/*
 * 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.
 */
// HSAIL versions of native built-ins

// HSAIL intrinsic functions
extern __attribute__((pure)) float __hsail_ncos_f32(float);
extern __attribute__((pure)) float __hsail_nexp2_f32(float);
extern __attribute__((pure)) float __hsail_nlog2_f32(float);
extern __attribute__((pure)) float __hsail_nrcp_f32(float);
extern __attribute__((pure)) float __hsail_nrsqrt_f32(float);
extern __attribute__((pure)) float __hsail_nsin_f32(float);
extern __attribute__((pure)) float __hsail_nsqrt_f32(float);

// Value of log2(10)
#define M_LOG2_10_F  3.32192809488736f
// Value of 1 / log2(10)
#define M_RLOG2_10_F 0.30102999566398f
// Value of 1 / M_LOG2E_F = 1 / log2(e)
#define M_RLOG2_E_F  0.69314718055995f


__attribute__((overloadable, always_inline)) float
native_cos(float x) {
    return __hsail_ncos_f32(x);
}

__attribute__((overloadable, always_inline)) float
native_divide(float x, float y) {
    return native_recip(y)*x;
}

__attribute__((overloadable, always_inline)) float
native_exp2(float x) {
    return __hsail_nexp2_f32(x);
}

__attribute__((overloadable,weak,always_inline)) float
native_exp(float f) {
  // There is no native exp in HSAIL, but we have exp2 instruction.
  return __hsail_nexp2_f32(M_LOG2E_F*f);
}

__attribute__((overloadable,weak,always_inline)) float
native_exp10(float f) {
  // There is no native exp10 in HSAIL, but we have exp2 instruction.
  return __hsail_nexp2_f32(M_LOG2_10_F*f);
}

__attribute__((overloadable, always_inline)) float
native_log2(float x) {
    return __hsail_nlog2_f32(x);
}

__attribute__((overloadable,weak,always_inline)) float
native_log(float f) {
  // There is no native log in HSAIL, but we have log2 instruction.
  return __hsail_nlog2_f32(f)*M_RLOG2_E_F;
}

__attribute__((overloadable,weak,always_inline)) float
native_log10(float f) {
  // There is no native log10 in HSAIL, but we have log2 instruction.
  return __hsail_nlog2_f32(f)*M_RLOG2_10_F;
}

__attribute__((overloadable, always_inline)) float
native_powr(float x, float y)
{
    return native_exp2(native_log2(x)*y);
}

__attribute__((overloadable, always_inline)) float
native_recip(float x) {
    return __hsail_nrcp_f32(x);
}

__attribute__((overloadable, always_inline)) float
native_rsqrt(float x)
{
    return __hsail_nrsqrt_f32(x);
}

__attribute__((overloadable, always_inline)) float
native_sin(float x) {
    return __hsail_nsin_f32(x);
}

__attribute__((overloadable, always_inline)) float
native_sqrt(float x) {
    return __hsail_nsqrt_f32(x);
}

extern __attribute__((pure)) float __amdil_tan_f32(float,float);
__attribute__((overloadable, always_inline)) float
native_tan(float x)
{
    return native_sin(x)*native_recip(native_cos(x));
}