Files
AnyPS5/core/libs/tests/GuestWideStrings.cpp
T
B-HowellandClaude Opus 4.7 a2b59db71a feat(libc): implement strtoq
Add the BSD "quad" `strtoq` export for the libc PRX as a thin wrapper
around `strtoll`, as FreeBSD 11.4 lib/libc/stdlib/strtoq.c does.  The
unsigned sibling `strtouq` is already here as the same alias of
`strtoull`.  Extend the guest wide strings test to probe the signed
path on an under/overflow run and a short positive run with a trailing
non-digit.  Document the export in docs/dev/debt/libc.md with the
registry NID `yUUOxgk8Dmc`; console behavior is unverified beyond the
existing `strtoll` contract.

Co-Authored-By: Claude Opus 4.7 <[email protected]>
2026-10-26 20:19:37 -04:00

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#include "prx/libc/include/Api.hpp"
#include "prx/libc/include/general/VabiMacros.hpp"
#include <climits>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <initializer_list>
#include <bit>
#include <cmath>
#include <cstdint>
#include <cstring>
#include <string>
namespace {
void require(bool condition) {
if (!condition) std::abort();
}
bool same(const char16_t* left, const char16_t* right, std::size_t count) {
for (std::size_t index = 0; index < count; ++index) {
if (left[index] != right[index]) return false;
}
return true;
}
}
int main() {
{
const auto bytesOf = [](const char* text, std::size_t count) { return std::string(text, count); };
char out[8] = {};
require(c32rtomb_nid_postfix(out, 0x41, nullptr) == 1 && out[0] == 'A');
require(c32rtomb_nid_postfix(out, 0xe9, nullptr) == 2 && bytesOf(out, 2) == "\xc3\xa9");
require(c32rtomb_nid_postfix(out, 0x20ac, nullptr) == 3 && bytesOf(out, 3) == "\xe2\x82\xac");
require(c32rtomb_nid_postfix(out, 0x1f600, nullptr) == 4 && bytesOf(out, 4) == "\xf0\x9f\x98\x80");
require(c32rtomb_nid_postfix(out, 0x7fffffff, nullptr) == 6 && bytesOf(out, 6) == "\xfd\xbf\xbf\xbf\xbf\xbf");
require(c32rtomb_nid_postfix(nullptr, 0x20ac, nullptr) == 1);
alignas(8) unsigned char state[16] = {};
require(c16rtomb_nid_postfix(out, 0xd83d, state) == 0 && state[10] == 1);
require(c16rtomb_nid_postfix(out, 0x41, state) == static_cast<std::size_t>(-1) && state[10] == 1);
require(c16rtomb_nid_postfix(nullptr, 0x41, state) == static_cast<std::size_t>(-1));
require(c16rtomb_nid_postfix(out, 0xde00, state) == 4 && bytesOf(out, 4) == "\xf0\x9f\x98\x80" && state[10] == 0);
require(c16rtomb_nid_postfix(out, 0xdc00, state) == 3 && bytesOf(out, 3) == "\xed\xb0\x80");
require(c16rtomb_nid_postfix(out, 0x7f, state) == 1 && out[0] == 0x7f);
std::memset(state, 0, sizeof(state));
std::uint32_t wide = 0;
require(mbrtoc32_nid_postfix(&wide, "\xf0\x9f\x98\x80z", 5, state) == 4 && wide == 0x1f600);
require(mbrtoc32_nid_postfix(&wide, "\xe2\x82", 2, state) == static_cast<std::size_t>(-2) && state[10] == 1);
require(mbrtoc32_nid_postfix(&wide, "\xac", 1, state) == 1 && wide == 0x20ac && state[10] == 0);
require(mbrtoc32_nid_postfix(&wide, "", 1, state) == 0 && wide == 0);
require(mbrtoc32_nid_postfix(&wide, "A", 0, state) == static_cast<std::size_t>(-2));
wide = 7;
require(mbrtoc32_nid_postfix(&wide, nullptr, 9, state) == 0 && wide == 7);
