status)
+ *	sgl_to_sgl_fcnvfxt(srcptr,nullptr,dstptr,status)
+ *
+ *  Internal Interfaces:
+ *
+ *  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 "cnv_float.h"
+
+/*
+ *  Convert single floating-point to single fixed-point format
+ *  with truncated result
+ */
+/*ARGSUSED*/
+int
+sgl_to_sgl_fcnvfxt(
+		    sgl_floating_point *srcptr,
+		    unsigned int *nullptr,
+		    int *dstptr,
+		    unsigned int *status)
+{
+	register unsigned int src, temp;
+	register int src_exponent, result;
+
+	src = *srcptr;
+	src_exponent = Sgl_exponent(src) - SGL_BIAS;
+
+	/* 
+	 * Test for overflow
+	 */
+	if (src_exponent > SGL_FX_MAX_EXP) {
+		/* check for MININT */
+		if ((src_exponent > SGL_FX_MAX_EXP + 1) || 
+		Sgl_isnotzero_mantissa(src) || Sgl_iszero_sign(src)) {
+                        if (Sgl_iszero_sign(src)) result = 0x7fffffff;
+                        else result = 0x80000000; 
+
+	                if (Is_invalidtrap_enabled()) {
+                            return(INVALIDEXCEPTION);
+                        }
+                        Set_invalidflag();
+			*dstptr = result;
+			return(NOEXCEPTION);
+		}
+	}
+	/*
+	 * Generate result
+	 */
+	if (src_exponent >= 0) {
+		temp = src;
+		Sgl_clear_signexponent_set_hidden(temp);
+		Int_from_sgl_mantissa(temp,src_exponent);
+		if (Sgl_isone_sign(src))  result = -Sgl_all(temp);
+		else result = Sgl_all(temp);
+		*dstptr = result;
+
+		/* check for inexact */
+		if (Sgl_isinexact_to_fix(src,src_exponent)) {
+			if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
+			else Set_inexactflag();
+		}
+	}
+	else {
+		*dstptr = 0;
+
+		/* check for inexact */
+		if (Sgl_isnotzero_exponentmantissa(src)) {
+			if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
+			else Set_inexactflag();
+		}
+	}
+	return(NOEXCEPTION);
+}
+
+/*
+ *  Single Floating-point to Double Fixed-point 
+ */
+/*ARGSUSED*/
+int
+sgl_to_dbl_fcnvfxt(
+		    sgl_floating_point *srcptr,
+		    unsigned int *nullptr,
+		    dbl_integer *dstptr,
+		    unsigned int *status)
+{
+	register int src_exponent, resultp1;
+	register unsigned int src, temp, resultp2;
+
+	src = *srcptr;
+	src_exponent = Sgl_exponent(src) - SGL_BIAS;
+
+	/* 
+	 * Test for overflow
+	 */
+	if (src_exponent > DBL_FX_MAX_EXP) {
+		/* check for MININT */
+		if ((src_exponent > DBL_FX_MAX_EXP + 1) || 
+		Sgl_isnotzero_mantissa(src) || Sgl_iszero_sign(src)) {
+                        if (Sgl_iszero_sign(src)) {
+                              resultp1 = 0x7fffffff;
+			      resultp2 = 0xffffffff;
+			}
+                        else {
+			    resultp1 = 0x80000000; 
+			    resultp2 = 0;
+			}
+	                if (Is_invalidtrap_enabled()) {
+                            return(INVALIDEXCEPTION);
+                        }
+                        Set_invalidflag();
+    		        Dint_copytoptr(resultp1,resultp2,dstptr);
+			return(NOEXCEPTION);
+		}
+		Dint_set_minint(resultp1,resultp2);
+		Dint_copytoptr(resultp1,resultp2,dstptr);
+		return(NOEXCEPTION);
+	}
+	/*
+	 * Generate result
+	 */
+	if (src_exponent >= 0) {
+		temp = src;
+		Sgl_clear_signexponent_set_hidden(temp);
+		Dint_from_sgl_mantissa(temp,src_exponent,resultp1,resultp2);
+		if (Sgl_isone_sign(src)) {
+			Dint_setone_sign(resultp1,resultp2);
+		}
+		Dint_copytoptr(resultp1,resultp2,dstptr);
+
+		/* check for inexact */
+		if (Sgl_isinexact_to_fix(src,src_exponent)) {
+			if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
+			else Set_inexactflag();
+		}
+	}
+	else {
+		Dint_setzero(resultp1,resultp2);
+		Dint_copytoptr(resultp1,resultp2,dstptr);
+
+		/* check for inexact */
+		if (Sgl_isnotzero_exponentmantissa(src)) {
+			if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
