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Annotation of researchv10dc/man/adm/man3/gamma.3, revision 1.1

1.1     ! root        1: .TH GAMMA 3M
        !             2: .CT 2 math
        !             3: .SH NAME
        !             4: gamma \(mi log gamma function
        !             5: .SH SYNOPSIS
        !             6: .nf
        !             7: .B #include <math.h>
        !             8: .PP
        !             9: .B double gamma(x)
        !            10: .B double x;
        !            11: .PP
        !            12: .B extern int signgam;
        !            13: .fi
        !            14: .SH DESCRIPTION
        !            15: .I Gamma
        !            16: returns
        !            17: ln |\(*G(\|\fIx\fP\|)|.
        !            18: The sign of
        !            19: \(*G(\|\fIx\fP\|)
        !            20: is returned in the external integer
        !            21: .IR signgam .
        !            22: .SH EXAMPLES
        !            23: Computation of the gamma function:
        !            24: .PP
        !            25: .nf
        !            26: .ta 8n +8n
        !            27: .ft L
        !            28:        errno = 0;
        !            29:        y = gamma(x);
        !            30:        if(errno || (y > 88.0))
        !            31:                error();
        !            32:        y = signgam*exp(y);
        !            33: .fi
        !            34: .ft P
        !            35: .SH DIAGNOSTICS
        !            36: A large value
        !            37: .RL ( HUGE )
        !            38: is returned for negative integer arguments
        !            39: and
        !            40: .I errno
        !            41: is set to
        !            42: .BR EDOM .
        !            43: .SH BUGS
        !            44: There should be a positive indication of error.
        !            45: .br
        !            46: The name should indicate the answer is a logarithm,
        !            47: perhaps
        !            48: .IR lgamma .

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