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//@HEADER
// ************************************************************************
//
// Kokkos v. 4.0
// Copyright (2022) National Technology & Engineering
// Solutions of Sandia, LLC (NTESS).
//
// Under the terms of Contract DE-NA0003525 with NTESS,
// the U.S. Government retains certain rights in this software.
//
// Part of Kokkos, under the Apache License v2.0 with LLVM Exceptions.
// See https://kokkos.org/LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//@HEADER
#include <impl/Kokkos_StringManipulation.hpp>
#include <climits>
namespace {
KOKKOS_FUNCTION constexpr bool test_strlen() {
using Kokkos::Impl::strlen;
constexpr char str[] = "How many characters does this string contain?";
static_assert(strlen(str) == 45); // without null character
static_assert(sizeof str == 46); // with null character
static_assert(strlen("") == 0);
return true;
}
static_assert(test_strlen());
KOKKOS_FUNCTION constexpr bool test_strcmp() {
using Kokkos::Impl::strcmp;
constexpr char cat1[] = "Heathcliff";
constexpr char cat2[] = "Snagglepuss";
constexpr char cat3[] = "Hobbes";
constexpr char cat4[] = "Garfield";
static_assert(strcmp(cat1, cat1) == 0);
#if (!defined(KOKKOS_COMPILER_NVCC) || \
((__CUDACC_VER_MAJOR__ >= 11) && (__CUDACC_VER_MINOR__ >= 3)))
static_assert(strcmp(cat1, cat2) < 0);
static_assert(strcmp(cat1, cat3) < 0);
#endif
static_assert(strcmp(cat1, cat4) > 0);
static_assert(strcmp(cat2, cat2) == 0);
static_assert(strcmp(cat2, cat3) > 0);
static_assert(strcmp(cat2, cat4) > 0);
static_assert(strcmp(cat3, cat3) == 0);
static_assert(strcmp(cat3, cat4) > 0);
static_assert(strcmp(cat4, cat4) == 0);
return true;
}
static_assert(test_strcmp());
KOKKOS_FUNCTION constexpr bool test_strncmp() {
using Kokkos::Impl::strncmp;
constexpr char greet1[] = "Hello, world!";
constexpr char greet2[] = "Hello, everybody!";
constexpr char greet3[] = "Hello, somebody!";
static_assert(strncmp(greet1, greet2, 13) > 0);
static_assert(strncmp(greet2, greet1, 13) < 0);
static_assert(strncmp(greet2, greet1, 7) == 0);
static_assert(strncmp(greet2 + 12, greet3 + 11, 5) == 0);
static_assert(strncmp(greet1, greet2, 0) == 0);
return true;
}
static_assert(test_strncmp());
KOKKOS_FUNCTION constexpr bool strcpy_helper(const char* dest, const char* src,
const char* ref) {
using Kokkos::Impl::strcmp;
using Kokkos::Impl::strcpy;
char buffer[50] = {};
strcpy(buffer, dest);
strcpy(buffer, src);
return strcmp(buffer, ref) == 0;
}
KOKKOS_FUNCTION constexpr bool test_strcpy() {
static_assert(strcpy_helper("abcdef", "hi", "hi\0\0\0f"));
return true;
}
static_assert(test_strcpy());
KOKKOS_FUNCTION constexpr bool strncpy_helper(const char* dest, const char* src,
std::size_t count,
const char* ref) {
using Kokkos::Impl::strcmp;
using Kokkos::Impl::strlen;
using Kokkos::Impl::strncpy;
char buffer[50] = {};
strncpy(buffer, dest, strlen(dest));
strncpy(buffer, src, count);
return strcmp(buffer, ref) == 0;
}
KOKKOS_FUNCTION constexpr bool test_strncpy() {
static_assert(strncpy_helper("abcdef", "hi", 5, "hi\0\0\0f"));
static_assert(strncpy_helper("abcdef", "hi", 0, "abcdef"));
return true;
}
static_assert(test_strncpy());
KOKKOS_FUNCTION constexpr bool strcat_helper(const char* dest, const char* src,
const char* ref) {
using Kokkos::Impl::strcat;
using Kokkos::Impl::strcmp;
char buffer[50] = {};
strcat(buffer, dest);
strcat(buffer, src);
return strcmp(buffer, ref) == 0;
}
KOKKOS_FUNCTION constexpr bool test_strcat() {
static_assert(strcat_helper("Hello ", "World!", "Hello World!"));
static_assert(strcat_helper("Hello World!", " Goodbye World!",
"Hello World! Goodbye World!"));
return true;
}
static_assert(test_strcat());
KOKKOS_FUNCTION constexpr bool strncat_helper(const char* dest, const char* src,
std::size_t count,
const char* ref) {
using Kokkos::Impl::strcmp;
using Kokkos::Impl::strlen;
using Kokkos::Impl::strncat;
char buffer[50] = {};
strncat(buffer, dest, strlen(dest));
strncat(buffer, src, count);
return strcmp(buffer, ref) == 0;
}
KOKKOS_FUNCTION constexpr bool test_strncat() {
static_assert(
strncat_helper("Hello World!", " Goodbye World!", 3, "Hello World! Go"));
static_assert(
strncat_helper("Hello World!", " Goodbye World!", 0, "Hello World!"));
return true;
}
static_assert(test_strncat());
template <class Integral>
KOKKOS_FUNCTION constexpr bool to_chars_helper(Integral val, char const* ref) {
using Kokkos::Impl::strcmp;
using Kokkos::Impl::strlen;
using Kokkos::Impl::to_chars_i;
constexpr int BUFFER_SIZE = 21;
char buffer[BUFFER_SIZE] = {};
return (buffer + strlen(ref) ==
to_chars_i(buffer, buffer + BUFFER_SIZE, val).ptr) &&
(strcmp(buffer, ref) == 0);
}
KOKKOS_FUNCTION constexpr bool test_to_chars() {
static_assert(to_chars_helper(0, "0"));
static_assert(to_chars_helper(123, "123"));
static_assert(to_chars_helper(-456, "-456"));
static_assert(to_chars_helper(INT_MAX, "2147483647"));
static_assert(to_chars_helper(INT_MIN, "-2147483648"));
static_assert(to_chars_helper(0u, "0"));
static_assert(to_chars_helper(78u, "78"));
static_assert(to_chars_helper(UINT_MAX, "4294967295"));
static_assert(to_chars_helper(0ll, "0"));
static_assert(to_chars_helper(LLONG_MAX, "9223372036854775807"));
static_assert(to_chars_helper(LLONG_MIN, "-9223372036854775808"));
static_assert(to_chars_helper(0ull, "0"));
static_assert(to_chars_helper(ULLONG_MAX, "18446744073709551615"));
return true;
}
static_assert(test_to_chars());
} // namespace
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