Author: Dann Corbit
Date: 11:49:27 01/24/03
Convolution:
http://beige.ucs.indiana.edu/B673/node14.html
From :
http://claymore.engineer.gvsu.edu/~blaucha/C2D2/The%20C%20Cheat%20Sheet.pdf
int reverse(int i)
{ // Assumes int is a 32-bit integer
int mask;
int rev;
int orvalue;
for (rev = 0, mask = 0x80000000, orvalue = 1;
mask != 0;
mask = mask >> 1, orvalue = orvalue << 1) {
rev = rev | ((i & mask) ? orvalue : 0);
}
return rev;
}
Which I would rewrite as:
int reverse(int i)
{ // Assumes int is a 32-bit integer
int mask;
int rev;
int orvalue;
for (rev = 0, mask = 0x80000000, orvalue = 1; mask != 0; mask >>= 1, orvalue
<<= 1) {
rev |= ((i & mask) ? orvalue : 0);
}
return rev;
}
This has some sort of bit flipper:
http://www.mactech.com/articles/mactech/Vol.14/14.12/Dec98ProgChallenge/
C++ template idea:
http://coppercode.com/resources_bit_basics.htm
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