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Diffstat (limited to 'mpi/mpi-internal.h')
| -rw-r--r-- | mpi/mpi-internal.h | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/mpi/mpi-internal.h b/mpi/mpi-internal.h new file mode 100644 index 000000000..b5c00b6c4 --- /dev/null +++ b/mpi/mpi-internal.h @@ -0,0 +1,198 @@ +/* mpi-internal.h - Internal to the Multi Precision Integers + * Copyright (c) 1997 by Werner Koch (dd9jn) + * + * This file is part of G10. + * + * G10 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 of the License, or + * (at your option) any later version. + * + * G10 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 + */ + +#ifndef G10_MPI_INTERNAL_H +#define G10_MPI_INTERNAL_H + +#include "mpi.h" + + + +typedef mpi_limb_t *mpi_ptr_t; /* pointer to a limb */ +typedef int mpi_size_t; /* (must be a signed type) */ + +#define ABS(x) (x >= 0 ? x : -x) +#define MIN(l,o) ((l) < (o) ? (l) : (o)) +#define MAX(h,i) ((h) > (i) ? (h) : (i)) +#define RESIZE_IF_NEEDED(a,b) \ + do { \ + if( (a)->alloced < (b) ) \ + mpi_resize((a), (b)); \ + } while(0) + +/* Copy N limbs from S to D. */ +#define MPN_COPY( d, s, n) \ + do { \ + mpi_size_t _i; \ + for( _i = 0; _i < (n); _i++ ) \ + (d)[_i] = (s)[_i]; \ + } while(0) + +#define MPN_COPY_DECR( d, s, n ) \ + do { \ + mpi_size_t _i; \ + for( _i = (n)-1; _i >= 0; _i--) \ + (d)[_i] = (s)[_i]; \ + } while(0) + +/* Zero N limbs at D */ +#define MPN_ZERO(d, n) \ + do { \ + int _i; \ + for( _i = 0; _i < (n); _i++ ) \ + (d)[_i] = 0; \ + } while (0) + +#define MPN_NORMALIZE(d, n) \ + do { \ + while( (n) > 0 ) { \ + if( (d)[(n)-1] ) \ + break; \ + (n)--; \ + } \ + } while(0) + +#define MPN_NORMALIZE_NOT_ZERO(d, n) \ + do { \ + for(;;) { \ + if( (d)[(n)-1] ) \ + break; \ + (n)--; \ + } \ + } while(0) + +#define MPN_MUL_N_RECURSE(prodp, up, vp, size, tspace) \ + do { \ + if( (size) < KARATSUBA_THRESHOLD ) \ + mul_n_basecase (prodp, up, vp, size); \ + else \ + mul_n (prodp, up, vp, size, tspace); \ + } while (0); + + +/* Divide the two-limb number in (NH,,NL) by D, with DI being the largest + * limb not larger than (2**(2*BITS_PER_MP_LIMB))/D - (2**BITS_PER_MP_LIMB). + * If this would yield overflow, DI should be the largest possible number + * (i.e., only ones). For correct operation, the most significant bit of D + * has to be set. Put the quotient in Q and the remainder in R. + */ +#define UDIV_QRNND_PREINV(q, r, nh, nl, d, di) \ + do { \ + mpi_limb_t _q, _ql, _r; \ + mpi_limb_t _xh, _xl; \ + umul_ppmm (_q, _ql, (nh), (di)); \ + _q += (nh); /* DI is 2**BITS_PER_MPI_LIMB too small */ \ + umul_ppmm (_xh, _xl, _q, (d)); \ + sub_ddmmss (_xh, _r, (nh), (nl), _xh, _xl); \ + if( _xh ) { \ + sub_ddmmss (_xh, _r, _xh, _r, 0, (d)); \ + _q++; \ + if( _xh) { \ + sub_ddmmss (_xh, _r, _xh, _r, 0, (d)); \ + _q++; \ + } \ + } \ + if( _r >= (d) ) { \ + _r -= (d); \ + _q++; \ + } \ + (r) = _r; \ + (q) = _q; \ + } while (0) + + +/*-- mpiutil.c --*/ +#ifdef M_DEBUG + #define mpi_alloc_limb_space(n) mpi_debug_alloc_limb_space((n), M_DBGINFO( __LINE__ ) ) + #define