+			else Set_inexactflag();
+		}
+	}
+	return(NOEXCEPTION);
+}
+
+/*
+ *  Double Floating-point to Single Fixed-point 
+ */
+/*ARGSUSED*/
+int
+dbl_to_sgl_fcnvfxt(
+			dbl_floating_point *srcptr,
+			unsigned int *nullptr,
+			int *dstptr,
+			unsigned int *status)
+{
+	register unsigned int srcp1, srcp2, tempp1, tempp2;
+	register int src_exponent, result;
+
+	Dbl_copyfromptr(srcptr,srcp1,srcp2);
+	src_exponent = Dbl_exponent(srcp1) - DBL_BIAS;
+
+	/* 
+	 * Test for overflow
+	 */
+	if (src_exponent > SGL_FX_MAX_EXP) {
+		/* check for MININT */
+		if (Dbl_isoverflow_to_int(src_exponent,srcp1,srcp2)) {
+                        if (Dbl_iszero_sign(srcp1)) result = 0x7fffffff;
+                        else result = 0x80000000; 
+
+	                if (Is_invalidtrap_enabled()) {
+                            return(INVALIDEXCEPTION);
+                        }
+                        Set_invalidflag();
+			*dstptr = result;
+			return(NOEXCEPTION);
+		}
+	}
+	/*
+	 * Generate result
+	 */
+	if (src_exponent >= 0) {
+		tempp1 = srcp1;
+		tempp2 = srcp2;
+		Dbl_clear_signexponent_set_hidden(tempp1);
+		Int_from_dbl_mantissa(tempp1,tempp2,src_exponent);
+		if (Dbl_isone_sign(srcp1) && (src_exponent <= SGL_FX_MAX_EXP))
+			result = -Dbl_allp1(tempp1);
+		else result = Dbl_allp1(tempp1);
+		*dstptr = result;
+
+		/* check for inexact */
+		if (Dbl_isinexact_to_fix(srcp1,srcp2,src_exponent)) {
+			if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
+			else Set_inexactflag();
+		}
+	}
+	else {
+		*dstptr = 0;
+
+		/* check for inexact */
+		if (Dbl_isnotzero_exponentmantissa(srcp1,srcp2)) {
+			if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
+			else Set_inexactflag();
+		}
+	}
+	return(NOEXCEPTION);
+}
+
+/*
+ *  Double Floating-point to Double Fixed-point 
+ */
+/*ARGSUSED*/
+int
+dbl_to_dbl_fcnvfxt(
+			dbl_floating_point *srcptr,
+			unsigned int *nullptr,
+			dbl_integer *dstptr,
+			unsigned int *status)
+{
+	register int src_exponent, resultp1;
+	register unsigned int srcp1, srcp2, tempp1, tempp2, resultp2;
+
+	Dbl_copyfromptr(srcptr,srcp1,srcp2);
+	src_exponent = Dbl_exponent(srcp1) - DBL_BIAS;
+
+	/* 
+	 * Test for overflow
+	 */
+	if (src_exponent > DBL_FX_MAX_EXP) {
+		/* check for MININT */
+		if ((src_exponent > DBL_FX_MAX_EXP + 1) || 
+		Dbl_isnotzero_mantissa(srcp1,srcp2) || Dbl_iszero_sign(srcp1)) {
+                        if (Dbl_iszero_sign(srcp1)) {
+                              resultp1 = 0x7fffffff;
+			      resultp2 = 0xffffffff;
+			}
+                        else {
+			    resultp1 = 0x80000000; 
+			    resultp2 = 0;
+			}
+	                if (Is_invalidtrap_enabled()) {
+                            return(INVALIDEXCEPTION);
+                        }
+                        Set_invalidflag();
+    		        Dint_copytoptr(resultp1,resultp2,dstptr);
+			return(NOEXCEPTION);
+		}
+	}
+	/*
+	 * Generate result
+	 */
+	if (src_exponent >= 0) {
+		tempp1 = srcp1;
+		tempp2 = srcp2;
+		Dbl_clear_signexponent_set_hidden(tempp1);
+		Dint_from_dbl_mantissa(tempp1,tempp2,src_exponent,
+		resultp1,resultp2);
+		if (Dbl_isone_sign(srcp1)) {
+			Dint_setone_sign(resultp1,resultp2);
+		}
+		Dint_copytoptr(resultp1,resultp2,dstptr);
+
+		/* check for inexact */
+		if (Dbl_isinexact_to_fix(srcp1,srcp2,src_exponent)) {
+			if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
+			else Set_inexactflag();
+		}
+	}
+	else {
+		Dint_setzero(resultp1,resultp2);
+		Dint_copytoptr(resultp1,resultp2,dstptr);
+
+		/* check for inexact */
+		if (Dbl_isnotzero_exponentmantissa(srcp1,srcp2)) {
+			if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
+			else Set_inexactflag();
+		}
+	}
+	return(NOEXCEPTION);
+}