stdlib.h

Go to the documentation of this file.

//===-- Wrapper for C standard stdlib.h declarations on the GPU -----------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#ifndef __CLANG_LLVM_LIBC_WRAPPERS_STDLIB_H__
#define __CLANG_LLVM_LIBC_WRAPPERS_STDLIB_H__
 
#if !defined(_OPENMP) && !defined(__HIP__) && !defined(__CUDA__)
#error "This file is for GPU offloading compilation only"
#endif
 
#include_next <stdlib.h>
 
#if __has_include(<llvm-libc-decls/stdlib.h>)
 
#if defined(__HIP__) || defined(__CUDA__)
#define __LIBC_ATTRS __attribute__((device))
#endif
 
#pragma omp begin declare target
 
// The LLVM C library uses these named types so we forward declare them.
typedef void (*__atexithandler_t)(void);
typedef int (*__bsearchcompare_t)(const void *, const void *);
typedef int (*__qsortcompare_t)(const void *, const void *);
typedef int (*__qsortrcompare_t)(const void *, const void *, void *);
 
// Enforce ABI compatibility with the structs used by the LLVM C library.
_Static_assert(__builtin_offsetof(div_t, quot) == 0, "ABI mismatch!");
_Static_assert(__builtin_offsetof(ldiv_t, quot) == 0, "ABI mismatch!");
_Static_assert(__builtin_offsetof(lldiv_t, quot) == 0, "ABI mismatch!");
 
#include <llvm-libc-decls/stdlib.h>
 
#pragma omp end declare target
 
#undef __LIBC_ATTRS
 
#endif
 
#endif // __CLANG_LLVM_LIBC_WRAPPERS_STDLIB_H__