mpi_free_limb_space(n) mpi_debug_free_limb_space((n), M_DBGINFO( __LINE__ ) ) + mpi_ptr_t mpi_debug_alloc_limb_space( unsigned nlimbs, const char *info ); + void mpi_debug_free_limb_space( mpi_ptr_t a, const char *info ); +#else + mpi_ptr_t mpi_alloc_limb_space( unsigned nlimbs ); + void mpi_free_limb_space( mpi_ptr_t a ); +#endif +void mpi_assign_limb_space( MPI a, mpi_ptr_t ap, unsigned nlimbs ); + +/*-- mpihelp-add.c --*/ +mpi_limb_t mpihelp_add_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, + mpi_size_t s1_size, mpi_limb_t s2_limb ); +mpi_limb_t mpihelp_add_n( mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, + mpi_ptr_t s2_ptr, mpi_size_t size); +mpi_limb_t mpihelp_add(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size, + mpi_ptr_t s2_ptr, mpi_size_t s2_size); + +/*-- mpihelp-sub.c --*/ +mpi_limb_t mpihelp_sub_1( mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, + mpi_size_t s1_size, mpi_limb_t s2_limb ); +mpi_limb_t mpihelp_sub_n( mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, + mpi_ptr_t s2_ptr, mpi_size_t size); +mpi_limb_t mpihelp_sub(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size, + mpi_ptr_t s2_ptr, mpi_size_t s2_size); + +/*-- mpihelp-cmp.c --*/ +int mpihelp_cmp( mpi_ptr_t op1_ptr, mpi_ptr_t op2_ptr, mpi_size_t size ); + +/*-- mpihelp-mul.c --*/ +mpi_limb_t mpihelp_addmul_1( mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, + mpi_size_t s1_size, mpi_limb_t s2_limb); +mpi_limb_t mpihelp_submul_1( mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, + mpi_size_t s1_size, mpi_limb_t s2_limb); +mpi_limb_t mpihelp_mul_1( mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, + mpi_size_t s1_size, mpi_limb_t s2_limb); +void mpihelp_mul_n( mpi_ptr_t prodp, mpi_ptr_t up, mpi_ptr_t vp, + mpi_size_t size); +mpi_limb_t mpihelp_mul( mpi_ptr_t prodp, mpi_ptr_t up, mpi_size_t usize, + mpi_ptr_t vp, mpi_size_t vsize); + +/*-- mpihelp-div.c --*/ +mpi_limb_t mpihelp_mod_1(mpi_ptr_t dividend_ptr, mpi_size_t dividend_size, + mpi_limb_t divisor_limb); +mpi_limb_t mpihelp_divrem( mpi_ptr_t qp, mpi_size_t qextra_limbs, + mpi_ptr_t np, mpi_size_t nsize, + mpi_ptr_t dp, mpi_size_t dsize); +mpi_limb_t mpihelp_divmod_1( mpi_ptr_t quot_ptr, + mpi_ptr_t dividend_ptr, mpi_size_t dividend_size, + mpi_limb_t divisor_limb); + +/*-- mpihelp-shift.c --*/ +mpi_limb_t mpihelp_lshift( mpi_ptr_t wp, mpi_ptr_t up, mpi_size_t usize, + unsigned cnt); +mpi_limb_t mpihelp_rshift( mpi_ptr_t wp, mpi_ptr_t up, mpi_size_t usize, + unsigned cnt); + + +/* Define stuff for longlong.h. */ +#define W_TYPE_SIZE BITS_PER_MPI_LIMB + typedef mpi_limb_t UWtype; + typedef unsigned int UHWtype; +#if defined (__GNUC__) + typedef unsigned int UQItype __attribute__ ((mode (QI))); + typedef int SItype __attribute__ ((mode (SI))); + typedef unsigned int USItype __attribute__ ((mode (SI))); + typedef int DItype __attribute__ ((mode (DI))); + typedef unsigned int UDItype __attribute__ ((mode (DI))); +#else + typedef unsigned char UQItype; + typedef long SItype; + typedef unsigned long USItype; +#endif + + +#endif /*G10_MPI_INTERNAL_H*/ |