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lib/libc/min: Introduce simple math.h

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Introduce math.h to get definitions of float_t and double_t.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
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Kumar Gala 2019-09-26 08:28:21 -05:00 • committed by Kumar Gala
commit 4cbe5c0961
1 changed files with 41 additions and 0 deletions
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lib/libc/minimal/include/math.h Normal file
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/*
* Copyright (c) 2019 Linaro Limited.
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_LIB_LIBC_MINIMAL_INCLUDE_MATH_H_
#define ZEPHYR_LIB_LIBC_MINIMAL_INCLUDE_MATH_H_
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(FLT_EVAL_METHOD) && defined(__FLT_EVAL_METHOD__)
#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
#endif
#if defined FLT_EVAL_METHOD
#if FLT_EVAL_METHOD == 0
typedef float float_t;
typedef double double_t;
#elif FLT_EVAL_METHOD == 1
typedef double float_t;
typedef double double_t;
#elif FLT_EVAL_METHOD == 2
typedef long double float_t;
typedef long double double_t;
#else
/* Implementation-defined. Assume float_t and double_t have
* already been defined */
#endif
#else
typedef float float_t;
typedef double double_t;
#endif
#ifdef __cplusplus
}
#endif
#endif /* ZEPHYR_LIB_LIBC_MINIMAL_INCLUDE_MATH_H_ */