clang/lib/Headers/float.h

/*===---- float.h - Characteristics of floating point types ----------------===
 *
 * 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
 *
 *===-----------------------------------------------------------------------===
 */

#if defined(__MVS__) && __has_include_next(<float.h>)
#include <__float_header_macro.h>
#include_next <float.h>
#else

#if !defined(__need_infinity_nan)
#define __need_float_float
#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202311L) ||              \
    !defined(__STRICT_ANSI__)
#define __need_infinity_nan
#endif
#include <__float_header_macro.h>
#endif

#ifdef __need_float_float
/* If we're on MinGW, fall back to the system's float.h, which might have
 * additional definitions provided for Windows.
 * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx
 *
 * Also fall back on AIX to allow additional definitions and
 * implementation-defined values.
 */
#if (defined(__MINGW32__) || defined(_MSC_VER) || defined(_AIX)) &&            \
    __STDC_HOSTED__ && __has_include_next(<float.h>)

#  include_next <float.h>

#endif

#include <__float_float.h>
#undef __need_float_float
#endif

#ifdef __need_infinity_nan
#include <__float_infinity_nan.h>
#undef __need_infinity_nan
#endif

#endif /* __MVS__ */