decimal_to_floating(3) C LIBRARY FUNCTIONS decimal_to_floating(3)



NAME
     decimaltofloating:  decimaltosingle,  decimaltodouble,
     decimaltoextended  -  convert  decimal record to floating-
     point value

SYNOPSIS
     cc [ flag... ] file ...  -lucb

     #include <floatingpoint.h>
     void decimaltosingle(px, pm, pd, ps)
     single *px ;
     decimalmode *pm;
     decimalrecord *pd;
     fpexceptionfieldtype *ps;
     void decimaltodouble(px, pm, pd, ps)
     double *px ;
     decimalmode *pm;
     decimalrecord *pd;
     fpexceptionfieldtype *ps;
     void decimaltoextended(px, pm, pd, ps)
     extended *px ;
     decimalmode *pm;
     decimalrecord *pd;
     fpexceptionfieldtype *ps;

DESCRIPTION
     The decimaltofloating functions convert the decimal record
     at  *pd  into  a  floating-point value at *px, observing the
     modes specified in *pm and setting exceptions  in  *ps.   If
     there  are  no  IEEE exceptions, *ps will be zero.  pd->sign
     and pd->fpclass are always taken into account.  pd->exponent
     and  pd->ds  are  used  when  pd->fpclass  is  fp_normal  or
     fp_subnormal.  In these cases pd->ds  must  contain  one  or
     more  ASCII  digits  followed  by  a  NULL.  *px is set to a
     correctly rounded approximation to

          (pd->sign)*(pd->ds)*10**(pd->exponent)  Thus   if   pd-
          >exponent  ==  -2  and  pd->ds  == "1234", *px will get
          12.34 rounded to storage precision.  pd->ds cannot have
          more  than  DECIMALSTRINGLENGTH-1  significant digits
          because one character is used to terminate  the  string
          with  a  NULL.  If pd->more!=0 on input then additional
          nonzero digits follow those in  pd->ds;  fp_inexact  is
          set  accordingly  on  output  in *ps.  *px is correctly
          rounded according to the IEEE rounding modes in pm->rd.
          *ps  is  set  to  contain  fp_inexact, fp_underflow, or
          fp_overflow if any of these  arise.   pd->ndigits,  pm-
          >df,   and   pm->ndigits  are  not  used.   strtod(3C),
          scanf(3S),   fscanf(),    and    sscanf()    all    use
          decimaltodouble.





             Last change: BSD Compatibility Package             1

decimal_to_floating(3) C LIBRARY FUNCTIONS decimal_to_floating(3)



SEE ALSO
     scanf(3S), strtod(3C) in the Programmer's Reference Manual.





















































             Last change: BSD Compatibility Package             2