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- .th ECVT III 4/30/73
- .sh NAME
- ecvt, fcvt \*- output conversion
- .sh SYNOPSIS
- .ft B
- jsr pc,ecvt
- .s3
- jsr pc,fcvt
- .s3
- char *ecvt(value, ndigit, decpt, sign)
- .br
- double value;
- .br
- int ndigit, *decpt, *sign;
- .s3
- char *fcvt(value, ndigit, decpt, sign)
- .br
- .li
- ...
- .ft R
- .sh DESCRIPTION
- .it Ecvt
- is called with a floating point number in fr0.
- .s3
- On exit, the number has been converted into a
- string of ascii digits in a buffer pointed to by r0.
- The number of digits produced is controlled
- by a global variable \fI\*_ndigits\fR.
- .s3
- Moreover, the position of the decimal point is
- contained in r2: r2=0 means the d.p. is at the
- left hand end of the string of digits;
- r2>0 means the d.p. is within or to the right
- of the string.
- .s3
- The sign of the number is indicated by r1 (0 for +; 1 for \*-).
- .s3
- The low order digit has suffered decimal rounding
- (i. e. may have been carried into).
- .s3
- From C,
- the
- .it value
- is converted and a pointer to a null-terminated
- string of \fIndigit\fR digits is returned.
- The position of the decimal point is stored indirectly
- through \fIdecpt\fR (negative means to the left of the
- returned digits).
- If the sign of the result is negative,
- the word pointed to by \fIsign\fR is non-zero, otherwise
- it is zero.
- .s3
- \fIFcvt\fR is identical to \fIecvt\fR, except that the correct digit
- been rounded for F-style output of the number
- of digits specified by \fI\(*_ndigits\fR.
- .sh "SEE ALSO"
- printf (III)
- .sh BUGS
-