Function is_odd_integer

system/lib/llvm-libc/src/math/generic/powf.cpp:522–531

#endif // LIBC_MATH_HAS_SKIP_ACCURATE_PASS

LIBC_INLINE bool is_odd_integer(float x) {
  using FPBits = typename fputil::FPBits<float>;
  uint32_t x_u = cpp::bit_cast<uint32_t>(x);
  int32_t x_e =
      static_cast<int32_t>((x_u & FPBits::EXP_MASK) >> FPBits::FRACTION_LEN);
  int32_t lsb = cpp::countr_zero(x_u | FPBits::EXP_MASK);
  constexpr int32_t UNIT_EXPONENT =
      FPBits::EXP_BIAS + static_cast<int32_t>(FPBits::FRACTION_LEN);
  return (x_e + lsb == UNIT_EXPONENT);
}

LIBC_INLINE bool is_integer(float x) {
  using FPBits = typename fputil::FPBits<float>;