//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include <clc/clcmacro.h>
#include <clc/internal/clc.h>
#include <clc/relational/clc_isnan.h>

_CLC_DEF _CLC_OVERLOAD float __clc_fmax(float x, float y) {
  // fcanonicalize removes sNaNs and flushes denormals if not enabled. Otherwise
  // fmax instruction flushes the values for comparison, but outputs original
  // denormal
  x = __builtin_canonicalizef(x);
  y = __builtin_canonicalizef(y);
  return __builtin_fmaxf(x, y);
}

#ifdef cl_khr_fp64

#pragma OPENCL EXTENSION cl_khr_fp64 : enable

_CLC_DEF _CLC_OVERLOAD double __clc_fmax(double x, double y) {
  x = __builtin_canonicalize(x);
  y = __builtin_canonicalize(y);
  return __builtin_fmax(x, y);
}

#endif
#ifdef cl_khr_fp16

#pragma OPENCL EXTENSION cl_khr_fp16 : enable

_CLC_DEF _CLC_OVERLOAD half __clc_fmax(half x, half y) {
  if (__clc_isnan(x))
    return y;
  if (__clc_isnan(y))
    return x;
  return (y < x) ? x : y;
}

#endif

#define FUNCTION __clc_fmax
#define __CLC_BODY <clc/shared/binary_def_scalarize.inc>
#include <clc/math/gentype.inc>
