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 an 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.

          For the definitions of various machine-dependent
          ``constants,'' see the description of the <values.h> header
          file.



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     MATH(5)                                                   MATH(5)



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

     ORIGIN
          AT&T V.3


















































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