FM / util

/usr/local/lib64/python3.6/site-packages/torch/include/c10/util/

/usr/local/lib64/python3.6/site-packages/torch/include/c10/util

Name	Size	Mode	Actions
accumulate.h	4205	0644	edit dl rm
AlignOf.h	4835	0644	edit dl rm
Array.h	11354	0644	edit dl rm
ArrayRef.h	9058	0644	edit dl rm
Backtrace.h	364	0644	edit dl rm
BFloat16-inl.h	9222	0644	edit dl rm
BFloat16-math.h	5217	0644	edit dl rm
BFloat16.h	2372	0644	edit dl rm
Bitset.h	3414	0644	edit dl rm
C++17.h	13329	0644	edit dl rm
complex.h	17542	0644	edit dl rm
complex_math.h	10902	0644	edit dl rm
complex_utils.h	958	0644	edit dl rm
ConstexprCrc.h	6633	0644	edit dl rm
copysign.h	866	0644	edit dl rm
DeadlockDetection.h	1920	0644	edit dl rm
Deprecated.h	3579	0644	edit dl rm
either.h	6423	0644	edit dl rm
env.h	835	0644	edit dl rm
Exception.h	24723	0644	edit dl rm
ExclusivelyOwned.h	4759	0644	edit dl rm
Flags.h	10056	0644	edit dl rm
flat_hash_map.h	61655	0644	edit dl rm
FunctionRef.h	2301	0644	edit dl rm
Half-inl.h	8674	0644	edit dl rm
Half.h	18965	0644	edit dl rm
hash.h	5084	0644	edit dl rm
IdWrapper.h	2348	0644	edit dl rm
intrusive_ptr.h	35563	0644	edit dl rm
in_place.h	350	0644	edit dl rm
irange.h	2679	0644	edit dl rm
LeftRight.h	6016	0644	edit dl rm
llvmMathExtras.h	29168	0644	edit dl rm
Logging.h	11256	0644	edit dl rm
logging_is_google_glog.h	2031	0644	edit dl rm
logging_is_not_google_glog.h	8271	0644	edit dl rm
MathConstants.h	858	0644	edit dl rm
math_compat.h	7296	0644	edit dl rm
MaybeOwned.h	6689	0644	edit dl rm
Metaprogramming.h	15288	0644	edit dl rm
numa.h	696	0644	edit dl rm
Optional.h	35592	0644	edit dl rm
order_preserving_flat_hash_map.h	65482	0644	edit dl rm
overloaded.h	709	0644	edit dl rm
python_stub.h	56	0644	edit dl rm
qint8.h	472	0644	edit dl rm
qint32.h	319	0644	edit dl rm
quint4x2.h	366	0644	edit dl rm
quint8.h	320	0644	edit dl rm
Registry.h	12242	0644	edit dl rm
reverse_iterator.h	8796	0644	edit dl rm
ScopeExit.h	1345	0644	edit dl rm
signal_handler.h	3154	0644	edit dl rm
SmallBuffer.h	1243	0644	edit dl rm
SmallVector.h	34456	0644	edit dl rm
sparse_bitset.h	26511	0644	edit dl rm
StringUtil.h	4538	0644	edit dl rm
string_utils.h	3989	0644	edit dl rm
string_view.h	20189	0644	edit dl rm
tempfile.h	6029	0644	edit dl rm
ThreadLocal.h	3883	0644	edit dl rm
ThreadLocalDebugInfo.h	2603	0644	edit dl rm
thread_name.h	148	0644	edit dl rm
Type.h	607	0644	edit dl rm
TypeCast.h	6972	0644	edit dl rm
typeid.h	18793	0644	edit dl rm
TypeIndex.h	5251	0644	edit dl rm
TypeList.h	16901	0644	edit dl rm
TypeTraits.h	5368	0644	edit dl rm
Unicode.h	295	0644	edit dl rm
UniqueVoidPtr.h	4117	0644	edit dl rm
Unroll.h	667	0644	edit dl rm
variant.h	95182	0644	edit dl rm
win32-headers.h	858	0644	edit dl rm

Edit: /usr/local/lib64/python3.6/site-packages/torch/include/c10/util/BFloat16-math.h (5217B)

