float.h
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上传日期:2013-04-10
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- /*
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- /*
- * BEGIN_DESC
- *
- * File:
- * @(#) pa/spmath/float.h $Revision: 1.2 $
- *
- * Purpose:
- * <<please update with a synopis of the functionality provided by this file>>
- *
- * BE header: no
- *
- * Shipped: yes
- * /usr/conf/pa/spmath/float.h
- *
- * END_DESC
- */
- #ifdef __NO_PA_HDRS
- PA header file -- do not include this header file for non-PA builds.
- #endif
- #include "fpbits.h"
- #include "hppa.h"
- /*
- * Want to pick up the FPU capability flags, not the PDC structures.
- * 'LOCORE' isn't really true in this case, but we don't want the C structures
- * so it suits our purposes
- */
- #define LOCORE
- #include "fpu.h"
- /*
- * Declare the basic structures for the 3 different
- * floating-point precisions.
- *
- * Single number
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * |s| exp | mantissa |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- */
- #define Sall(object) (object)
- #define Ssign(object) Bitfield_extract( 0, 1,object)
- #define Ssignedsign(object) Bitfield_signed_extract( 0, 1,object)
- #define Sexponent(object) Bitfield_extract( 1, 8,object)
- #define Smantissa(object) Bitfield_mask( 9, 23,object)
- #define Ssignaling(object) Bitfield_extract( 9, 1,object)
- #define Ssignalingnan(object) Bitfield_extract( 1, 9,object)
- #define Shigh2mantissa(object) Bitfield_extract( 9, 2,object)
- #define Sexponentmantissa(object) Bitfield_mask( 1, 31,object)
- #define Ssignexponent(object) Bitfield_extract( 0, 9,object)
- #define Shidden(object) Bitfield_extract( 8, 1,object)
- #define Shiddenoverflow(object) Bitfield_extract( 7, 1,object)
- #define Shiddenhigh7mantissa(object) Bitfield_extract( 8, 8,object)
- #define Shiddenhigh3mantissa(object) Bitfield_extract( 8, 4,object)
- #define Slow(object) Bitfield_mask( 31, 1,object)
- #define Slow4(object) Bitfield_mask( 28, 4,object)
- #define Slow31(object) Bitfield_mask( 1, 31,object)
- #define Shigh31(object) Bitfield_extract( 0, 31,object)
- #define Ssignedhigh31(object) Bitfield_signed_extract( 0, 31,object)
- #define Shigh4(object) Bitfield_extract( 0, 4,object)
- #define Sbit24(object) Bitfield_extract( 24, 1,object)
- #define Sbit28(object) Bitfield_extract( 28, 1,object)
- #define Sbit29(object) Bitfield_extract( 29, 1,object)
- #define Sbit30(object) Bitfield_extract( 30, 1,object)
- #define Sbit31(object) Bitfield_mask( 31, 1,object)
- #define Deposit_ssign(object,value) Bitfield_deposit(value,0,1,object)
- #define Deposit_sexponent(object,value) Bitfield_deposit(value,1,8,object)
- #define Deposit_smantissa(object,value) Bitfield_deposit(value,9,23,object)
- #define Deposit_shigh2mantissa(object,value) Bitfield_deposit(value,9,2,object)
- #define Deposit_sexponentmantissa(object,value)
- Bitfield_deposit(value,1,31,object)
- #define Deposit_ssignexponent(object,value) Bitfield_deposit(value,0,9,object)
- #define Deposit_slow(object,value) Bitfield_deposit(value,31,1,object)
- #define Deposit_shigh4(object,value) Bitfield_deposit(value,0,4,object)
- #define Is_ssign(object) Bitfield_mask( 0, 1,object)
- #define Is_ssignaling(object) Bitfield_mask( 9, 1,object)
- #define Is_shidden(object) Bitfield_mask( 8, 1,object)
- #define Is_shiddenoverflow(object) Bitfield_mask( 7, 1,object)
- #define Is_slow(object) Bitfield_mask( 31, 1,object)
- #define Is_sbit24(object) Bitfield_mask( 24, 1,object)
- #define Is_sbit28(object) Bitfield_mask( 28, 1,object)
- #define Is_sbit29(object) Bitfield_mask( 29, 1,object)
- #define Is_sbit30(object) Bitfield_mask( 30, 1,object)
- #define Is_sbit31(object) Bitfield_mask( 31, 1,object)
- /*
- * Double number.