*__error_nid_postfix() = 0;
require(mbrtoc32_nid_postfix(&wide, "\x80", 1, state) == static_cast<std::size_t>(-1) && *__error_nid_postfix() == 86);
require(mbrtoc32_nid_postfix(&wide, "\xfd\xbf\xbf\xbf\xbf\xbf", 6, state) == 6 && wide == 0x7fffffff);
std::memset(state, 0, sizeof(state));
std::uint16_t unit = 0;
require(mbrtoc16_nid_postfix(&unit, "\xc3\xa9", 2, state) == 2 && unit == 0xe9);
require(mbrtoc16_nid_postfix(&unit, "\xf0\x9f", 2, state) == static_cast<std::size_t>(-2));
require(mbrtoc16_nid_postfix(&unit, "\x98\x80", 2, state) == 2 && unit == 0xd83d && state[10] == 0x10);
require(mbrtoc16_nid_postfix(&unit, "A", 1, state) == static_cast<std::size_t>(-3) && unit == 0xdc1f && state[10] == 0);
std::memset(state, 0, sizeof(state));
require(mbrtoc16_nid_postfix(&unit, "\xf0\x9f\x98\x80", 4, state) == 4 && unit == 0xd83d);
require(mbrtoc16_nid_postfix(&unit, nullptr, 0, state) == static_cast<std::size_t>(-3) && unit == 0xd83d);
*__error_nid_postfix() = 0;
require(mbrtoc16_nid_postfix(&unit, "\xf4\x90\x80\x80", 4, state) == static_cast<std::size_t>(-1) && *__error_nid_postfix() == 86);
require(mblen_nid_postfix(nullptr, 1) == 0 && mblen_nid_postfix("ab", 2) == 1 && mblen_nid_postfix("", 1) == 0);
require(wctomb_nid_postfix(nullptr, 0x41) == 0);
require(wctomb_nid_postfix(out, 0x42) == 1 && out[0] == 'B');
require(wctomb_nid_postfix(out, 0x263a) == 3 && std::memcmp(out, "\xe2\x98\xba", 3) == 0);
}
const char16_t split[] = {u'a', u'b', 0, u'c', 0};
require(wcslen_nid_postfix(u"") == 0);
require(wcslen_nid_postfix(u"héllo") == 5);
require(wcslen_nid_postfix(split) == 2);
require(wcsnlen_s_nid_postfix(nullptr, 10) == 0);
require(wcsnlen_s_nid_postfix(u"", 5) == 0);
require(wcsnlen_s_nid_postfix(u"héllo", 0) == 0);
require(wcsnlen_s_nid_postfix(u"héllo", 3) == 3);
require(wcsnlen_s_nid_postfix(u"héllo", 10) == 5);
require(wcsnlen_s_nid_postfix(split, 4) == 2);
require(wcscmp_nid_postfix(u"abc", u"abc") == 0);
require(wcscmp_nid_postfix(u"abc", u"abd") < 0);
require(wcscmp_nid_postfix(u"abd", u"abc") > 0);
require(wcscmp_nid_postfix(u"ab", u"abc") < 0);
require(wcscmp_nid_postfix(u"￿", u"a") > 0);
require(wcscmp_nid_postfix(u"耀", u"翿") > 0);
require(wcsncmp_nid_postfix(u"abcx", u"abcy", 3) == 0);
require(wcsncmp_nid_postfix(u"abcx", u"abcy", 4) < 0);
require(wcsncmp_nid_postfix(u"ab", u"ab", 10) == 0);
require(wcsncmp_nid_postfix(u"a", u"b", 0) == 0);
char16_t buffer[8];
wmemset_nid_postfix(buffer, 0xaaaa, 8);
require(wcscpy_nid_postfix(buffer, u"wide") == buffer);
require(same(buffer, u"wide", 5) && buffer[5] == 0xaaaa);
char16_t concatenated[8];
wmemset_nid_postfix(concatenated, 0xaaaa, 8);
concatenated[0] = 0;
require(wcscat_nid_postfix(concatenated, u"ab") == concatenated);
require(wcscat_nid_postfix(concatenated, u"世") == concatenated);
const char16_t expectedConcatenated[] = {u'a', u'b', u'世', 0, 0xaaaa};
require(same(concatenated, expectedConcatenated, 5));
wmemset_nid_postfix(buffer, 0xaaaa, 8);
require(wcsncpy_nid_postfix(buffer, u"ab", 5) == buffer);
const char16_t padded[] = {u'a', u'b', 0, 0, 0, 0xaaaa};
require(same(buffer, padded, 6));
