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44d4804d19
Merge commit 2f57ecae4b
This is a new major release with a number of changes and extensions:
- Limited the number of temporary numbers and made the space for them
static so that allocating more space for them cannot fail.
- Allowed integers with non-zero scale to be used with power, places,
and shift operators.
- Added greatest common divisor and least common multiple to lib2.bc.
- Made bc and dc UTF-8 capable.
- Added the ability for users to have bc and dc quit on SIGINT.
- Added the ability for users to disable prompt and TTY mode by
environment variables.
- Added the ability for users to redefine keywords.
- Added dc's modular exponentiation and divmod to bc.
- Added the ability to assign strings to variables and array elements
and pass them to functions in bc.
- Added dc's asciify command and stream printing to bc.
- Added bitwise and, or, xor, left shift, right shift, reverse,
left rotate, right rotate, and mod functions to lib2.bc.
- Added the functions s2u(x) and s2un(x,n), to lib2.bc.
MFC after: 1 week
101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
/*
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* *****************************************************************************
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2018-2021 Gavin D. Howard and contributors.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* *****************************************************************************
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*
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* A generator for bitwise operations test.
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*
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#define NTESTS (100)
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/**
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* Abort with an error message.
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* @param msg The error message.
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*/
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void err(const char *msg) {
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fprintf(stderr, "%s\n", msg);
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abort();
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}
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int main(void) {
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uint64_t a = 0, b = 0;
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size_t i;
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// We attempt to open this or /dev/random to get random data.
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int fd = open("/dev/urandom", O_RDONLY);
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if (fd < 0) {
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fd = open("/dev/random", O_RDONLY);
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if (fd < 0) err("cannot open a random number generator");
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}
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// Generate NTESTS tests.
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for (i = 0; i < NTESTS; ++i) {
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ssize_t nread;
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// Generate random data for the first operand.
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nread = read(fd, (char*) &a, sizeof(uint64_t));
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if (nread != sizeof(uint64_t)) err("I/O error");
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// Generate random data for the second operand.
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nread = read(fd, (char*) &b, sizeof(uint64_t));
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if (nread != sizeof(uint64_t)) err("I/O error");
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// Output the tests to stdout.
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printf("band(%lu, %lu)\n", a, b);
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printf("bor(%lu, %lu)\n", a, b);
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printf("bxor(%lu, %lu)\n", a, b);
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printf("blshift(%llu, %lu)\n", a & ((1ULL << 32) - 1), b & 31);
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printf("brshift(%llu, %lu)\n", a & ((1ULL << 32) - 1), b & 31);
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printf("blshift(%llu, %lu)\n", b & ((1ULL << 32) - 1), a & 31);
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printf("brshift(%llu, %lu)\n", b & ((1ULL << 32) - 1), a & 31);
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// Output the results to stderr.
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fprintf(stderr, "%lu\n", a & b);
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fprintf(stderr, "%lu\n", a | b);
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fprintf(stderr, "%lu\n", a ^ b);
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fprintf(stderr, "%llu\n", (a & ((1ULL << 32) - 1)) << (b & 31));
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fprintf(stderr, "%llu\n", (a & ((1ULL << 32) - 1)) >> (b & 31));
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fprintf(stderr, "%llu\n", (b & ((1ULL << 32) - 1)) << (a & 31));
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fprintf(stderr, "%llu\n", (b & ((1ULL << 32) - 1)) >> (a & 31));
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}
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return 0;
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}
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