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * |s| exponent | mantissa part 1 |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- *
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | mantissa part 2 |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- */
- #define Dallp1(object) (object)
- #define Dsign(object) Bitfield_extract( 0, 1,object)
- #define Dsignedsign(object) Bitfield_signed_extract( 0, 1,object)
- #define Dexponent(object) Bitfield_extract( 1, 11,object)
- #define Dmantissap1(object) Bitfield_mask( 12, 20,object)
- #define Dsignaling(object) Bitfield_extract( 12, 1,object)
- #define Dsignalingnan(object) Bitfield_extract( 1, 12,object)
- #define Dhigh2mantissa(object) Bitfield_extract( 12, 2,object)
- #define Dexponentmantissap1(object) Bitfield_mask( 1, 31,object)
- #define Dsignexponent(object) Bitfield_extract( 0, 12,object)
- #define Dhidden(object) Bitfield_extract( 11, 1,object)
- #define Dhiddenoverflow(object) Bitfield_extract( 10, 1,object)
- #define Dhiddenhigh7mantissa(object) Bitfield_extract( 11, 8,object)
- #define Dhiddenhigh3mantissa(object) Bitfield_extract( 11, 4,object)
- #define Dlowp1(object) Bitfield_mask( 31, 1,object)
- #define Dlow31p1(object) Bitfield_mask( 1, 31,object)
- #define Dhighp1(object) Bitfield_extract( 0, 1,object)
- #define Dhigh4p1(object) Bitfield_extract( 0, 4,object)
- #define Dhigh31p1(object) Bitfield_extract( 0, 31,object)
- #define Dsignedhigh31p1(object) Bitfield_signed_extract( 0, 31,object)
- #define Dbit3p1(object) Bitfield_extract( 3, 1,object)
- #define Deposit_dsign(object,value) Bitfield_deposit(value,0,1,object)
- #define Deposit_dexponent(object,value) Bitfield_deposit(value,1,11,object)
- #define Deposit_dmantissap1(object,value) Bitfield_deposit(value,12,20,object)
- #define Deposit_dhigh2mantissa(object,value) Bitfield_deposit(value,12,2,object)
- #define Deposit_dexponentmantissap1(object,value)
- Bitfield_deposit(value,1,31,object)
- #define Deposit_dsignexponent(object,value) Bitfield_deposit(value,0,12,object)
- #define Deposit_dlowp1(object,value) Bitfield_deposit(value,31,1,object)
- #define Deposit_dhigh4p1(object,value) Bitfield_deposit(value,0,4,object)
- #define Is_dsign(object) Bitfield_mask( 0, 1,object)
- #define Is_dsignaling(object) Bitfield_mask( 12, 1,object)
- #define Is_dhidden(object) Bitfield_mask( 11, 1,object)
- #define Is_dhiddenoverflow(object) Bitfield_mask( 10, 1,object)
- #define Is_dlowp1(object) Bitfield_mask( 31, 1,object)
- #define Is_dhighp1(object) Bitfield_mask( 0, 1,object)
- #define Is_dbit3p1(object) Bitfield_mask( 3, 1,object)
- #define Dallp2(object) (object)
- #define Dmantissap2(object) (object)
- #define Dlowp2(object) Bitfield_mask( 31, 1,object)
- #define Dlow4p2(object) Bitfield_mask( 28, 4,object)
- #define Dlow31p2(object) Bitfield_mask( 1, 31,object)
- #define Dhighp2(object) Bitfield_extract( 0, 1,object)
- #define Dhigh31p2(object) Bitfield_extract( 0, 31,object)
- #define Dbit2p2(object) Bitfield_extract( 2, 1,object)
- #define Dbit3p2(object) Bitfield_extract( 3, 1,object)
- #define Dbit21p2(object) Bitfield_extract( 21, 1,object)
- #define Dbit28p2(object) Bitfield_extract( 28, 1,object)
- #define Dbit29p2(object) Bitfield_extract( 29, 1,object)
- #define Dbit30p2(object) Bitfield_extract( 30, 1,object)
- #define Dbit31p2(object) Bitfield_mask( 31, 1,object)
- #define Deposit_dlowp2(object,value) Bitfield_deposit(value,31,1,object)
- #define Is_dlowp2(object) Bitfield_mask( 31, 1,object)
- #define Is_dhighp2(object) Bitfield_mask( 0, 1,object)
- #define Is_dbit2p2(object) Bitfield_mask( 2, 1,object)
- #define Is_dbit3p2(object) Bitfield_mask( 3, 1,object)
- #define Is_dbit21p2(object) Bitfield_mask( 21, 1,object)
- #define Is_dbit28p2(object) Bitfield_mask( 28, 1,object)
- #define Is_dbit29p2(object) Bitfield_mask( 29, 1,object)
- #define Is_dbit30p2(object) Bitfield_mask( 30, 1,object)
- #define Is_dbit31p2(object) Bitfield_mask( 31, 1,object)
- /*
- * Quad number.
