X-Authentication-Warning: delorie.com: mail set sender to djgpp-workers-bounces using -f From: Kbwms AT aol DOT com Message-ID: <1d2.19fe4c86.2d64ee60@aol.com> Date: Wed, 18 Feb 2004 11:35:44 EST Subject: Re: C99 Functions Under Development and Checkout To: djgpp-workers AT delorie DOT com MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_1d2.19fe4c86.2d64ee60_boundary" X-Mailer: 8.0 for Windows sub 6021 Reply-To: djgpp-workers AT delorie DOT com --part1_1d2.19fe4c86.2d64ee60_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 2/18/2004 10:42:56 AM Eastern Standard Time, rudd AT cyberoptics DOT com writes: > Since, for example, inf/inf is outside the domain over which the arc > tangent function is defined, it would seem that a domain error should occur. > It is not clear to which function you are referring. The case atan2(Y, X) is handled in the standard: If Y is +-Inf and X is -Inf, +-3pi/4 shall be returned. If Y is +-Inf and X is +Inf, +-pi/4 shall be returned. --part1_1d2.19fe4c86.2d64ee60_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable In a message dated 2/18/2004 10:42:56= AM Eastern Standard Time, rudd AT cyberoptics DOT com writes:

Since, for example, inf/inf is= outside the domain over which the arc
tangent function is defined, it would seem that a domain error should occur.=

<= BR> It is not clear to which function you are referring.  The case atan2(Y,= X) is handled in the standard:

       If Y is +-Inf and X is -Inf, +-3pi/4 sh= all be returned.
       If Y is +-Inf and X is +Inf, +-pi/4 sha= ll be returned. --part1_1d2.19fe4c86.2d64ee60_boundary--