[Bug target/27627] __builtin_nanf("") doesn't return a _quiet_ nan on parisc

[danglin at gcc dot gnu dot org]

------- Comment #4 from danglin at gcc dot gnu dot org  2006-05-17 00:49 -------
This isn't a target bug as far as I can tell.  The value generated
by __builtin_nanf("") as shown by Nan2.c is 0x7fc00000.  The same
value is printed on x86.  This is a signaling NaN.  Positive quiet
NaNs range between 0x7f800001 and 0x7fbfffff.

We have the following code for at -02:

.LC0:
        .word   2143289344
        .text
        .align 4
.globl main
        .type   main, @function
main:
        .PROC
        .CALLINFO FRAME=0,CALLS,SAVE_RP
        .ENTRY
        stw %r2,-20(%r30)
        ldil LR'.LC0,%r28
        ldil LR'.LC1,%r26
        ldw RR'.LC0(%r28),%r25
        ldo RR'.LC1(%r26),%r26
        ldw -20(%r30),%r2
        bl printf,%r0
        nop
        nop
        .EXIT

2143289344 is 0x7fc00000 hex.


-- 

danglin at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |danglin at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27627