math(5)                        DG/UX 5.4R3.00                        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:

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




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math(5)                        DG/UX 5.4R3.00                        math(5)


       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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