GNU Prolog (small bug)

Daniel,

Thank you for the very high quality of GNU Prolog (and of the 
documentation).

I am just starting migrating a program I had developped on LPA Prolog 
several years ago, so I have not gone very far yet. However, I am 
encountering the following small bug in the math processing, probably 
linked to precision handling :

Normal behaviour (extract from trace) :

      32   14  Exit: 0.50500011444091797 is 
abs(float_fractional_part(755934729.50500011)) ?

Abnormal behaviour :

      35   15  Exit: 5411863648.0500011 is 
abs(float_fractional_part(7559347295.0500011)) ?

!!!

My system is a Mac OS X 10.2.4. You will find below an extract of my 
system profile.

I am using GNU Prolog 1.2.16, compiled on my system, using defaults from 
.configure.

Txs & BRs

Alain Strebelle
Systems Architect
SWIFT
Avenue Adèle, 1
B-1310 La Hulpe
BELGIUM
Tel: +32 2 655 36 43
Fax: +32 2 655 33 45
eMail: [email protected]


---------------------------------------------------
System Profile
---------------------------------------------------
Software Overview:	
 
+----------------------------------------------------------------------+
     | 
     |
     |  System version                :  Mac OS X 10.2.4 (6I32) 
     |
     |  Boot volume                   :  ASTHD3 
     |
     |  Kernel version                :  Darwin Kernel Version 6.4: Wed 
Jan 29 18:50:42 PST 2003; root:xnu/xnu-344.26.obj~1/RELEASE_PPC   |
     |  User name                     :  STREBELLE Alain		(astrebel) 
     |
     | 
     |
 
+----------------------------------------------------------------------+
Hardware Overview:	
 
+----------------------------------------------------------------------+
     | 
     |
     |  Machine speed                 :  800 MHz 
     |
     |  Bus speed                     :  133 MHz 
     |
     |  Number of processors          :  2 
     |
     |  L2 cache size                 :  256K (times 2) 
     |
     |  L3 cache size                 :  2MB (times 2) 
     |
     |  Machine model                 :  Power Mac G4 (version = 2.1) 
     |
     |  Boot ROM info                 :  4.2.5f1 
     |
     |  Customer serial number        :  CK140H15-L50-ff11 
     |
     |  Sales order number            :  Not available 
     |
     | 
     |
 
+----------------------------------------------------------------------+
Memory Overview:	
     Location	Type	Size
     DIMM0/J21	SDRAM	256 MB
     DIMM1/J22	SDRAM	256 MB
     DIMM2/J23	 	empty