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Conference clt::rtl

Title:	OpenVMS Run-Time Libraries
Notice:	Routines documented in the Run-Time Library volumes covered here
Moderator:	LOWFAT::DIETER

Created:	Sat Jan 25 1986
Last Modified:	Wed May 28 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	966
Total number of notes:	4598

961.0. "LIB$INT_OVER integer overflow not on Alpha AXP?" by UTRUST::TIMMER (Semper TECO!) Thu Feb 13 1997 07:27

    
    Why is LIB$INT_OVER not available on Alpha?
    
    Rien.

T.R Title User Personal
Name Date Lines

961.1 QUARK::LIONEL Free advice is worth every cent Thu Feb 13 1997 12:28 6

T.R	Title	User	Personal Name	Date	Lines
961.1		QUARK::LIONEL	Free advice is worth every cent	`Thu Feb 13 1997 12:28`	6
	Because the mechanism isn't available. On VAX, all one needs to do is set the IV bit in the PSL, and overflow checking is turned on (or clear it and it's off). There is no PSL on Alpha - instead, the compiler generates different instructions for arithmetic with and without overflow checking. Steve

Because the mechanism isn't available.  On VAX, all one needs to do is set the
IV bit in the PSL, and overflow checking is turned on (or clear it and it's
off).  There is no PSL on Alpha - instead, the compiler generates different
instructions for arithmetic with and without overflow checking.

					Steve