Server : Apache/2.4.41 (Ubuntu) System : Linux absol.cf 5.4.0-198-generic #218-Ubuntu SMP Fri Sep 27 20:18:53 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /proc/thread-self/root/usr/share/emscripten/system/lib/compiler-rt/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

/* ===-- muldi3.c - Implement __muldi3 -------------------------------------===
 *
 *                     The LLVM Compiler Infrastructure
 *
 * This file is dual licensed under the MIT and the University of Illinois Open
 * Source Licenses. See LICENSE.TXT for details.
 *
 * ===----------------------------------------------------------------------===
 *
 * This file implements __muldi3 for the compiler_rt library.
 *
 * ===----------------------------------------------------------------------===
 */

#include "int_lib.h"

/* Returns: a * b */

static
di_int
__muldsi3(su_int a, su_int b)
{
    dwords r;
    const int bits_in_word_2 = (int)(sizeof(si_int) * CHAR_BIT) / 2;
    const su_int lower_mask = (su_int)~0 >> bits_in_word_2;
    r.s.low = (a & lower_mask) * (b & lower_mask);
    su_int t = r.s.low >> bits_in_word_2;
    r.s.low &= lower_mask;
    t += (a >> bits_in_word_2) * (b & lower_mask);
    r.s.low += (t & lower_mask) << bits_in_word_2;
    r.s.high = t >> bits_in_word_2;
    t = r.s.low >> bits_in_word_2;
    r.s.low &= lower_mask;
    t += (b >> bits_in_word_2) * (a & lower_mask);
    r.s.low += (t & lower_mask) << bits_in_word_2;
    r.s.high += t >> bits_in_word_2;
    r.s.high += (a >> bits_in_word_2) * (b >> bits_in_word_2);
    return r.all;
}

/* Returns: a * b */

ARM_EABI_FNALIAS(lmul, muldi3)

COMPILER_RT_ABI di_int
__muldi3(di_int a, di_int b)
{
    dwords x;
    x.all = a;
    dwords y;
    y.all = b;
    dwords r;
    r.all = __muldsi3(x.s.low, y.s.low);
    r.s.high += x.s.high * y.s.low + x.s.low * y.s.high;
    return r.all;
}