Mail Archives: djgpp-workers/2003/11/18/07:32:33
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In a message dated 11/18/2003 1:00:22 AM Eastern Standard Time,
eliz AT elta DOT co DOT il writes:
> Personally, I don't like very much the idea of fiddling with the x87
> status and control bits for implementing the fe* functions. I think
> we should _read_ those bits and put them into the values those
> function return, but we should not _write_ the bits.
>
> In other words, feraiseexcept should add bits to some word it
> maintains internally, but not in the x87 status word.
>
But, that's precisely what _control87() does -- it sets the bits in the
status word. The fact that the fe* functions exist doesn't imply that a user has
to use them any more than does the existence of the _*87() functions.
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<HTML><FONT FACE=3Darial,helvetica><FONT SIZE=3D3 FAMILY=3D"SERIF" FACE=3D"=
Georgia" LANG=3D"0">In a message dated 11/18/2003 1:00:22 AM Eastern Standar=
d Time, eliz AT elta DOT co DOT il writes:<BR>
<BR>
<BLOCKQUOTE TYPE=3DCITE style=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT=
: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px"></FONT><FONT COLOR=3D"#000000"=
style=3D"BACKGROUND-COLOR: #ffffff" SIZE=3D2 FAMILY=3D"SANSSERIF" FACE=3D"A=
rial" LANG=3D"0">Personally, I don't like very much the idea of fiddling wit=
h the x87<BR>
status and control bits for implementing the fe* functions. I think<BR=
>
we should _read_ those bits and put them into the values those<BR>
function return, but we should not _write_ the bits.<BR>
<BR>
In other words, feraiseexcept should add bits to some word it<BR>
maintains internally, but not in the x87 status word.<BR>
</BLOCKQUOTE><BR>
</FONT><FONT COLOR=3D"#000000" style=3D"BACKGROUND-COLOR: #ffffff" SIZE=3D3=
FAMILY=3D"SERIF" FACE=3D"Georgia" LANG=3D"0"><BR>
But, that's precisely what _control87() does -- it sets the bits in the stat=
us word. The fact that the fe* functions exist doesn't imply that a us=
er has to use them any more than does the existence of the _*87() functions.=
</FONT></HTML>
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