wmemset_nid_postfix(buffer, 0xaaaa, 8);
wcsncpy_nid_postfix(buffer, u"abcdef", 3);
const char16_t truncated[] = {u'a', u'b', u'c', 0xaaaa};
require(same(buffer, truncated, 4));
char16_t memBuf[16];
require(wmemcpy_s_nid_postfix(memBuf, 16, u"test", 4) == 0 && same(memBuf, u"test", 4));
require(wmemcpy_s_nid_postfix(memBuf, 16, u"abc", 0) == 0);
require(wmemcpy_s_nid_postfix(nullptr, 16, u"abc", 3) == 22);
require(wmemcpy_s_nid_postfix(memBuf, 16, nullptr, 3) == 22 && memBuf[0] == 0);
wmemset_nid_postfix(memBuf, u'Z', 16);
require(wmemcpy_s_nid_postfix(memBuf, 4, u"12345", 5) == 34 && memBuf[0] == 0 && memBuf[3] == 0);
require(wmemcpy_s_nid_postfix(memBuf, ((SIZE_MAX >> 1) / sizeof(char16_t)) + 1, u"a", 1) == 34);
wmemcpy_s_nid_postfix(memBuf, 16, u"abcdefgh", 8);
require(wmemcpy_s_nid_postfix(memBuf + 2, 8, memBuf, 4) == 22 && memBuf[2] == 0);
wmemcpy_s_nid_postfix(memBuf, 16, u"0123456789", 10);
require(wmemmove_s_nid_postfix(memBuf + 2, 10, memBuf, 5) == 0);
require(same(memBuf, u"0101234789", 10));
require(wmemmove_s_nid_postfix(memBuf, 10, memBuf + 2, 5) == 0);
require(same(memBuf, u"0123434789", 10));
require(wmemmove_s_nid_postfix(nullptr, 16, memBuf, 3) == 22);
require(wmemmove_s_nid_postfix(memBuf, 16, nullptr, 3) == 22 && memBuf[0] == 0);
require(wmemmove_s_nid_postfix(memBuf, 4, u"12345", 5) == 34 && memBuf[0] == 0);
require(wmemmove_s_nid_postfix(memBuf, ((SIZE_MAX >> 1) / sizeof(char16_t)) + 1, u"a", 1) == 34);
char16_t strBuf[16];
require(wcsncpy_s_nid_postfix(strBuf, 16, u"hello", 5) == 0 && same(strBuf, u"hello", 6));
require(wcsncpy_s_nid_postfix(strBuf, 16, u"hello world", 5) == 0 && same(strBuf, u"hello", 6));
require(wcsncpy_s_nid_postfix(strBuf, 16, u"hi", 10) == 0 && same(strBuf, u"hi", 3));
require(wcsncpy_s_nid_postfix(nullptr, 16, u"hi", 2) == 22);
require(wcsncpy_s_nid_postfix(strBuf, 0, u"hi", 2) == 22);
strBuf[0] = u'X';
require(wcsncpy_s_nid_postfix(strBuf, 16, nullptr, 2) == 22 && strBuf[0] == 0);
strBuf[0] = u'X';
require(wcsncpy_s_nid_postfix(strBuf, 4, u"hello", 5) == 34 && strBuf[0] == 0);
strBuf[0] = u'X';
require(wcsncpy_s_nid_postfix(strBuf, 5, u"hello", 5) == 34 && strBuf[0] == 0);
require(wcsncpy_s_nid_postfix(strBuf, ((SIZE_MAX >> 1) / sizeof(char16_t)) + 1, u"a", 1) == 34);
wcsncpy_s_nid_postfix(strBuf, 16, u"abcdef", 6);
require(wcsncpy_s_nid_postfix(strBuf + 1, 10, strBuf, 3) == 22 && strBuf[1] == 0);
char16_t cpyBuf[16];
require(wcscpy_s_nid_postfix(reinterpret_cast<std::uint16_t*>(cpyBuf), 16, reinterpret_cast<const std::uint16_t*>(u"wide")) == 0 && same(cpyBuf, u"wide", 5));
void* previousHandler = set_constraint_handler_s_nid_postfix(reinterpret_cast<void*>(&ignore_handler_s_nid_postfix));
require(wcscpy_s_nid_postfix(nullptr, 16, reinterpret_cast<const std::uint16_t*>(u"wide")) == 22);
require(wcscpy_s_nid_postfix(reinterpret_cast<std::uint16_t*>(cpyBuf), 0, reinterpret_cast<const std::uint16_t*>(u"wide")) == 22);
require(wcscpy_s_nid_postfix(reinterpret_cast<std::uint16_t*>(cpyBuf), 16, nullptr) == 22 && cpyBuf[0] == 0);
require(wcscpy_s_nid_postfix(reinterpret_cast<std::uint16_t*>(cpyBuf), 4, reinterpret_cast<const std::uint16_t*>(u"wide")) == 34 && cpyBuf[0] == 0);
