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#include <stdlib.h>
#include "logic.h"
#include "error.h"
enum BINARY
logic_not(enum BINARY input) {
switch (input) {
case LOGIC_HIGH:
return LOGIC_LOW;
case LOGIC_LOW:
return LOGIC_HIGH;
default:
emit_error("Severe: Invalid logic value found\n");
/* FIXME Don't abort */
abort();
}
}
enum BINARY
logic_and(enum BINARY a, enum BINARY b) {
if (a == LOGIC_HIGH && b == LOGIC_HIGH)
return LOGIC_HIGH;
else
return LOGIC_LOW;
}
enum BINARY
logic_or(enum BINARY a, enum BINARY b) {
if (a == LOGIC_HIGH || b == LOGIC_HIGH)
return LOGIC_HIGH;
else
return LOGIC_LOW;
}
enum BINARY
logic_xor(enum BINARY a, enum BINARY b) {
if ( (a == LOGIC_HIGH && b == LOGIC_LOW)
|| (a == LOGIC_LOW && b == LOGIC_HIGH))
return LOGIC_HIGH;
else
return LOGIC_LOW;
}
enum BINARY
logic_nand(enum BINARY a, enum BINARY b) {
return logic_not(logic_and(a, b));
}
enum BINARY
logic_nor(enum BINARY a, enum BINARY b) {
return logic_not(logic_or(a, b));
}
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