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Diffstat (limited to 'contrib/bc/include/bcl.h')
-rw-r--r-- | contrib/bc/include/bcl.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/contrib/bc/include/bcl.h b/contrib/bc/include/bcl.h new file mode 100644 index 000000000000..05f1631e5534 --- /dev/null +++ b/contrib/bc/include/bcl.h @@ -0,0 +1,184 @@ +/* + * ***************************************************************************** + * + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2018-2020 Gavin D. Howard and contributors. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * ***************************************************************************** + * + * The public header for the bc library. + * + */ + +#ifndef BC_BCL_H +#define BC_BCL_H + +#include <stdbool.h> +#include <stdlib.h> +#include <limits.h> +#include <stdint.h> +#include <sys/types.h> + +#define BC_SEED_ULONGS (4) +#define BC_SEED_SIZE (sizeof(long) * BC_SEED_ULONGS) + +// For some reason, LONG_BIT is not defined in some versions of gcc. +// I define it here to the minimum accepted value in the POSIX standard. +#ifndef LONG_BIT +#define LONG_BIT (32) +#endif // LONG_BIT + +#ifndef BC_LONG_BIT +#define BC_LONG_BIT LONG_BIT +#endif // BC_LONG_BIT + +#if BC_LONG_BIT > LONG_BIT +#error BC_LONG_BIT cannot be greater than LONG_BIT +#endif // BC_LONG_BIT > LONG_BIT + +#if BC_LONG_BIT >= 64 + +typedef uint64_t BclBigDig; +typedef uint64_t BclRandInt; + +#elif BC_LONG_BIT >= 32 + +typedef uint32_t BclBigDig; +typedef uint32_t BclRandInt; + +#else + +#error BC_LONG_BIT must be at least 32 + +#endif // BC_LONG_BIT >= 64 + +typedef enum BclError { + + BCL_ERROR_NONE, + + BCL_ERROR_INVALID_NUM, + BCL_ERROR_INVALID_CONTEXT, + BCL_ERROR_SIGNAL, + + BCL_ERROR_MATH_NEGATIVE, + BCL_ERROR_MATH_NON_INTEGER, + BCL_ERROR_MATH_OVERFLOW, + BCL_ERROR_MATH_DIVIDE_BY_ZERO, + + BCL_ERROR_PARSE_INVALID_STR, + + BCL_ERROR_FATAL_ALLOC_ERR, + BCL_ERROR_FATAL_UNKNOWN_ERR, + + BCL_ERROR_NELEMS, + +} BclError; + +typedef struct BclNumber { + + size_t i; + +} BclNumber; + +struct BclCtxt; + +typedef struct BclCtxt* BclContext; + +void bcl_handleSignal(void); +bool bcl_running(void); + +BclError bcl_init(void); +void bcl_free(void); + +bool bcl_abortOnFatalError(void); +void bcl_setAbortOnFatalError(bool abrt); + +void bcl_gc(void); + +BclError bcl_pushContext(BclContext ctxt); +void bcl_popContext(void); +BclContext bcl_context(void); + +BclContext bcl_ctxt_create(void); +void bcl_ctxt_free(BclContext ctxt); +void bcl_ctxt_freeNums(BclContext ctxt); + +size_t bcl_ctxt_scale(BclContext ctxt); +void bcl_ctxt_setScale(BclContext ctxt, size_t scale); +size_t bcl_ctxt_ibase(BclContext ctxt); +void bcl_ctxt_setIbase(BclContext ctxt, size_t ibase); +size_t bcl_ctxt_obase(BclContext ctxt); +void bcl_ctxt_setObase(BclContext ctxt, size_t obase); + +BclError bcl_err(BclNumber n); + +BclNumber bcl_num_create(void); +void bcl_num_free(BclNumber n); + +bool bcl_num_neg(BclNumber n); +void bcl_num_setNeg(BclNumber n, bool neg); +size_t bcl_num_scale(BclNumber n); +BclError bcl_num_setScale(BclNumber n, size_t scale); +size_t bcl_num_len(BclNumber n); + +BclError bcl_copy(BclNumber d, BclNumber s); +BclNumber bcl_dup(BclNumber s); + +BclError bcl_bigdig(BclNumber n, BclBigDig *result); +BclNumber bcl_bigdig2num(BclBigDig val); + +BclNumber bcl_add(BclNumber a, BclNumber b); +BclNumber bcl_sub(BclNumber a, BclNumber b); +BclNumber bcl_mul(BclNumber a, BclNumber b); +BclNumber bcl_div(BclNumber a, BclNumber b); +BclNumber bcl_mod(BclNumber a, BclNumber b); +BclNumber bcl_pow(BclNumber a, BclNumber b); +BclNumber bcl_lshift(BclNumber a, BclNumber b); +BclNumber bcl_rshift(BclNumber a, BclNumber b); +BclNumber bcl_sqrt(BclNumber a); +BclError bcl_divmod(BclNumber a, BclNumber b, BclNumber *c, BclNumber *d); +BclNumber bcl_modexp(BclNumber a, BclNumber b, BclNumber c); + +ssize_t bcl_cmp(BclNumber a, BclNumber b); + +void bcl_zero(BclNumber n); +void bcl_one(BclNumber n); + +BclNumber bcl_parse(const char *restrict val); +char* bcl_string(BclNumber n); + +BclNumber bcl_irand(BclNumber a); +BclNumber bcl_frand(size_t places); +BclNumber bcl_ifrand(BclNumber a, size_t places); + +BclError bcl_rand_seedWithNum(BclNumber n); +BclError bcl_rand_seed(unsigned char seed[BC_SEED_SIZE]); +void bcl_rand_reseed(void); +BclNumber bcl_rand_seed2num(void); +BclRandInt bcl_rand_int(void); +BclRandInt bcl_rand_bounded(BclRandInt bound); + +#endif // BC_BCL_H |