cpyBuf[0] = 0x1234;
require(wcscpy_s_nid_postfix(reinterpret_cast<std::uint16_t*>(cpyBuf), ((SIZE_MAX >> 1) / sizeof(char16_t)) + 1, reinterpret_cast<const std::uint16_t*>(u"a")) == 34 && cpyBuf[0] == 0x1234);
wcscpy_s_nid_postfix(reinterpret_cast<std::uint16_t*>(cpyBuf), 16, reinterpret_cast<const std::uint16_t*>(u"abcdef"));
require(wcscpy_s_nid_postfix(reinterpret_cast<std::uint16_t*>(cpyBuf + 1), 10, reinterpret_cast<const std::uint16_t*>(cpyBuf)) == 22 && cpyBuf[1] == 0);
set_constraint_handler_s_nid_postfix(previousHandler);
char16_t ncatBuf[16];
wmemset_nid_postfix(ncatBuf, 0xaaaa, 16);
ncatBuf[0] = 0;
require(wcsncat_nid_postfix(ncatBuf, u"hello", 3) == ncatBuf);
require(same(ncatBuf, u"hel", 4) && ncatBuf[4] == 0xaaaa);
require(wcsncat_nid_postfix(ncatBuf, u"lo world", 10) == ncatBuf);
require(same(ncatBuf, u"hello world", 12) && ncatBuf[12] == 0xaaaa);
wcsncpy_s_nid_postfix(strBuf, 16, u"hello", 5);
require(wcsncat_s_nid_postfix(strBuf, 16, u" world", 6) == 0 && same(strBuf, u"hello world", 12));
wcsncpy_s_nid_postfix(strBuf, 16, u"foo", 3);
require(wcsncat_s_nid_postfix(strBuf, 16, u"barbaz", 3) == 0 && same(strBuf, u"foobar", 7));
wcsncpy_s_nid_postfix(strBuf, 8, u"abc", 3);
require(wcsncat_s_nid_postfix(strBuf, 8, u"1234", 4) == 0 && same(strBuf, u"abc1234", 8));
wcsncpy_s_nid_postfix(strBuf, 8, u"abc", 3);
require(wcsncat_s_nid_postfix(strBuf, 8, u"12345", 5) == 34 && strBuf[0] == 0);
wmemset_nid_postfix(strBuf, u'x', 4);
require(wcsncat_s_nid_postfix(strBuf, 4, u"a", 1) == 34 && strBuf[0] == 0);
wcsncpy_s_nid_postfix(strBuf, 16, u"abc", 3);
require(wcsncat_s_nid_postfix(strBuf, 16, strBuf + 1, 2) == 0 && same(strBuf, u"abcbc", 6));
const char16_t splitSource[] = u"abc\0xyz";
std::memcpy(strBuf, splitSource, sizeof(splitSource));
require(wcsncat_s_nid_postfix(strBuf, 16, strBuf + 4, 3) == 22 && strBuf[0] == 0);
wcsncpy_s_nid_postfix(strBuf, 16, u"abc", 3);
require(wcscat_s_nid_postfix(strBuf, 16, u"def") == 0 && same(strBuf, u"abcdef", 7));
wcsncpy_s_nid_postfix(strBuf, 8, u"12345", 5);
require(wcscat_s_nid_postfix(strBuf, 8, u"6789") == 34 && strBuf[0] == 0);
require(wcscat_s_nid_postfix(nullptr, 8, u"a") == 22);
wcsncpy_s_nid_postfix(strBuf, 8, u"123", 3);
require(wcscat_s_nid_postfix(strBuf, 8, nullptr) == 22 && strBuf[0] == 0);
const char16_t* text = u"a世b世c";
require(wcschr_nid_postfix(text, u'世') == text + 1);
require(wcsrchr_nid_postfix(text, u'世') == text + 3);
require(wcschr_nid_postfix(text, u'z') == nullptr);
require(wcsrchr_nid_postfix(text, u'z') == nullptr);
require(wcschr_nid_postfix(text, 0) == text + 5);
require(wcsrchr_nid_postfix(text, 0) == text + 5);
const char16_t* haystack = u"one two two";
require(wcsstr_nid_postfix(haystack, u"two") == haystack + 4);
require(wcsstr_nid_postfix(haystack, u"") == haystack);
require(wcsstr_nid_postfix(haystack, u"three") == nullptr);
require(wcsstr_nid_postfix(u"tw", u"two") == nullptr);
require(wcspbrk_nid_postfix(haystack, u"wt") == haystack + 4);
require(wcspbrk_nid_postfix(haystack, u"xyz") == nullptr);
require(wcsspn_nid_postfix(u"aabbc", u"ab") == 4);
