avr_math - <math.h>: Mathematics
Macros
#define M_E 2.7182818284590452354
#include <math.h>
This header file declares basic mathematics constants and functions.
Notes:
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In order to access the functions declared herein, it is usually also required to additionally link against the library libm.a. See also the related FAQ entry. |
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Math functions do not raise exceptions and do not change the errno variable. Therefore the majority of them are declared with const attribute, for better optimization by GCC. |
#define M_E 2.7182818284590452354
The constant e.
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