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Annotation of researchv10dc/man/man3/ecvt.3, revision 1.1.1.1

1.1       root        1: .TH ECVT 3
                      2: .CT 2 data_man
                      3: .SH NAME
                      4: ecvt, fcvt, gcvt \- convert numbers to ascii
                      5: .SH SYNOPSIS
                      6: .nf
                      7: .B char *ecvt(value, ndigit, decpt, sign)
                      8: .B double value;
                      9: .B int ndigit, *decpt, *sign;
                     10: .PP
                     11: .B char *fcvt(value, ndigit, decpt, sign)
                     12: .B double value;
                     13: .B int ndigit, *decpt, *sign;
                     14: .PP
                     15: .B char *gcvt(value, ndigit, buf)
                     16: .B double value;
                     17: .B char *buf;
                     18: .fi
                     19: .SH DESCRIPTION
                     20: .I Ecvt
                     21: converts the
                     22: .I value
                     23: to a null-terminated string of
                     24: .I ndigit
                     25: ASCII digits
                     26: and returns a pointer thereto.
                     27: The position of the decimal point relative to the
                     28: beginning of the string is stored indirectly
                     29: through
                     30: .IR decpt ""
                     31: (negative means to the left of the
                     32: returned digits).
                     33: If the sign of the result is negative,
                     34: the word pointed to by
                     35: .IR sign ""
                     36: is non-zero, otherwise
                     37: it is zero.
                     38: The low-order digit is rounded.
                     39: .PP
                     40: .I Fcvt
                     41: is similar to
                     42: .I ecvt
                     43: and produces output for the Fortran format
                     44: .BI F*. ndigit .
                     45: If
                     46: .IR decpt \(<=\- ndigit ,
                     47: then the returned string is null.
                     48: Otherwise,
                     49: .IR decpt + ndigit +1
                     50: characters (including terminating null) are returned.
                     51: .PP
                     52: .I Gcvt
                     53: converts the
                     54: .I value
                     55: to a null-terminated ASCII string in
                     56: .I buf
                     57: and returns a pointer to
                     58: .I buf.
                     59: It attempts to produce
                     60: .I ndigit
                     61: significant digits in Fortran F format if
                     62: possible, otherwise E format, ready for
                     63: printing.
                     64: Trailing zeros may be suppressed.
                     65: .SH "SEE ALSO"
                     66: .IR printf (3)
                     67: .SH BUGS
                     68: The return values point to static data
                     69: whose content is overwritten by each call.

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