ecvt_r, fcvt_r, qecvt_r, qfcvt_r - convert a floating-point number ... size_t len ); [[deprecated]] int qfcvt_r(long double number , int ndigits , int *restrict decptecvt_r, fcvt_r, qecvt_r, qfcvt_r - convert a floating-point number ... size_t len ); [[deprecated]] int qfcvt_r(long double number , int ndigits , int *restrict decptecvt_r, fcvt_r, qecvt_r, qfcvt_r - convert a floating-point number ... size_t len ); [[deprecated]] int qfcvt_r(long double number , int ndigits , int *restrict decptecvt_r, fcvt_r, qecvt_r, qfcvt_r - convert a floating-point number ... size_t len ); [[deprecated]] int qfcvt_r(long double number , int ndigits , int *restrict decpt