Edit File: quad.h
/* Software floating-point emulation. Definitions for IEEE Quad Precision. Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson (rth@cygnus.com), Jakub Jelinek (jj@ultra.linux.cz), David S. Miller (davem@redhat.com) and Peter Maydell (pmaydell@chiark.greenend.org.uk). The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef __MATH_EMU_QUAD_H__ #define __MATH_EMU_QUAD_H__ #if _FP_W_TYPE_SIZE < 32 #error "Here's a nickel, kid. Go buy yourself a real computer." #endif #if _FP_W_TYPE_SIZE < 64 #define _FP_FRACTBITS_Q (4*_FP_W_TYPE_SIZE) #else #define _FP_FRACTBITS_Q (2*_FP_W_TYPE_SIZE) #endif #define _FP_FRACBITS_Q 113 #define _FP_FRACXBITS_Q (_FP_FRACTBITS_Q - _FP_FRACBITS_Q) #define _FP_WFRACBITS_Q (_FP_WORKBITS + _FP_FRACBITS_Q) #define _FP_WFRACXBITS_Q (_FP_FRACTBITS_Q - _FP_WFRACBITS_Q) #define _FP_EXPBITS_Q 15 #define _FP_EXPBIAS_Q 16383 #define _FP_EXPMAX_Q 32767 #define _FP_QNANBIT_Q \ ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-2) % _FP_W_TYPE_SIZE) #define _FP_IMPLBIT_Q \ ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-1) % _FP_W_TYPE_SIZE) #define _FP_OVERFLOW_Q \ ((_FP_W_TYPE)1 << (_FP_WFRACBITS_Q % _FP_W_TYPE_SIZE)) #if _FP_W_TYPE_SIZE < 64 union _FP_UNION_Q { long double flt; struct { #if __BYTE_ORDER == __BIG_ENDIAN unsigned sign : 1; unsigned exp : _FP_EXPBITS_Q; unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); unsigned long frac2 : _FP_W_TYPE_SIZE; unsigned long frac1 : _FP_W_TYPE_SIZE; unsigned long frac0 : _FP_W_TYPE_SIZE; #else unsigned long frac0 : _FP_W_TYPE_SIZE; unsigned long frac1 : _FP_W_TYPE_SIZE; unsigned long frac2 : _FP_W_TYPE_SIZE; unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); unsigned exp : _FP_EXPBITS_Q; unsigned sign : 1; #endif /* not bigendian */ } bits __attribute__((packed)); }; #define FP_DECL_Q(X) _FP_DECL(4,X) #define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_4(Q,X,val) #define FP_UNPACK_RAW_QP(X,val) _FP_UNPACK_RAW_4_P(Q,X,val) #define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_4(Q,val,X) #define FP_PACK_RAW_QP(val,X) \ do { \ if (!FP_INHIBIT_RESULTS) \ _FP_PACK_RAW_4_P(Q,val,X); \ } while (0) #define FP_UNPACK_Q(X,val) \ do { \ _FP_UNPACK_RAW_4(Q,X,val); \ _FP_UNPACK_CANONICAL(Q,4,X); \ } while (0) #define FP_UNPACK_QP(X,val) \ do { \ _FP_UNPACK_RAW_4_P(Q,X,val); \ _FP_UNPACK_CANONICAL(Q,4,X); \ } while (0) #define FP_PACK_Q(val,X) \ do { \ _FP_PACK_CANONICAL(Q,4,X); \ _FP_PACK_RAW_4(Q,val,X); \ } while (0) #define FP_PACK_QP(val,X) \ do { \ _FP_PACK_CANONICAL(Q,4,X); \ if (!FP_INHIBIT_RESULTS) \ _FP_PACK_RAW_4_P(Q,val,X); \ } while (0) #define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN(Q,4,X) #define FP_NEG_Q(R,X) _FP_NEG(Q,4,R,X) #define FP_ADD_Q(R,X,Y) _FP_ADD(Q,4,R,X,Y) #define FP_SUB_Q(R,X,Y) _FP_SUB(Q,4,R,X,Y) #define FP_MUL_Q(R,X,Y) _FP_MUL(Q,4,R,X,Y) #define