SND_INTERVAL_LIST(9) PCM API SND_INTERVAL_LIST(9)NAME
snd_interval_list - refine the interval value from the list
int snd_interval_list(struct snd_interval * i, unsigned int count, const unsigned int * list, unsigned int mask);
the interval value to refine
the number of elements in the list
the value list
the bit-mask to evaluate
Refines the interval value from the list. When mask is non-zero, only the elements corresponding to bit 1 are evaluated.
Positive if the value is changed, zero if it's not changed, or a negative error code.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SND_INTERVAL_LIST(9)
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IPSEC_GOODMASK(3) Library Functions Manual IPSEC_GOODMASK(3)NAME
ipsec_goodmask, ipsec_masktobits, ipsec_bitstomask - check if Internet subnet mask is valid, convert Internet subnet mask to bit count,
convert bit count to Internet subnet mask
int goodmask(struct in_addr mask);
int masktobits(struct in_addr mask);
struct in_addr bitstomask(int n);
These functions are obsolete; see ipsec_masktocount(3) for a partial replacement.
Goodmask reports whether the subnet mask is a valid one, i.e. consists of a (possibly empty) sequence of 1s followed by a (possibly empty)
sequence of 0s. Masktobits takes a (valid) subnet mask and returns the number of 1 bits in it. Bitstomask reverses this, returning the
subnet mask corresponding to bit count n.
All masks are in network byte order.
SEE ALSO inet(3), ipsec_atosubnet(3)DIAGNOSTICS
Masktobits returns -1 for an invalid mask. Bitstomask returns an all-zeros mask for a negative or out-of-range n.
Written for the FreeS/WAN project by Henry Spencer.
The error-reporting convention of bitstomask is less than ideal; zero is sometimes a legitimate mask.
11 June 2001 IPSEC_GOODMASK(3)
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