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#include <stdint.h>
#include "types.h"
#define cmp(a, b) (((a) > (b)) ? 1 : (((a) < (b)) ? -1 : 0))
Status
u32ToNum(U32 x, NumType t, Number *n) {
n->type = t;
switch (t) {
case NUM_U8:
n->u8 = x & 0xFF;
return OK;
case NUM_U16:
n->u16 = x & 0xFFFF;
return OK;
case NUM_U32:
n->u32 = x;
return OK;
case NUM_I8:
n->u8 = x & 0xFF;
n->i8 = *(I8 *)&n->u8;
return OK;
case NUM_I16:
n->u16 = x & 0xFFFF;
n->i16 = *(I16 *)&n->u16;
return OK;
case NUM_I32:
n->i32 = *(I32 *)&x;
return OK;
default:
return FAIL;
}
}
static Status
cmpU32Num(U32 a, Number b, int *ord) {
switch (b.type) {
case NUM_U8:
*ord = cmp(a, b.u8);
return OK;
case NUM_U16:
*ord = cmp(a, b.u16);
return OK;
case NUM_U32:
*ord = cmp(a, b.u32);
return OK;
case NUM_I8:
*ord = cmp(a, b.i8);
return OK;
case NUM_I16:
*ord = cmp(a, b.i16);
return OK;
case NUM_I32:
*ord = cmp(a, b.i32);
return OK;
default:
return FAIL;
}
}
Status
cmpNum(Number a, Number b, int *ord) {
switch (a.type) {
case NUM_U8:
a.i32 = a.u8;
break;
case NUM_U16:
a.i32 = a.u16;
break;
case NUM_U32:
return cmpU32Num(a.u32, b, ord);
case NUM_I8:
a.i32 = a.i8;
break;
case NUM_I16:
a.i32 = a.i16;
break;
case NUM_I32:
break; // do nothing
default:
return FAIL;
}
switch (b.type) {
case NUM_U8:
*ord = cmp(a.i32, b.u8);
return OK;
case NUM_U16:
*ord = cmp(a.i32, b.u16);
return OK;
case NUM_U32:
*ord = cmp(a.i32, b.u32);
return OK;
case NUM_I8:
*ord = cmp(a.i32, b.i8);
return OK;
case NUM_I16:
*ord = cmp(a.i32, b.i16);
return OK;
case NUM_I32:
*ord = cmp(a.i32, b.i32);
return OK;
default:
return FAIL;
}
}
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