libc/src/__support/integer_operations.h

   1 //===-- Utils for abs and friends -------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef LLVM_LIBC_SRC_STDLIB_ABS_UTILS_H
  10 #define LLVM_LIBC_SRC_STDLIB_ABS_UTILS_H
  11
  12 #include "src/__support/CPP/type_traits.h"
  13
  14 namespace __llvm_libc {
  15
  16 template <typename T>
  17 static constexpr cpp::enable_if_t<cpp::is_integral_v<T>, T> integer_abs(T n) {
  18   return (n < 0) ? -n : n;
  19 }
  20
  21 template <typename T>
  22 static constexpr cpp::enable_if_t<cpp::is_integral_v<T>, void>
  23 integer_rem_quo(T x, T y, T &quot, T &rem) {
  24   quot = x / y;
  25   rem = x % y;
  26 }
  27
  28 } // namespace __llvm_libc
  29
  30 #endif // LLVM_LIBC_SRC_STDLIB_ABS_UTILS_H