Manual Pages for UNIX Operating System command usage for man decimal_to_double

Standard C Library Functions              decimal_to_floating(3C)



NAME
     decimal_to_floating,  decimal_to_single,  decimal_to_double,
     decimal_to_extended,  decimal_to_quadruple - convert decimal
     record to floating-point value

SYNOPSIS
     #include 

     void decimal_to_single(single *px, decimal_mode *pm,
          decimal_record *pd, fp_exception_field_type *ps);


     void decimal_to_double(double *px, decimal_mode *pm,
          decimal_record *pd, fp_exception_field_type *ps);


     void decimal_to_extended(extended *px, decimal_mode *pm,
          decimal_record *pd, fp_exception_field_type *ps);


     void decimal_to_quadruple(quadruple *px, decimal_mode *pm,
          decimal_record *pd, fp_exception_field_type *ps);


DESCRIPTION
     These  functions  convert  the  decimal  record  *pd  to   a
     floating-point  value  *px  observing the rounding direction
     specified in *pm and setting *ps to  reflect  any  floating-
     point exceptions that occur.


     When  pd->fpclass  is  fp_zero,  fp_infinity,  fp_quiet,  or
     fp_signaling,  *px is set to zero, infinity, a quiet NaN, or
     a signaling NaN, respectively, with the  sign  indicated  by
     pd->sign. All other fields in *pd are ignored.


     When pd->fpclass is fp_normal or fp_subnormal,  pd->ds  must
     contain a null-terminated string of one or more ASCII digits
     representing a non-zero integer m, and pd->ndigits  must  be
     equal  to  the  length  of this string. Then *px is set to a
     correctly rounded approximation to

       -1**(pd->sign) * m * 10**(pd->exponent)



     pd->more can be set to a non-zero  value  to  indicate  that
     insignificant  trailing  digits were omitted from pd->ds. In
     this case, m is replaced by m  +  delta  in  the  expression
     above, where delta is some tiny positive fraction.




SunOS 5.11           Last change: 1 Oct 2001                    1






Standard C Library Functions              decimal_to_floating(3C)



     The converted value is rounded  according  to  the  rounding
     direction  specified  in  pm->rd. pm->df and pm->ndigits are
     not used.


     On exit, *ps contains a bitwise OR of flags corresponding to
     any floating-point exceptions that occurred. The only possi-
     ble exceptions are underflow, overflow, and inexact.  If  no
     floating-point exceptions occurred, *ps is set to zero.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|


SEE ALSO
     scanf(3C), string_to_decimal(3C), strtod(3C), attributes(5)






























SunOS 5.11           Last change: 1 Oct 2001                    2