Date: Mon, 10 Feb 2003 12:35:10 -0500 From: Mike Barcroft <mike@FreeBSD.org> To: standards@FreeBSD.org Cc: Bruce Evans <bde@zeta.org.au> Subject: signbit() implementation question Message-ID: <20030210123510.B40864@espresso.q9media.com>
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I'm wondering if any casts from float->double or long double->double will cause the sign-bit to change. In my implementation I just have the macro pass its argument to a function that takes a double for its argument. In the tests I've done the sign-bit never changes with these casts, but I don't know if this is guaranteed to work for all values or whether this is completely portable. Best regards, Mike Barcroft To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-standards" in the body of the message
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