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+.\"#ident	"@(#)ccsman:g5/math	1.2"
+'\"macro stdmacro
+.ie n \{\
+.ds pI \fIpi\fP
+.ds sR \fIsquare root of\fP\}
+.el \{\
+.ds pI \(*p
+.ds sR \(sr\}
+.nr X
+.if \nX=0 .ds x} MATH 5 "630 MTG"  "\&"
+.TH \*(x}
+.SH NAME
+math \- math functions and constants
+.SH SYNOPSIS
+.B #include <ccs/math.h>
+.SH DESCRIPTION
+This file contains declarations of all the functions in the
+Math Library (described in Section 3M),
+as well as various other functions
+that return floating-point values.
+.P
+It defines the structure and constants used by the
+.IR matherr (3M)
+error-handling mechanisms, including
+the following constant used as an
+error-return value:
+.P
+.TP 20
+.SM
+HUGE
+The maximum value of a single-precision floating-point number.
+.P
+The following mathematical constants are defined for user convenience:
+.P
+.TP 20
+.SM
+M_E
+The base of natural logarithms
+.RI ( e ).
+.TP 20
+.SM
+M_LOG2E
+The base-2 logarithm of
+.IR e .
+.TP 20
+.SM
+M_LOG10E
+The base-10 logarithm of
+.IR e .
+.TP 20
+.SM
+M_LN2
+The natural logarithm of 2.
+.TP 20
+.SM
+M_LN10
+The natural logarithm of 10.
+.TP 20
+.SM
+M_PI
+\*(pI, the ratio of the circumference of a circle to its diameter.
+.TP 20 
+.SM
+M_PI_2
+\*(pI/2.
+.TP 20
+.SM
+M_PI_4
+\*(pI/4.
+.TP 20
+.SM
+M_1_PI
+1/\*(pI.
+.TP 20
+.SM
+M_2_PI
+2/\*(pI.
+.TP 20
+.SM
+M_2_SQRTPI
+.EQ
+2 over sqrt pi
+.EN
+.TP 20
+.SM
+M_SQRT2
+.EQ
+sqrt 2
+.EN
+.TP 20
+.SM
+M_SQRT1_2
+.EQ
+sqrt {1 over 2}
+.EN
+.P
+For the definitions of various machine-dependent ``constants,''
+see \f2values(5)\f1.
+.SH FILES
+$DMD/include/ccs/math.h
+.SH "SEE ALSO"
+matherr(3M),
+values(5).
+.Ee