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Annotation of researchv10dc/man/man3/frexp.3, revision 1.1

1.1     ! root        1: .TH FREXP 3
        !             2: .CT 2 math data_man
        !             3: .SH NAME
        !             4: frexp, ldexp, modf \(mi split into mantissa and exponent
        !             5: .SH SYNOPSIS
        !             6: .B #include <math.h>
        !             7: .PP
        !             8: .nf
        !             9: .B double frexp(value, eptr)
        !            10: .B double value;
        !            11: .B int *eptr;
        !            12: .PP
        !            13: .B double ldexp(value, exp)
        !            14: .B double value;
        !            15: .PP
        !            16: .B double modf(value, iptr)
        !            17: .B double value, *iptr;
        !            18: .SH DESCRIPTION
        !            19: .I Frexp
        !            20: returns the mantissa of
        !            21: .I value
        !            22: and stores the exponent indirectly through
        !            23: .I eptr.
        !            24: If
        !            25: .RI 1/2\(<= |X| <1,
        !            26: then
        !            27: .if t .IR x " = " frexp ( x\(mu2\u\s-2*eptr\s0\d,\ eptr ).
        !            28: .if n  x = frexp(x*2^*eptr, eptr).
        !            29: .PP
        !            30: .I Ldexp
        !            31: returns the quantity
        !            32: .if t .IR value \(mu2\u\s-2 exp \s0\d.
        !            33: .if n .IR value *2** exp.
        !            34: .PP
        !            35: .I Modf
        !            36: returns the positive fractional part of
        !            37: .I value
        !            38: and stores the integer part indirectly
        !            39: through
        !            40: .I iptr.
        !            41: .SH DIAGNOSTICS
        !            42: On underflow
        !            43: .I ldexp
        !            44: returns 0; on
        !            45: overflow it returns a properly signed largest value.
        !            46: In both cases it sets
        !            47: .I errno
        !            48: to
        !            49: .BR ERANGE .

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