d2b3a5486c
Unions are somewhat hard to implement in Go because they are not a native type. But it is actually possible with some compiler magic. This commit inserts a special "C union" field at the start of a struct to indicate that it is a union. As such a field cannot be written directly in Go, this is a useful to distinguish structs and unions.
45 строки
934 Б
C
45 строки
934 Б
C
#include "main.h"
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int global = 3;
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_Bool globalBool = 1;
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_Bool globalBool2 = 10; // test narrowing
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float globalFloat = 3.1;
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double globalDouble = 3.2;
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_Complex float globalComplexFloat = 4.1+3.3i;
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_Complex double globalComplexDouble = 4.2+3.4i;
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_Complex double globalComplexLongDouble = 4.3+3.5i;
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collection_t globalStruct = {256, -123456, 3.14, 88};
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int globalStructSize = sizeof(globalStruct);
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short globalArray[3] = {5, 6, 7};
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joined_t globalUnion;
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int globalUnionSize = sizeof(globalUnion);
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int fortytwo() {
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return 42;
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}
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int add(int a, int b) {
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return a + b;
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}
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int doCallback(int a, int b, binop_t callback) {
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return callback(a, b);
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}
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void store(int value, int *ptr) {
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*ptr = value;
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}
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void unionSetShort(short s) {
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globalUnion.s = s;
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}
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void unionSetFloat(float f) {
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globalUnion.f = f;
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}
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void unionSetData(short f0, short f1, short f2) {
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globalUnion.data[0] = 5;
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globalUnion.data[1] = 8;
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globalUnion.data[2] = 1;
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}
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