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Annotation of researchv10dc/dist/man/v4/man3/ecvt.3, revision 1.1.1.1

1.1       root        1: .th ECVT III 4/30/73
                      2: .sh NAME
                      3: ecvt \*- output conversion
                      4: .sh SYNOPSIS
                      5: .ft B
                      6: jsr    pc,ecvt
                      7: .s3
                      8: jsr    pc,fcvt
                      9: .s3
                     10: char *ecvt(value, ndigit, decpt, sign)
                     11: .br
                     12: double value;
                     13: .br
                     14: int ndigit, *decpt, *sign;
                     15: .s3
                     16: char *fcvt(value, ndigit, decpt, sign)
                     17: .br
                     18: .li
                     19: ...
                     20: .ft R
                     21: .sh DESCRIPTION
                     22: .it Ecvt
                     23: is called with a floating point number in fr0.
                     24: .s3
                     25: On exit, the number has been converted into a
                     26: string of ascii digits in a buffer pointed to by r0.
                     27: The number of digits produced is controlled
                     28: by a global variable \fI\*_ndigits\fR.
                     29: .s3
                     30: Moreover, the position of the decimal point is
                     31: contained in r2: r2=0 means the d.p. is at the
                     32: left hand end of the string of digits;
                     33: r2>0 means the d.p. is within or to the right
                     34: of the string.
                     35: .s3
                     36: The sign of the number is indicated by r1 (0 for +; 1 for \*-).
                     37: .s3
                     38: The low order digit has suffered decimal rounding
                     39: (i. e. may have been carried into).
                     40: .s3
                     41: From C,
                     42: the
                     43: .it value
                     44: is converted and a pointer to a null-terminated
                     45: string of \fIndigit\fR digits is returned.
                     46: The position of the decimal point is stored indirectly
                     47: through \fIdecpt\fR (negative means to the left of the
                     48: returned digits).
                     49: If the sign of the result is negative,
                     50: the word pointed to by \fIsign\fR is non-zero, otherwise
                     51: it is zero.
                     52: .s3
                     53: \fIFcvt\fR is identical to \fIecvt\fR, except that the correct digit
                     54: has had decimal rounding for F-style output of the number
                     55: of digits specified by \fI\(*_ndigits\fR.
                     56: .sh "SEE ALSO"
                     57: printf(III)
                     58: .sh BUGS

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