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * |s| exponent | mantissa part 1 |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- *
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | mantissa part 2 |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- *
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | mantissa part 3 |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- *
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | mantissa part 4 |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- */
- typedef struct
- {
- union
- {
- struct { unsigned qallp1; } u_qallp1;
- /* Not needed for now...
- Bitfield_extract( 0, 1,u_qsign,qsign)
- Bitfield_signed_extract( 0, 1,u_qsignedsign,qsignedsign)
- Bitfield_extract( 1, 15,u_qexponent,qexponent)
- Bitfield_extract(16, 16,u_qmantissap1,qmantissap1)
- Bitfield_extract(16, 1,u_qsignaling,qsignaling)
- Bitfield_extract(1, 16,u_qsignalingnan,qsignalingnan)
- Bitfield_extract(16, 2,u_qhigh2mantissa,qhigh2mantissa)
- Bitfield_extract( 1, 31,u_qexponentmantissap1,qexponentmantissap1)
- Bitfield_extract( 0, 16,u_qsignexponent,qsignexponent)
- Bitfield_extract(15, 1,u_qhidden,qhidden)
- Bitfield_extract(14, 1,u_qhiddenoverflow,qhiddenoverflow)
- Bitfield_extract(15, 8,u_qhiddenhigh7mantissa,qhiddenhigh7mantissa)
- Bitfield_extract(15, 4,u_qhiddenhigh3mantissa,qhiddenhigh3mantissa)
- Bitfield_extract(31, 1,u_qlowp1,qlowp1)
- Bitfield_extract( 1, 31,u_qlow31p1,qlow31p1)
- Bitfield_extract( 0, 1,u_qhighp1,qhighp1)
- Bitfield_extract( 0, 4,u_qhigh4p1,qhigh4p1)
- Bitfield_extract( 0, 31,u_qhigh31p1,qhigh31p1)
- */
- } quad_u1;
- union
- {
- struct { unsigned qallp2; } u_qallp2;
- /* Not needed for now...
- Bitfield_extract(31, 1,u_qlowp2,qlowp2)
- Bitfield_extract( 1, 31,u_qlow31p2,qlow31p2)
- Bitfield_extract( 0, 1,u_qhighp2,qhighp2)
- Bitfield_extract( 0, 31,u_qhigh31p2,qhigh31p2)
- */
- } quad_u2;
- union
- {
- struct { unsigned qallp3; } u_qallp3;
- /* Not needed for now...
- Bitfield_extract(31, 1,u_qlowp3,qlowp3)
- Bitfield_extract( 1, 31,u_qlow31p3,qlow31p3)
- Bitfield_extract( 0, 1,u_qhighp3,qhighp3)
- Bitfield_extract( 0, 31,u_qhigh31p3,qhigh31p3)
- */
- } quad_u3;
- union
- {
- struct { unsigned qallp4; } u_qallp4;
- /* Not need for now...
