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Date:      Wed, 19 Jan 2000 07:03:04 -0800 (PST)
From:      asami@cs.berkeley.edu (Satoshi Asami)
To:        current@freebsd.org
Subject:   sigisempty?
Message-ID:  <200001191503.HAA04869@silvia.hip.berkeley.edu>

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Hi,

How do I test if sigset_t is empty in -current?  The xview sources
have this macro:

#define sigisempty(s)   (!(*(s)))

which is ok for the old sigset_t (unsigned int) but obviously won't
work for the new one since it's a struct.

typedef struct __sigset {
       unsigned int    __bits[_SIG_WORDS];
} sigset_t;

Am I supposed to use a loop to iterate through the __bits and test if
all of them are zero or something?

Thanks,
Satoshi


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