Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 318 insertions, 0 deletions

diff --git a/arch/parisc/math-emu/fcnvuf.c b/arch/parisc/math-emu/fcnvuf.c
new file mode 100644
index 000000000000..5e68189fee22
--- /dev/null
+++ b/arch/parisc/math-emu/fcnvuf.c
@@ -0,0 +1,318 @@
+/*
+ * Linux/PA-RISC Project (http://www.parisc-linux.org/)
+ *
+ * Floating-point emulation code
+ *  Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2, or (at your option)
+ *    any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+/*
+ * BEGIN_DESC
+ *
+ *  File:
+ *      @(#)    pa/spmath/fcnvuf.c              $Revision: 1.1 $
+ *
+ *  Purpose:
+ *      Fixed point to Floating-point Converts
+ *
+ *  External Interfaces:
+ *      dbl_to_dbl_fcnvuf(srcptr,nullptr,dstptr,status)
+ *      dbl_to_sgl_fcnvuf(srcptr,nullptr,dstptr,status)
+ *      sgl_to_dbl_fcnvuf(srcptr,nullptr,dstptr,status)
+ *      sgl_to_sgl_fcnvuf(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"
+
+/************************************************************************
+ *  Fixed point to Floating-point Converts                              *
+ ************************************************************************/
+
+/*
+ *  Convert Single Unsigned Fixed to Single Floating-point format
+ */
+
+int
+sgl_to_sgl_fcnvuf(
+                        unsigned int *srcptr,
+                        unsigned int *nullptr,
+                        sgl_floating_point *dstptr,
+                        unsigned int *status)
+{
+        register unsigned int src, result = 0;
+        register int dst_exponent;
+
+        src = *srcptr;
+
+        /* Check for zero */ 
+        if (src == 0) { 
+                Sgl_setzero(result); 
+                *dstptr = result;
+                return(NOEXCEPTION); 
+        } 
+        /*
+         * Generate exponent and normalized mantissa
+         */
+        dst_exponent = 16;    /* initialize for normalization */
+        /*
+         * Check word for most significant bit set.  Returns
+         * a value in dst_exponent indicating the bit position,
+         * between -1 and 30.
+         */
+        Find_ms_one_bit(src,dst_exponent);
+        /*  left justify source, with msb at bit position 0  */
+        src <<= dst_exponent+1;
+        Sgl_set_mantissa(result, src >> SGL_EXP_LENGTH);
+        Sgl_set_exponent(result, 30+SGL_BIAS - dst_exponent);
+
+        /* check for inexact */
+        if (Suint_isinexact_to_sgl(src)) {
+                switch (Rounding_mode()) {
+                        case ROUNDPLUS: 
+                                Sgl_increment(result);
+                                break;
+                        case ROUNDMINUS: /* never negative */
+                                break;
+                        case ROUNDNEAREST:
+                                Sgl_roundnearest_from_suint(src,result);
+                                break;
+                }
+                if (Is_inexacttrap_enabled()) {
+                        *dstptr = result;
+                        return(INEXACTEXCEPTION);
+                }
+                else Set_inexactflag();
+        }
+        *dstptr = result;
+        return(NOEXCEPTION);
+}
+
+/*
+ *  Single Unsigned Fixed to Double Floating-point 
+ */
+
+int
+sgl_to_dbl_fcnvuf(
+                        unsigned int *srcptr,
+                        unsigned int *nullptr,
+                        dbl_floating_point *dstptr,
+                        unsigned int *status)
+{
+        register int dst_exponent;
+        register unsigned int src, resultp1 = 0, resultp2 = 0;
+
+        src = *srcptr;
+
+        /* Check for zero */
+        if (src == 0) {
+                Dbl_setzero(resultp1,resultp2);
+                Dbl_copytoptr(resultp1,resultp2,dstptr);
+                return(NOEXCEPTION);
+        }
+        /*
+         * Generate exponent and normalized mantissa
+         */
+        dst_exponent = 16;    /* initialize for normalization */
+        /*
+         * Check word for most significant bit set.  Returns
+         * a value in dst_exponent indicating the bit position,
+         * between -1 and 30.
+         */
+        Find_ms_one_bit(src,dst_exponent);
+        /*  left justify source, with msb at bit position 0  */
+        src <<= dst_exponent+1;
+        Dbl_set_mantissap1(resultp1, src >> DBL_EXP_LENGTH);
+        Dbl_set_mantissap2(resultp2, src << (32-DBL_EXP_LENGTH));
+        Dbl_set_exponent(resultp1, (30+DBL_BIAS) - dst_exponent);
+        Dbl_copytoptr(resultp1,resultp2,dstptr);
+        return(NOEXCEPTION);
+}
+
+/*
+ *  Double Unsigned Fixed to Single Floating-point 
+ */
+
+int
+dbl_to_sgl_fcnvuf(
+                        dbl_unsigned *srcptr,
+                        unsigned int *nullptr,
+                        sgl_floating_point *dstptr,
+                        unsigned int *status)
+{
+        int dst_exponent;
+        unsigned int srcp1, srcp2, result = 0;
+
+        Duint_copyfromptr(srcptr,srcp1,srcp2);
+
+        /* Check for zero */
+        if (srcp1 == 0 && srcp2 == 0) {
+                Sgl_setzero(result);
+                *dstptr = result;
+                return(NOEXCEPTION);
+        }
+        /*
+         * Generate exponent and normalized mantissa
+         */
+        dst_exponent = 16;    /* initialize for normalization */
+        if (srcp1 == 0) {
+                /*
+                 * Check word for most significant bit set.  Returns
+                 * a value in dst_exponent indicating the bit position,
+                 * between -1 and 30.
