ECVT(3)                        Library Routines                        ECVT(3)




NAME

       ecvt, fcvt - convert a floating-point number to a string


SYNOPSIS

       #include <stdlib.h>

       char *ecvt (double number, size_t ndigits, int *decpt, int *sign);
       char *fcvt (double number, size_t ndigits, int *decpt, int *sign);


DESCRIPTION

       The  ecvt function converts number to a NULL terminated string of ndig-
       its digits, and returns a pointer to the string. The string itself does
       not contain a decimal point; however, the position of the decimal point
       relative to the start of the string is stored  in  decpt.   A  negative
       value  for  decpt  means  that  the decimal point is to the left of the
       start of the string.  If the sign of number is negative, sign is set to
       a non-zero value, otherwise it's set to 0.

       The  fcvt  function is identical to ecvt, except that ndigits specifies
       the number of digits after the decimal point.


RETURN VALUE

       Both the ecvt and fcvt functions return a pointer to  a  static  string
       containing  the  ASCII  representation of number.  The static string is
       overwritten by each call to ecvt or fcvt.


SEE ALSO

       gcvt(3), sprintf(3)



GNO                            15 September 1997                       ECVT(3)

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