ECVT(III) 4/30/73 ECVT(III)
NAME
ecvt, fcvt - output conversion
SYNOPSIS
**jsr** **pc,ecvt**
**jsr** **pc,fcvt**
**char** ***ecvt(value,** **ndigit,** **decpt,** **sign)**
**double** **value;**
**int** **ndigit,** ***decpt,** ***sign;**
**char** ***fcvt(value,** **ndigit,** **decpt,** **sign)**
**...**
DESCRIPTION
*Ecvt* is called with a floating point number in fr0.
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 **_***ndigits*.
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.
The sign of the number is indicated by r1 (0 for +; 1 for
-).
The low order digit has suffered decimal rounding (i. e. may
have been carried into).
From C, the *value* is converted and a pointer to a null-ter-
minated string of *ndigit* digits is returned. The position
of the decimal point is stored indirectly through *decpt*
(negative means to the left of the returned digits). If the
sign of the result is negative, the word pointed to by *sign*
is non-zero, otherwise it is zero.
*Fcvt* is identical to *ecvt*, except that the correct digit
been rounded for F-style output of the number of digits
specified by **_***ndigits*.
SEE ALSO
printf(III)
BUGS
- 1 -