FP_DIV_Q(R,X,Y) _FP_DIV(Q,4,R,X,Y) #define FP_SQRT_Q(R,X) _FP_SQRT(Q,4,R,X) #define _FP_SQRT_MEAT_Q(R,S,T,X,Q) _FP_SQRT_MEAT_4(R,S,T,X,Q) #define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,4,r,X,Y,un) #define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,4,r,X,Y) #define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,4,r,X,rsz,rsg) #define FP_TO_INT_ROUND_Q(r,X,rsz,rsg) _FP_TO_INT_ROUND(Q,4,r,X,rsz,rsg) #define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,4,X,r,rs,rt) #define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_4(X) #define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_4(X) #else /* not _FP_W_TYPE_SIZE < 64 */ union _FP_UNION_Q { long double flt /* __attribute__((mode(TF))) */ ; struct { #if __BYTE_ORDER == __BIG_ENDIAN unsigned sign : 1; unsigned exp : _FP_EXPBITS_Q; unsigned long frac1 : _FP_FRACBITS_Q-(_FP_IMPLBIT_Q != 0)-_FP_W_TYPE_SIZE; unsigned long frac0 : _FP_W_TYPE_SIZE; #else unsigned long frac0 : _FP_W_TYPE_SIZE; unsigned long frac1 : _FP_FRACBITS_Q-(_FP_IMPLBIT_Q != 0)-_FP_W_TYPE_SIZE; unsigned exp : _FP_EXPBITS_Q; unsigned sign : 1; #endif } bits; }; #define FP_DECL_Q(X) _FP_DECL(2,X) #define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_2(Q,X,val) #define FP_UNPACK_RAW_QP(X,val) _FP_UNPACK_RAW_2_P(Q,X,val) #define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_2(Q,val,X) #define FP_PACK_RAW_QP(val,X) \ do { \ if (!FP_INHIBIT_RESULTS) \ _FP_PACK_RAW_2_P(Q,val,X); \ } while (0) #define FP_UNPACK_Q(X,val) \ do { \ _FP_UNPACK_RAW_2(Q,X,val); \ _FP_UNPACK_CANONICAL(Q,2,X); \ } while (0) #define FP_UNPACK_QP(X,val) \ do { \ _FP_UNPACK_RAW_2_P(Q,X,val); \ _FP_UNPACK_CANONICAL(Q,2,X); \ } while (0) #define FP_PACK_Q(val,X) \ do { \ _FP_PACK_CANONICAL(Q,2,X); \ _FP_PACK_RAW_2(Q,val,X); \ } while (0) #define FP_PACK_QP(val,X) \ do { \ _FP_PACK_CANONICAL(Q,2,X); \ if (!FP_INHIBIT_RESULTS) \ _FP_PACK_RAW_2_P(Q,val,X); \ } while (0) #define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN(Q,2,X) #define FP_NEG_Q(R,X) _FP_NEG(Q,2,R,X) #define FP_ADD_Q(R,X,Y) _FP_ADD(Q,2,R,X,Y) #define FP_SUB_Q(R,X,Y) _FP_SUB(Q,2,R,X,Y) #define FP_MUL_Q(R,X,Y) _FP_MUL(Q,2,R,X,Y) #define FP_DIV_Q(R,X,Y) _FP_DIV(Q,2,R,X,Y) #define FP_SQRT_Q(R,X) _FP_SQRT(Q,2,R,X) #define _FP_SQRT_MEAT_Q(R,S,T,X,Q) _FP_SQRT_MEAT_2(R,S,T,X,Q) #define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,2,r,X,Y,un) #define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,2,r,X,Y) #define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,2,r,X,rsz,rsg) #define FP_TO_INT_ROUND_Q(r,X,rsz,rsg) _FP_TO_INT_ROUND(Q,2,r,X,rsz,rsg) #define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,2,X,r,rs,rt) #define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_2(X) #define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_2(X) #endif /* not _FP_W_TYPE_SIZE < 64 */ #endif /* __MATH_EMU_QUAD_H__ */