+                 */
+                Find_ms_one_bit(srcp2,dst_exponent);
+                /*  left justify source, with msb at bit position 0  */
+                srcp1 = srcp2 << dst_exponent+1;    
+                srcp2 = 0;
+                /*
+                 *  since msb set is in second word, need to 
+                 *  adjust bit position count
+                 */
+                dst_exponent += 32;
+        }
+        else {
+                /*
+                 * Check word for most significant bit set.  Returns
+                 * a value in dst_exponent indicating the bit position,
+                 * between -1 and 30.
+                 *
+                 */
+                Find_ms_one_bit(srcp1,dst_exponent);
+                /*  left justify source, with msb at bit position 0  */
+                if (dst_exponent >= 0) {
+                        Variable_shift_double(srcp1,srcp2,(31-dst_exponent),
+                         srcp1); 
+                        srcp2 <<= dst_exponent+1;
+                }
+        }
+        Sgl_set_mantissa(result, srcp1 >> SGL_EXP_LENGTH);
+        Sgl_set_exponent(result, (62+SGL_BIAS) - dst_exponent);
+
+        /* check for inexact */
+        if (Duint_isinexact_to_sgl(srcp1,srcp2)) {
+                switch (Rounding_mode()) {
+                        case ROUNDPLUS: 
+                                Sgl_increment(result);
+                                break;
+                        case ROUNDMINUS: /* never negative */
+                                break;
+                        case ROUNDNEAREST:
+                                Sgl_roundnearest_from_duint(srcp1,srcp2,result);
+                                break;
+                }
+                if (Is_inexacttrap_enabled()) {
+                        *dstptr = result;
+                        return(INEXACTEXCEPTION);
+                }
+                else Set_inexactflag();
+        }
+        *dstptr = result;
+        return(NOEXCEPTION);
+}
+
+/*
+ *  Double Unsigned Fixed to Double Floating-point 
+ */
+
+int
+dbl_to_dbl_fcnvuf(
+                    dbl_unsigned *srcptr,
+                    unsigned int *nullptr,
+                    dbl_floating_point *dstptr,
+                    unsigned int *status)
+{
+        register int dst_exponent;
+        register unsigned int srcp1, srcp2, resultp1 = 0, resultp2 = 0;
+
+        Duint_copyfromptr(srcptr,srcp1,srcp2);
+
+        /* Check for zero */
+        if (srcp1 == 0 && srcp2 ==0) {
+                Dbl_setzero(resultp1,resultp2);
+                Dbl_copytoptr(resultp1,resultp2,dstptr);
+                return(NOEXCEPTION);
+        }
+        /*
+         * Generate exponent and normalized mantissa
+         */
+        dst_exponent = 16;    /* initialize for normalization */
+        if (srcp1 == 0) {
+                /*
+                 * Check word for most significant bit set.  Returns
+                 * a value in dst_exponent indicating the bit position,
+                 * between -1 and 30.
+                 */
+                Find_ms_one_bit(srcp2,dst_exponent);
+                /*  left justify source, with msb at bit position 0  */
+                srcp1 = srcp2 << dst_exponent+1;
+                srcp2 = 0;
+                /*
+                 *  since msb set is in second word, need to 
+                 *  adjust bit position count
+                 */
+                dst_exponent += 32;
+        }
+        else {
+                /*
+                 * Check word for most significant bit set.  Returns
+                 * a value in dst_exponent indicating the bit position,
+                 * between -1 and 30.
+                 */
+                Find_ms_one_bit(srcp1,dst_exponent);
+                /*  left justify source, with msb at bit position 0  */
+                if (dst_exponent >= 0) {
+                        Variable_shift_double(srcp1,srcp2,(31-dst_exponent),
+                         srcp1); 
+                        srcp2 <<= dst_exponent+1;
+                }
+        }
+        Dbl_set_mantissap1(resultp1, srcp1 >> DBL_EXP_LENGTH);
+        Shiftdouble(srcp1,srcp2,DBL_EXP_LENGTH,resultp2);
+        Dbl_set_exponent(resultp1, (62+DBL_BIAS) - dst_exponent);
+
+        /* check for inexact */
+        if (Duint_isinexact_to_dbl(srcp2)) {
+                switch (Rounding_mode()) {
+                        case ROUNDPLUS: 
+                                Dbl_increment(resultp1,resultp2);
+                                break;
+                        case ROUNDMINUS: /* never negative */
+                                break;
+                        case ROUNDNEAREST:
+                                Dbl_roundnearest_from_duint(srcp2,resultp1,
+                                resultp2);
+                                break;
+                }
+                if (Is_inexacttrap_enabled()) {
+                        Dbl_copytoptr(resultp1,resultp2,dstptr);
+                        return(INEXACTEXCEPTION);
+                }
+                else Set_inexactflag();
+        }
+        Dbl_copytoptr(resultp1,resultp2,dstptr);
+        return(NOEXCEPTION);
+}
+