diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/parisc/math-emu/dfcmp.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/parisc/math-emu/dfcmp.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/ANDROID_3.4.5/arch/parisc/math-emu/dfcmp.c b/ANDROID_3.4.5/arch/parisc/math-emu/dfcmp.c deleted file mode 100644 index 59521267..00000000 --- a/ANDROID_3.4.5/arch/parisc/math-emu/dfcmp.c +++ /dev/null @@ -1,181 +0,0 @@ -/* - * 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/dfcmp.c $Revision: 1.1 $ - * - * Purpose: - * dbl_cmp: compare two values - * - * External Interfaces: - * dbl_fcmp(leftptr, rightptr, cond, status) - * - * Internal Interfaces: - * - * Theory: - * <<please update with a overview of the operation of this file>> - * - * END_DESC -*/ - - - -#include "float.h" -#include "dbl_float.h" - -/* - * dbl_cmp: compare two values - */ -int -dbl_fcmp (dbl_floating_point * leftptr, dbl_floating_point * rightptr, - unsigned int cond, unsigned int *status) - - /* The predicate to be tested */ - - { - register unsigned int leftp1, leftp2, rightp1, rightp2; - register int xorresult; - - /* Create local copies of the numbers */ - Dbl_copyfromptr(leftptr,leftp1,leftp2); - Dbl_copyfromptr(rightptr,rightp1,rightp2); - /* - * Test for NaN - */ - if( (Dbl_exponent(leftp1) == DBL_INFINITY_EXPONENT) - || (Dbl_exponent(rightp1) == DBL_INFINITY_EXPONENT) ) - { - /* Check if a NaN is involved. Signal an invalid exception when - * comparing a signaling NaN or when comparing quiet NaNs and the - * low bit of the condition is set */ - if( ((Dbl_exponent(leftp1) == DBL_INFINITY_EXPONENT) - && Dbl_isnotzero_mantissa(leftp1,leftp2) - && (Exception(cond) || Dbl_isone_signaling(leftp1))) - || - ((Dbl_exponent(rightp1) == DBL_INFINITY_EXPONENT) - && Dbl_isnotzero_mantissa(rightp1,rightp2) - && (Exception(cond) || Dbl_isone_signaling(rightp1))) ) - { - if( Is_invalidtrap_enabled() ) { - Set_status_cbit(Unordered(cond)); - return(INVALIDEXCEPTION); - } - else Set_invalidflag(); - Set_status_cbit(Unordered(cond)); - return(NOEXCEPTION); - } - /* All the exceptional conditions are handled, now special case - NaN compares */ - else if( ((Dbl_exponent(leftp1) == DBL_INFINITY_EXPONENT) - && Dbl_isnotzero_mantissa(leftp1,leftp2)) - || - ((Dbl_exponent(rightp1) == DBL_INFINITY_EXPONENT) - && Dbl_isnotzero_mantissa(rightp1,rightp2)) ) - { - /* NaNs always compare unordered. */ - Set_status_cbit(Unordered(cond)); - return(NOEXCEPTION); - } - /* infinities will drop down to the normal compare mechanisms */ - } - /* First compare for unequal signs => less or greater or - * special equal case */ - Dbl_xortointp1(leftp1,rightp1,xorresult); - if( xorresult < 0 ) - { - /* left negative => less, left positive => greater. - * equal is possible if both operands are zeros. */ - if( Dbl_iszero_exponentmantissa(leftp1,leftp2) - && Dbl_iszero_exponentmantissa(rightp1,rightp2) ) - { - Set_status_cbit(Equal(cond)); - } - else if( Dbl_isone_sign(leftp1) ) - { - Set_status_cbit(Lessthan(cond)); - } - else - { - Set_status_cbit(Greaterthan(cond)); - } - } - /* Signs are the same. Treat negative numbers separately - * from the positives because of the reversed sense. */ - else if(Dbl_isequal(leftp1,leftp2,rightp1,rightp2)) - { - Set_status_cbit(Equal(cond)); - } - else if( Dbl_iszero_sign(leftp1) ) - { - /* Positive compare */ - if( Dbl_allp1(leftp1) < Dbl_allp1(rightp1) ) - { - Set_status_cbit(Lessthan(cond)); - } - else if( Dbl_allp1(leftp1) > Dbl_allp1(rightp1) ) - { - Set_status_cbit(Greaterthan(cond)); - } - else - { - /* Equal first parts. Now we must use unsigned compares to - * resolve the two possibilities. */ - if( Dbl_allp2(leftp2) < Dbl_allp2(rightp2) ) - { - Set_status_cbit(Lessthan(cond)); - } - else - { - Set_status_cbit(Greaterthan(cond)); - } - } - } - else - { - /* Negative compare. Signed or unsigned compares - * both work the same. That distinction is only - * important when the sign bits differ. */ - if( Dbl_allp1(leftp1) > Dbl_allp1(rightp1) ) - { - Set_status_cbit(Lessthan(cond)); - } - else if( Dbl_allp1(leftp1) < Dbl_allp1(rightp1) ) - { - Set_status_cbit(Greaterthan(cond)); - } - else - { - /* Equal first parts. Now we must use unsigned compares to - * resolve the two possibilities. */ - if( Dbl_allp2(leftp2) > Dbl_allp2(rightp2) ) - { - Set_status_cbit(Lessthan(cond)); - } - else - { - Set_status_cbit(Greaterthan(cond)); - } - } - } - return(NOEXCEPTION); - } |