Re: Floating Point Question

[eric.delong@xxxxxxxxxxxxxxxxx]

     Bill, Check out the atof function provided by the C runtime support 
     library. You can find information on this in "C/C++ Run-time 
     Library Reference". These are relatively easy to prototype if you 
     follow the prototyping rules as listed in the "Sorcer's guide". 
     
     Here's part of the page from bookmanager:
     
1.2.11 atof() -- Convert Character String to Float
 
Format
 
  #include <stdlib.h>
  double atof(const char *string);
 
Description
 
Language Level: ANSI.
 
The atof() function converts a character string to a double-precision 
floating-point value.
 
The input string is a sequence of characters that can be interpreted as a 
numeric value of the specified 
return type. The function stops reading the input string at the first character 
that it cannot recognize as 
part of a number. This character can be the null character that ends the string.
 

For the atof() function, digits is one or more decimal digits; if no digits 
appear before the decimal point, 
at least one digit must appear after the decimal point. The decimal digits can 
precede an exponent, 
introduced by the letter e or E. The exponent is a decimal integer, which may be
signed.
 
The atof() function will not fail if a character other than a digit follows an E
or if e is read in as an 
exponent. For example, 100elf will be converted to the floating-point value 
100.0. The accuracy is up to 17 
significant character digits.
 
Return Value
 
The atof() function returns a double value that is produced by interpreting the 
input characters as a 
number. The return value is 0 if the function cannot convert the input to a 
value of that type. The return 
value is undefined in case of overflow.
 



______________________________ Reply Separator _________________________________
Subject: Floating Point Question 
Author:  <RPG400-L@midrange.com> at INET_WACO
Date:    5/24/00 9:40 AM


In an RPG ILE program, I have a 14-byte alpha Field that contains the 
external representation of a floating point value, for example: 
+1.2345678E005.  How can I take this alpha field and convert it into a 
4-byte Floating Point Field (with the value 123456.78 in this example)?
     
Neither the %EDITFLT (Convert to Float External Representation) or %FLOAT 
(Convert to Floating Format) BIF's do what I need.  I don't have any 
experience working with Floating Point fields.  Does anyone have any ideas 
for me?
     
Thanks,  Bill
     
William K. Reger
Senior Project Manager
Levitz Furniture Corporation
Phone:  (561) 994-5114
Web:  www.wrkdbf.com <http://www.wrkdbf.com/> 
E-mail:  breger@levitz.com <mailto:breger@levitz.com> 
+---
| This is the RPG/400 Mailing List!
| To submit a new message, send your mail to RPG400-L@midrange.com. 
| To subscribe to this list send email to RPG400-L-SUB@midrange.com.
| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com 
+---
     


+---
| This is the RPG/400 Mailing List!
| To submit a new message, send your mail to RPG400-L@midrange.com.
| To subscribe to this list send email to RPG400-L-SUB@midrange.com.
| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---