scanc
—
use byte string as lookup table index
#include <lib/libkern/libkern.h>
int
scanc
(u_int
size, const u_char
*cp, const u_char
table[], int
mask);
The scanc
() function scans the byte string
cp, whose length is size. A
character in the string is used as an index in the 256-byte
table. If a bitwise-AND of the byte from the table and
mask isn't zero or the string is exhausted, the scan
stops.
The scanc
() function returns the length of the rest of
the string, including the character which made the scan stop. If the
scanc
() function exhausted the string, it returns 0.
The scanc
() function emulates a VAX instruction with the
same name.