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           n, the ratio of the circumference of a circle
                            to its diameter.

             M_PI_2         n/2.

             M_PI_4         n/4.

             M_1_PI         1/n.

             M_2_PI         2/n.

             M_2_SQRTPI     2/\/n.




                           Copyright 1994 Novell, Inc.               Page 1

      math(5)                                                      math(5)


            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:

            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).

      REFERENCES
            intro(3), matherr(3M), values(5)































                          Copyright 1994 Novell, Inc.               Page 2