ECVT(3)
NAME
ecvt, fcvt, gcvt − output conversion
USAGE
char *ecvt(value, ndigit, decpt, sign)
double value;
int ndigit, *decpt, *sign;
char *fcvt(value, ndigit, decpt, sign)
double value;
int ndigit, *decpt, *sign;
char *gcvt(value, ndigit, buf)
double value;
char *buf;
DESCRIPTION
Ecvt converts the value to a null-terminated string of ndigit ASCII digits and returns a pointer to the string. The position of the decimal point relative to the beginning of the string is stored indirectly through decpt (negative means to the left of the returned digits). If the sign of the result is negative, the word that sign points to is not zero; otherwise, it is zero. The low-order digit is rounded.
Fcvt is similar to ecvt, except that the correct digit has been rounded for FORTRAN F-format output of the number of digits specified by ndigits.
Gcvt converts the value to a null-terminated ASCII string in buf and returns a pointer to buf. It attempts to produce ndigit significant digits in FORTRAN F format if possible; otherwise, it produces E format, ready for printing. Trailing zeros may be suppressed.
NOTES
The return values point to static data that each call overwrites.