- Bitfield_extract(31, 1,u_qlowp4,qlowp4)
- Bitfield_extract( 1, 31,u_qlow31p4,qlow31p4)
- Bitfield_extract( 0, 1,u_qhighp4,qhighp4)
- Bitfield_extract( 0, 31,u_qhigh31p4,qhigh31p4)
- */
- } quad_u4;
- } quad_floating_point;
- /* Extension - An additional structure to hold the guard, round and
- * sticky bits during computations.
- */
- #define Extall(object) (object)
- #define Extsign(object) Bitfield_extract( 0, 1,object)
- #define Exthigh31(object) Bitfield_extract( 0, 31,object)
- #define Extlow31(object) Bitfield_extract( 1, 31,object)
- #define Extlow(object) Bitfield_extract( 31, 1,object)
- /*
- * Single extended - The upper word is just like single precision,
- * but one additional word of mantissa is needed.
- */
- #define Sextallp1(object) (object)
- #define Sextallp2(object) (object)
- #define Sextlowp1(object) Bitfield_extract( 31, 1,object)
- #define Sexthighp2(object) Bitfield_extract( 0, 1,object)
- #define Sextlow31p2(object) Bitfield_extract( 1, 31,object)
- #define Sexthiddenoverflow(object) Bitfield_extract( 4, 1,object)
- #define Is_sexthiddenoverflow(object) Bitfield_mask( 4, 1,object)
- /*
- * Double extended - The upper two words are just like double precision,
- * but two additional words of mantissa are needed.
- */
- #define Dextallp1(object) (object)
- #define Dextallp2(object) (object)
- #define Dextallp3(object) (object)
- #define Dextallp4(object) (object)
- #define Dextlowp2(object) Bitfield_extract( 31, 1,object)
- #define Dexthighp3(object) Bitfield_extract( 0, 1,object)
- #define Dextlow31p3(object) Bitfield_extract( 1, 31,object)
- #define Dexthiddenoverflow(object) Bitfield_extract( 10, 1,object)
- #define Is_dexthiddenoverflow(object) Bitfield_mask( 10, 1,object)
- #define Deposit_dextlowp4(object,value) Bitfield_deposit(value,31,1,object)
- /*
- * Declare the basic structures for the 3 different
- * fixed-point precisions.
- *
- * Single number
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * |s| integer |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- */
- typedef int sgl_integer;
- /*
- * Double number.
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * |s| high integer |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- *
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | low integer |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- */
- struct dint {
- int wd0;
- unsigned int wd1;
- };
- struct dblwd {
- unsigned int wd0;
- unsigned int wd1;
- };
- /*
- * Quad number.
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * |s| integer part1 |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- *
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | integer part 2 |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- *
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | integer part 3 |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- *
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | integer part 4 |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- */
- struct quadwd {
- int wd0;
- unsigned int wd1;
- unsigned int wd2;
- unsigned int wd3;
- };
- typedef struct quadwd quad_integer;
- /* useful typedefs */
- typedef unsigned int sgl_floating_point;
- typedef struct dblwd dbl_floating_point;
- typedef struct dint dbl_integer;
- typedef struct dblwd dbl_unsigned;
- /*
- * Define the different precisions' parameters.
- */
- #define SGL_BITLENGTH 32
- #define SGL_EMAX 127
- #define SGL_EMIN (-126)
- #define SGL_BIAS 127
- #define SGL_WRAP 192
- #define SGL_INFINITY_EXPONENT (SGL_EMAX+SGL_BIAS+1)
- #define SGL_THRESHOLD 32
- #define SGL_EXP_LENGTH 8
- #define SGL_P 24
- #define DBL_BITLENGTH 64
- #define DBL_EMAX 1023
- #define DBL_EMIN (-1022)
- #define DBL_BIAS 1023
- #define DBL_WRAP 1536
- #define DBL_INFINITY_EXPONENT (DBL_EMAX+DBL_BIAS+1)
- #define DBL_THRESHOLD 64
- #define DBL_EXP_LENGTH 11
- #define DBL_P 53
- #define QUAD_BITLENGTH 128
- #define QUAD_EMAX 16383
- #define QUAD_EMIN (-16382)
- #define QUAD_BIAS 16383
- #define QUAD_WRAP 24576
- #define QUAD_INFINITY_EXPONENT (QUAD_EMAX+QUAD_BIAS+1)
- #define QUAD_P 113
- /* Boolean Values etc. */
- #define FALSE 0
- #define TRUE (!FALSE)
- #define NOT !
