math(5)                                                             math(5)


   NAME
         math - math functions and constants

   SYNOPSIS
         #include <math.h>

   DESCRIPTION
         This file contains declarations of all the functions in the Math
         Library (described in Section 3M), as well as various functions in
         the C Library (Section 3C) that return floating-point values.

         It defines the structure and constants used by the matherr(3M)
         error-handling mechanisms, including the following constant used as a
         error-return value:

         HUGE           The maximum value of a single-precision floating-point
                        number.

         The following mathematical constants are defined for user
         convenience:

         M_E            The base of natural logarithms (e).

         M_LOG2E        The base-2 logarithm of e.

         M_LOG10E       The base-10 logarithm of e.

         M_LN2          The natural logarithm of 2.

         M_LN10         The natural logarithm of 10.

         M_PI           π, the ratio of the circumference of a circle to its
                        diameter.

         M_PI_2         π/2.

         M_PI_4         π/4.

         M_1_PI         1/π.

         M_2_PI         2/π.

         M_2_SQRTPI     2/\/π.

         M_SQRT2        The positive square root of 2.

         M_SQRT1_2      The positive square root of 1/2.

         The following mathematical constants are also defined in this header
         file:



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   math(5)                                                             math(5)


         MAXFLOAT       The maximum value of a non-infinite single-precision
                        floating point number.

         HUGE_VAL       positive infinity.

         For the definitions of various machine-dependent constants, see
         values(5).

   SEE ALSO
         intro(3), matherr(3M), values(5).











































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