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[UCRT] Import Microsoft.Windows.SDK.CRTSource version 10.0.22621.3

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Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3
License: MIT
This commit is contained in:
Timo Kreuzer 2024-05-11 07:03:12 +02:00
parent f1b60c66f0
commit 04e0dc4a7a
568 changed files with 115483 additions and 0 deletions
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80
sdk/lib/ucrt/stdlib/lfind.cpp Normal file
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//
// lfind.cpp
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// Defines _lfind(), which performs a linear search over an array.
//
#include <corecrt_internal.h>
#include <search.h>
#ifdef _M_CEE
#define __fileDECL __clrcall
#else
#define __fileDECL __cdecl
#endif
#ifdef __USE_CONTEXT
#define __COMPARE(context, p1, p2) (*compare)(context, p1, p2)
#else
#define __COMPARE(context, p1, p2) (*compare)(p1, p2)
#endif
// Performs a linear search over the array, looking for the value 'key' in an
// array of 'num' elements of 'width' bytes in size. Returns a pointer to the
// matching element if found. Otherwise, returns nullptr.
//
// Parameters:
// * key: The key for which to search
// * base: A pointer to the initial element of the array to be searched
// * num: The number of elements in the array.
// * width: The size of each element, in bytes.
// * comp: Pointer to a function returning analog of strcmp for strings, but
// supplied by the caller for comparing the array elements. It
// accepts two pointers to elements; returns negative if 1 < 2;
// zero if 1 == 2, and positive if 1 > 2.
#ifndef _M_CEE
extern "C"
#endif
#ifdef __USE_CONTEXT
void* __fileDECL _lfind_s(
void const* const key,
void const* const base,
unsigned int* const num,
size_t const width,
int (__fileDECL* const compare)(void*, void const*, void const*),
void* const context
)
#else // __USE_CONTEXT
void* __fileDECL _lfind(
void const* const key,
void const* const base,
unsigned int* const num,
unsigned int const width,
int (__fileDECL* const compare)(void const*, void const*)
)
#endif // __USE_CONTEXT
{
_VALIDATE_RETURN(key != nullptr, EINVAL, nullptr);
_VALIDATE_RETURN(num != nullptr, EINVAL, nullptr);
_VALIDATE_RETURN(base != nullptr || *num == 0, EINVAL, nullptr);
_VALIDATE_RETURN(width > 0, EINVAL, nullptr);
_VALIDATE_RETURN(compare != nullptr, EINVAL, nullptr);
char const* const first = static_cast<char const*>(base);
char const* const last = first + *num * width;
for (char const* p = first; p != last; p += width)
{
if (__COMPARE(context, key, const_cast<char*>(p)) == 0)
{
return const_cast<char*>(p);
}
}
return nullptr;
}
#undef __COMPARE