ultrix man page for math

math(5) 							File Formats Manual							   math(5)

Name
       math - math functions and constants

Syntax
       #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 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	      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.

       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.

See Also
       intro(3), values(5)

								       RISC								   math(5)