- #define XOR ^
- /* other constants */
- #undef NULL
- #define NULL 0
- #define NIL 0
- #define SGL 0
- #define DBL 1
- #define BADFMT 2
- #define QUAD 3
- /* Types */
- typedef int boolean;
- typedef int FORMAT;
- typedef int VOID;
- /* Declare status register equivalent to FPUs architecture.
- *
- * 0 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 920 1 2 3 4 5 6 7 8 930 1
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * |V|Z|O|U|I|C| rsv | model | version |RM |rsv|T|r|V|Z|O|U|I|
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- */
- #define Cbit(object) Bitfield_extract( 5, 1,object)
- #define Tbit(object) Bitfield_extract( 25, 1,object)
- #define Roundingmode(object) Bitfield_extract( 21, 2,object)
- #define Invalidtrap(object) Bitfield_extract( 27, 1,object)
- #define Divisionbyzerotrap(object) Bitfield_extract( 28, 1,object)
- #define Overflowtrap(object) Bitfield_extract( 29, 1,object)
- #define Underflowtrap(object) Bitfield_extract( 30, 1,object)
- #define Inexacttrap(object) Bitfield_extract( 31, 1,object)
- #define Invalidflag(object) Bitfield_extract( 0, 1,object)
- #define Divisionbyzeroflag(object) Bitfield_extract( 1, 1,object)
- #define Overflowflag(object) Bitfield_extract( 2, 1,object)
- #define Underflowflag(object) Bitfield_extract( 3, 1,object)
- #define Inexactflag(object) Bitfield_extract( 4, 1,object)
- #define Allflags(object) Bitfield_extract( 0, 5,object)
- /* Definitions relevant to the status register */
- /* Rounding Modes */
- #define ROUNDNEAREST 0
- #define ROUNDZERO 1
- #define ROUNDPLUS 2
- #define ROUNDMINUS 3
- /* Exceptions */
- #define NOEXCEPTION 0x0
- #define INVALIDEXCEPTION 0x20
- #define DIVISIONBYZEROEXCEPTION 0x10
- #define OVERFLOWEXCEPTION 0x08
- #define UNDERFLOWEXCEPTION 0x04
- #define INEXACTEXCEPTION 0x02
- #define UNIMPLEMENTEDEXCEPTION 0x01
- /* New exceptions for the 2E Opcode */
- #define OPC_2E_INVALIDEXCEPTION 0x30
- #define OPC_2E_OVERFLOWEXCEPTION 0x18
- #define OPC_2E_UNDERFLOWEXCEPTION 0x0c
- #define OPC_2E_INEXACTEXCEPTION 0x12
- /* Declare exception registers equivalent to FPUs architecture
- *
- * 0 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 920 1 2 3 4 5 6 7 8 930 1
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * |excepttype | r1 | r2/ext | operation |parm |n| t/cond |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- */
- #define Allexception(object) (object)
- #define Exceptiontype(object) Bitfield_extract( 0, 6,object)
- #define Instructionfield(object) Bitfield_mask( 6,26,object)
- #define Parmfield(object) Bitfield_extract( 23, 3,object)
- #define Rabit(object) Bitfield_extract( 24, 1,object)
- #define Ibit(object) Bitfield_extract( 25, 1,object)
- #define Set_exceptiontype(object,value) Bitfield_deposit(value, 0, 6,object)
- #define Set_parmfield(object,value) Bitfield_deposit(value, 23, 3,object)
- #define Set_exceptiontype_and_instr_field(exception,instruction,object)
- object = exception << 26 | instruction
- /* Declare the condition field
- *
- * 0 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 920 1 2 3 4 5 6 7 8 930 1
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | |G|L|E|U|X|
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- */
- #define Allexception(object) (object)
- #define Greaterthanbit(object) Bitfield_extract( 27, 1,object)