require(wcsspn_nid_postfix(u"abc", u"") == 0);
require(wcscspn_nid_postfix(u"abcde", u"dx") == 3 && wcscspn_nid_postfix(u"abc", u"") == 3 && wcscspn_nid_postfix(u"", u"a") == 0 && wcscspn_nid_postfix(u"abc", u"a") == 0);
char16_t tokens[] = u",,one,,two;three,";
char16_t* last = tokens;
char16_t* token = wcstok_nid_postfix(tokens, u",", &last);
require(token == tokens + 2 && same(token, u"one", 4) && last == tokens + 6);
token = wcstok_nid_postfix(nullptr, u",;", &last);
require(token == tokens + 7 && same(token, u"two", 4) && last == tokens + 11);
token = wcstok_nid_postfix(nullptr, u",", &last);
require(token == tokens + 11 && same(token, u"three", 6) && last == tokens + 17);
require(wcstok_nid_postfix(nullptr, u",", &last) == nullptr && last == nullptr);
require(wcstok_nid_postfix(nullptr, u",", &last) == nullptr && last == nullptr);
char16_t tail[] = u"a b";
require(wcstok_nid_postfix(tail, u" ", &last) == tail && last == tail + 2);
require(wcstok_nid_postfix(nullptr, u" ", &last) == tail + 2 && same(tail, u"a\0b", 4) && last == nullptr);
char16_t onlyDelimiters[] = u";;";
last = onlyDelimiters;
require(wcstok_nid_postfix(onlyDelimiters, u";", &last) == nullptr && last == nullptr && same(onlyDelimiters, u";;", 3));
char16_t empty[] = u"";
last = empty;
require(wcstok_nid_postfix(empty, u";", &last) == nullptr && last == nullptr);
char16_t whole[] = u"word";
require(wcstok_nid_postfix(whole, u"", &last) == whole && last == nullptr && same(whole, u"word", 5));
char16_t wide[] = u"\u4e00\u3001\xd83d\xde00\u3001";
require(wcstok_nid_postfix(wide, u"\u3001", &last) == wide && same(wide, u"\u4e00\0", 2) && last == wide + 2);
require(wcstok_nid_postfix(nullptr, u"\u3001", &last) == wide + 2 && wide[2] == 0xd83d && wide[3] == 0xde00 && wide[4] == 0 && last == wide + 5);
require(wcstok_nid_postfix(nullptr, u"\u3001", &last) == nullptr && last == nullptr);
const char16_t units[] = {u'x', 0, u'￿', u'y'};
require(wmemchr_nid_postfix(units, u'￿', 4) == units + 2);
require(wmemchr_nid_postfix(units, u'y', 3) == nullptr);
const char16_t lower[] = {u'x', 0, u'\u0001', u'y'};
require(wmemcmp_nid_postfix(units, units, 4) == 0);
require(wmemcmp_nid_postfix(units, lower, 4) > 0);
require(wmemcmp_nid_postfix(lower, units, 4) < 0);
require(wmemcmp_nid_postfix(units, lower, 2) == 0);
char16_t copy[4] = {};
require(wmemcpy_nid_postfix(copy, units, 4) == copy && same(copy, units, 4));
char16_t overlap[] = {u'1', u'2', u'3', u'4', u'5'};
require(wmemmove_nid_postfix(overlap + 1, overlap, 4) == overlap + 1);
const char16_t shifted[] = {u'1', u'1', u'2', u'3', u'4'};
require(same(overlap, shifted, 5));
require(wmemset_nid_postfix(copy, u'世', 3) == copy && copy[0] == u'世' && copy[2] == u'世' && copy[3] == u'y');
char16_t* end = nullptr;
const char16_t* negative = u" -42xyz";
require(wcstol_nid_postfix(negative, &end, 10) == -42 && end == negative + 5);
const char16_t* hex = u"0x1F!";
require(wcstoll_nid_postfix(hex, &end, 16) == 31 && end == hex + 4);
require(wcstoll_nid_postfix(hex, &end, 0) == 31 && end == hex + 4);
const char16_t* wideSpace = u" 12";