#pragma once

#include <c10/util/BFloat16-inl.h>
#include <c10/util/math_compat.h>

namespace std {

/// Used by vec256<c10::BFloat16>::map
inline c10::BFloat16 acos(c10::BFloat16 a) {
  return std::acos(float(a));
}
inline c10::BFloat16 asin(c10::BFloat16 a) {
  return std::asin(float(a));
}
inline c10::BFloat16 atan(c10::BFloat16 a) {
  return std::atan(float(a));
}
inline c10::BFloat16 erf(c10::BFloat16 a) {
  return std::erf(float(a));
}
inline c10::BFloat16 erfc(c10::BFloat16 a) {
  return std::erfc(float(a));
}
inline c10::BFloat16 exp(c10::BFloat16 a) {
  return std::exp(float(a));
}
inline c10::BFloat16 expm1(c10::BFloat16 a) {
  return std::expm1(float(a));
}
inline c10::BFloat16 log(c10::BFloat16 a) {
  return std::log(float(a));
}
inline c10::BFloat16 log10(c10::BFloat16 a) {
  return std::log10(float(a));
}
inline c10::BFloat16 log1p(c10::BFloat16 a) {
  return std::log1p(float(a));
}
inline c10::BFloat16 log2(c10::BFloat16 a) {
  return std::log2(float(a));
}
inline c10::BFloat16 ceil(c10::BFloat16 a) {
  return std::ceil(float(a));
}
inline c10::BFloat16 cos(c10::BFloat16 a) {
  return std::cos(float(a));
}
inline c10::BFloat16 floor(c10::BFloat16 a) {
  return std::floor(float(a));
}
inline c10::BFloat16 nearbyint(c10::BFloat16 a) {
  return std::nearbyint(float(a));
}
inline c10::BFloat16 sin(c10::BFloat16 a) {
  return std::sin(float(a));
}
inline c10::BFloat16 tan(c10::BFloat16 a) {
  return std::tan(float(a));
}
inline c10::BFloat16 sinh(c10::BFloat16 a) {
  return std::sinh(float(a));
}
inline c10::BFloat16 cosh(c10::BFloat16 a) {
  return std::cosh(float(a));
}
inline c10::BFloat16 tanh(c10::BFloat16 a) {
  return std::tanh(float(a));
}
inline c10::BFloat16 trunc(c10::BFloat16 a) {
  return std::trunc(float(a));
}
inline c10::BFloat16 lgamma(c10::BFloat16 a) {
  return std::lgamma(float(a));
}
inline c10::BFloat16 sqrt(c10::BFloat16 a) {
  return std::sqrt(float(a));
}
inline c10::BFloat16 rsqrt(c10::BFloat16 a) {
  return 1.0 / std::sqrt(float(a));
}
inline c10::BFloat16 abs(c10::BFloat16 a) {
  return std::abs(float(a));
}
#if defined(_MSC_VER) && defined(__CUDACC__)
inline c10::BFloat16 pow(c10::BFloat16 a, double b) {
  return std::pow(float(a), float(b));
}
#else
inline c10::BFloat16 pow(c10::BFloat16 a, double b) {
  return std::pow(float(a), b);
}
#endif
inline c10::BFloat16 pow(c10::BFloat16 a, c10::BFloat16 b) {
  return std::pow(float(a), float(b));
}
inline c10::BFloat16 fmod(c10::BFloat16 a, c10::BFloat16 b) {
  return std::fmod(float(a), float(b));
}

/*
  The following function is inspired from the implementation in `musl`
  Link to License: https://git.musl-libc.org/cgit/musl/tree/COPYRIGHT
  ----------------------------------------------------------------------
  Copyright © 2005-2020 Rich Felker, et al.

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.
  ----------------------------------------------------------------------
 */
C10_HOST_DEVICE inline c10::BFloat16 nextafter(
    c10::BFloat16 from,
    c10::BFloat16 to) {
  // Reference:
  // https://git.musl-libc.org/cgit/musl/tree/src/math/nextafter.c
  using int_repr_t = uint16_t;
  using float_t = c10::BFloat16;
  constexpr uint8_t bits = 16;
  union {
    float_t f;
    int_repr_t i;
  } ufrom = {from}, uto = {to};

// get a mask to get the sign bit i.e. MSB
  int_repr_t sign_mask = int_repr_t{1} << (bits - 1);

// short-circuit: if either is NaN, return NaN
  if (from != from || to != to) {
    return from + to;
  }

// short-circuit: if they are exactly the same.
  if (ufrom.i == uto.i) {
    return from;
  }

// mask the sign-bit to zero i.e. positive
  // equivalent to abs(x)
  int_repr_t abs_from = ufrom.i & ~sign_mask;
  int_repr_t abs_to = uto.i & ~sign_mask;
  if (abs_from == 0) {
    // if both are zero but with different sign,
    // preserve the sign of `to`.
    if (abs_to == 0) {
      return to;
    }
    // smallest subnormal with sign of `to`.
    ufrom.i = (uto.i & sign_mask) | int_repr_t{1};
    return ufrom.f;
  }

// if abs(from) > abs(to) or sign(from) != sign(to)
  if (abs_from > abs_to || ((ufrom.i ^ uto.i) & sign_mask)) {
    ufrom.i--;
  } else {
    ufrom.i++;
  }

return ufrom.f;
}

} // namespace std

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