- #define Lessthanbit(object) Bitfield_extract( 28, 1,object)
- #define Equalbit(object) Bitfield_extract( 29, 1,object)
- #define Unorderedbit(object) Bitfield_extract( 30, 1,object)
- #define Exceptionbit(object) Bitfield_extract( 31, 1,object)
- /* An alias name for the status register */
- #define Fpustatus_register (*status)
- /**************************************************
- * Status register referencing and manipulation. *
- **************************************************/
- /* Rounding mode */
- #define Rounding_mode() Roundingmode(Fpustatus_register)
- #define Is_rounding_mode(rmode)
- (Roundingmode(Fpustatus_register) == rmode)
- #define Set_rounding_mode(value)
- Bitfield_deposit(value,21,2,Fpustatus_register)
- /* Boolean testing of the trap enable bits */
- #define Is_invalidtrap_enabled() Invalidtrap(Fpustatus_register)
- #define Is_divisionbyzerotrap_enabled() Divisionbyzerotrap(Fpustatus_register)
- #define Is_overflowtrap_enabled() Overflowtrap(Fpustatus_register)
- #define Is_underflowtrap_enabled() Underflowtrap(Fpustatus_register)
- #define Is_inexacttrap_enabled() Inexacttrap(Fpustatus_register)
- /* Set the indicated flags in the status register */
- #define Set_invalidflag() Bitfield_deposit(1,0,1,Fpustatus_register)
- #define Set_divisionbyzeroflag() Bitfield_deposit(1,1,1,Fpustatus_register)
- #define Set_overflowflag() Bitfield_deposit(1,2,1,Fpustatus_register)
- #define Set_underflowflag() Bitfield_deposit(1,3,1,Fpustatus_register)
- #define Set_inexactflag() Bitfield_deposit(1,4,1,Fpustatus_register)
- #define Clear_all_flags() Bitfield_deposit(0,0,5,Fpustatus_register)
- /* Manipulate the trap and condition code bits (tbit and cbit) */
- #define Set_tbit() Bitfield_deposit(1,25,1,Fpustatus_register)
- #define Clear_tbit() Bitfield_deposit(0,25,1,Fpustatus_register)
- #define Is_tbit_set() Tbit(Fpustatus_register)
- #define Is_cbit_set() Cbit(Fpustatus_register)
- #define Set_status_cbit(value)
- Bitfield_deposit(value,5,1,Fpustatus_register)
- /*******************************
- * Condition field referencing *
- *******************************/
- #define Unordered(cond) Unorderedbit(cond)
- #define Equal(cond) Equalbit(cond)
- #define Lessthan(cond) Lessthanbit(cond)
- #define Greaterthan(cond) Greaterthanbit(cond)
- #define Exception(cond) Exceptionbit(cond)
- /* Defines for the extension */
- #define Ext_isone_sign(extent) (Extsign(extent))
- #define Ext_isnotzero(extent)
- (Extall(extent))
- #define Ext_isnotzero_lower(extent)
- (Extlow31(extent))
- #define Ext_leftshiftby1(extent)
- Extall(extent) <<= 1
- #define Ext_negate(extent)
- (int )Extall(extent) = 0 - (int )Extall(extent)
- #define Ext_setone_low(extent) Bitfield_deposit(1,31,1,extent)
- #define Ext_setzero(extent) Extall(extent) = 0
- typedef int operation;
- /* error messages */
- #define NONE 0
- #define UNDEFFPINST 1
- /* Function definitions: opcode, opclass */
- #define FTEST (1<<2) | 0
- #define FCPY (2<<2) | 0
- #define FABS (3<<2) | 0
- #define FSQRT (4<<2) | 0
- #define FRND (5<<2) | 0
- #define FCNVFF (0<<2) | 1
- #define FCNVXF (1<<2) | 1
- #define FCNVFX (2<<2) | 1
- #define FCNVFXT (3<<2) | 1
- #define FCMP (0<<2) | 2
- #define FADD (0<<2) | 3
- #define FSUB (1<<2) | 3
- #define FMPY (2<<2) | 3
- #define FDIV (3<<2) | 3
- #define FREM (4<<2) | 3