require(wcstoul_nid_postfix(wideSpace, &end, 10) == 0 && end == wideSpace);
const char16_t* wideDigit = u"12١";
require(wcstoll_nid_postfix(wideDigit, &end, 10) == 12 && end == wideDigit + 2);
require(wcstoull_nid_postfix(u"18446744073709551615", nullptr, 10) == ULLONG_MAX);
const char16_t* letters = u"abc";
require(wcstol_nid_postfix(letters, &end, 10) == 0 && end == letters);
const char16_t* binary = u" -0b101";
for (const int base : {0, 2}) {
require(wcstol_nid_postfix(binary, &end, base) == 0 && end == binary + 3);
require(wcstoll_nid_postfix(binary, &end, base) == 0 && end == binary + 3);
require(wcstoul_nid_postfix(binary, &end, base) == 0 && end == binary + 3);
require(wcstoull_nid_postfix(binary, &end, base) == 0 && end == binary + 3);
}
require(wcstoll_nid_postfix(binary + 2, &end, 16) == 0xb101 && end == binary + 7);
struct SignedCase {
const char16_t* text;
int base;
long long value;
std::ptrdiff_t consumed;
int error;
};
for (const SignedCase& item : {SignedCase{u"- 1", 10, -1, 3, 0}, SignedCase{u"+\t-1", 10, LLONG_MAX, 4, 34}, SignedCase{u" - -1", 10, LLONG_MIN, 5, 34},
SignedCase{u"-18446744073709551615", 10, LLONG_MIN, 21, 34}, SignedCase{u"-9223372036854775808", 10, LLONG_MIN, 20, 0},
SignedCase{u"-9223372036854775809", 10, LLONG_MIN, 20, 34}, SignedCase{u"+-9223372036854775808", 10, LLONG_MAX, 21, 34}, SignedCase{u" -0x", 16, 0, 0, 0},
SignedCase{u"- ", 10, 0, 0, 0}}) {
for (auto* parse : {wcstol_nid_postfix, wcstoll_nid_postfix, wcstoimax_nid_postfix}) {
*__error_nid_postfix() = 0;
require(parse(item.text, &end, item.base) == item.value && end - item.text == item.consumed && *__error_nid_postfix() == item.error);
}
}
const char16_t* scientific = u"3.5e2!";
require(wcstod_nid_postfix(scientific, &end) == 350.0 && end == scientific + 5);
require(wcstod_nid_postfix(letters, &end) == 0.0 && end == letters);
require(wcstof_nid_postfix(u"0.25", nullptr) == 0.25f);
const char16_t* sign = u" -x";
require(std::signbit(wcstof_nid_postfix(sign, &end)) && end == sign && std::signbit(wcstold_nid_postfix(sign, &end)) && !std::signbit(wcstod_nid_postfix(sign, &end)));
*__error_nid_postfix() = 0;
require(wcstof_nid_postfix(u"0x1p+200", nullptr) == HUGE_VALF && *__error_nid_postfix() == ERANGE);
*__error_nid_postfix() = 0;
require(wcstof_nid_postfix(u"1e-45", nullptr) == 0x1p-149f && *__error_nid_postfix() == ERANGE);
*__error_nid_postfix() = 0;
require(wcstof_nid_postfix(u"0x1p-149", nullptr) == 0x1p-149f && *__error_nid_postfix() == 0);
require(wcstof_nid_postfix(u"0x1.8p-150", nullptr) == 0x1p-149f && *__error_nid_postfix() == ERANGE);
const char16_t* loneSign = u" -";
const float loneSignValue = wcstof_nid_postfix(loneSign, &end);
require(loneSignValue == 0.f && !std::signbit(loneSignValue) && end == loneSign && std::signbit(wcstold_nid_postfix(loneSign, &end)));
const char16_t* half = u"-1.5é";
require(wcstold_nid_postfix(half, &end) == -1.5L && end == half + 4);
const char16_t* wideNan = u" -nan(0x123)é";
require(std::bit_cast<std::uint64_t>(wcstod_nid_postfix(wideNan, &end)) == 0xfff8000000000123u && end == wideNan + 12);
require(std::bit_cast<std::uint32_t>(wcstof_nid_postfix(wideNan, &end)) == 0xffc00000u && end == wideNan + 12);
