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// colour.c
// includes
#include "colour.h"
#include "util.h"
// functions
// colour_is_ok()
bool colour_is_ok(int colour) {
return colour == Black || colour == White;
}
// colour_is_white()
bool colour_is_white(int colour) {
ASSERT(colour_is_ok(colour));
return colour == White;
}
// colour_is_black()
bool colour_is_black(int colour) {
ASSERT(colour_is_ok(colour));
return colour == Black;
}
// colour_equal()
bool colour_equal(int colour_1, int colour_2) {
ASSERT(colour_is_ok(colour_2));
return (colour_1 & colour_2) != 0;
}
// colour_opp()
int colour_opp(int colour) {
ASSERT(colour_is_ok(colour));
return colour ^ (BlackFlag^WhiteFlag);
}
// end of colour.cpp
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