/*
 * Copyright (c) 2014 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "math64.h"
#include "sincosD_piby4.h"
#include "remainderD_piby2.h"

__attribute__((overloadable, always_inline, pure, weak)) double
sin(double x)
{
    double y = fabs(x);

    double r, rr;
    int regn;

    if (y < 0x1.0p+47)
        remainder_piby2_medium(y, &r, &rr, &regn);
    else 
        remainder_piby2_large(y, &r, &rr, &regn);

    double2 sc = sincos_piby4(r, rr);

    int2 s = as_int2(regn & 1 ? sc.hi : sc.lo);
    s.hi ^= ((regn > 1) << 31) ^ ((x < 0.0) << 31);

    return  isinf(x) | isnan(x) ? as_double(QNANBITPATT_DP64) : as_double(s);
}