const long double wideExtended = wcstold_nid_postfix(wideNan, &end);
std::uint64_t significand;
std::memcpy(&significand, &wideExtended, sizeof(significand));
require(std::isnan(wideExtended) && !std::signbit(wideExtended) && significand == 0xc000000000000000u && end == wideNan + 12);
require(wcscoll_nid_postfix(u"a", u"b") < 0);
require(wcscoll_nid_postfix(u"￿", u"a") > 0);
require(wcscoll_nid_postfix(u"same", u"same") == 0);
char16_t transformed[8];
wmemset_nid_postfix(transformed, 0xaaaa, 8);
require(wcsxfrm_nid_postfix(transformed, u"wide", 8) == 4 && same(transformed, u"wide", 5) && transformed[5] == 0xaaaa);
wmemset_nid_postfix(transformed, 0xaaaa, 8);
require(wcsxfrm_nid_postfix(transformed, u"much too long", 4) == 13);
if (!same(transformed, u"muc", 4)) std::fputs("wcsxfrm did not copy and terminate its truncated result\n", stderr);
require(same(transformed, u"muc", 4) && transformed[4] == 0xaaaa);
require(wcsxfrm_nid_postfix(nullptr, u"abc", 0) == 3);
struct TransformCase {
const char16_t* source;
std::size_t count;
std::size_t length;
const char16_t* expected;
std::size_t written;
};
for (const TransformCase test : {
TransformCase{u"wide", 0, 4, u"", 0},
TransformCase{u"wide", 1, 4, u"", 1},
TransformCase{u"wide", 4, 4, u"wid", 4},
TransformCase{u"wide", 5, 4, u"wide", 5},
TransformCase{u"", 0, 0, u"", 0},
TransformCase{u"", 1, 0, u"", 1},
TransformCase{u"", 8, 0, u"", 1},
TransformCase{u"\x7fff\x8000\xffff\xd83d\xde00", 4, 5, u"\x7fff\x8000\xffff", 4},
TransformCase{u"\x7fff\x8000\xffff\xd83d\xde00", 6, 5, u"\x7fff\x8000\xffff\xd83d\xde00", 6}
}) {
wmemset_nid_postfix(transformed, 0xaaaa, 8);
require(wcsxfrm_nid_postfix(transformed, test.source, test.count) == test.length);
require(same(transformed, test.expected, test.written));
for (std::size_t index = test.written; index < 8; ++index) require(transformed[index] == 0xaaaa);
}
{
const char16_t number[] = u" -0x7fffffffffffffff9";
char16_t* wideEnd = nullptr;
require(wcstoimax_nid_postfix(number, &wideEnd, 0) == INT64_MIN && wideEnd == number + 22);
const char16_t positive[] = u"+42z";
require(wcstoumax_nid_postfix(positive, &wideEnd, 10) == 42 && wideEnd == positive + 3);
require(wcstoumax_nid_postfix(u"-1", nullptr, 10) == UINT64_MAX);
char* narrowEnd = nullptr;
const char text[] = "0x1ffffffffffffffffg";
require(strtouq_nid_postfix(text, &narrowEnd, 16) == UINT64_MAX && narrowEnd == text + 19);
const char signedText[] = " -0x7fffffffffffffff9";
require(strtoq_nid_postfix(signedText, &narrowEnd, 0) == INT64_MIN && narrowEnd == signedText + 22);
const char positiveText[] = "+42z";
require(strtoq_nid_postfix(positiveText, &narrowEnd, 10) == 42 && narrowEnd == positiveText + 3);
const char path[] = "a/b/c";
require(rindex_nid_postfix(path, '/') == path + 3 && rindex_nid_postfix(path, 'x') == nullptr);
require(rindex_nid_postfix(path, 0) == path + 5);
require(flsl_nid_postfix(0) == 0 && flsl_nid_postfix(1) == 1 && flsl_nid_postfix(0x80) == 8);
require(flsl_nid_postfix(0x100000000ll) == 33 && flsl_nid_postfix(INT64_MIN) == 64 && flsl_nid_postfix(-1) == 64);
}
return 0;
}