M7350/system/core/libacc/tests/data/structs.c

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2024-09-09 08:52:07 +00:00
// struct definition and declaration
struct a {
int a;
int b;
} c;
// Useless, but legal struct declaration
struct {
int x;
};
// Useful anonymous struct declaration
struct {
int y;
} anon1, anon2;
// forward declarations
struct a;
struct b;
struct c;
struct b {int a; int b; };
// struct c {b g; }; // syntax error.
// struct s {float c,a,b,c;} s; // duplicate struct member
struct c {struct b g; };
// struct a { int w; }; // error
void testCopying() {
struct a {int a[10]; char c;} a, b;
a.c = 37;
b.c = 38;
b = a;
printf("testCopying: %d == %d\n", a.c, b.c);
}
void testUnion() {
union u;
union u {float f;int i;} u;
u.f = 1.0f;
printf("testUnion: %g == 0x%08x\n", u.f, u.i);
}
struct v {float x, y, z, w; };
void add(struct v* result, struct v* a, struct v* b) {
result->x = a->x + b->x;
result->y = a->y + b->y;
result->z = a->z + b->z;
result->w = a->w + b->w;
}
void set(struct v* v, float x, float y, float z, float w) {
v->x = x;
v->y = y;
v->z = z;
v->w = w;
}
void print(struct v* v) {
printf("(%g, %g, %g, %g)\n", v->x, v->y, v->z, v->w);
}
void testArgs() {
struct v a, b, c;
set(&a, 1.0f, 2.0f, 3.0f, 4.0f);
set(&b, 5.0f, 6.0f, 7.0f, 8.0f);
add(&c, &a, &b);
printf("testArgs: ");
print(&c);
}
int main() {
anon1.y = 3;
anon2.y = anon1.y;
testCopying();
testUnion();
testArgs();
struct c cc;
cc.g.a = 3;
c.a = 1;
c.b = 3;
struct a {int x, y; } z;
// struct a {int x, y; } z2;
z.x = c.a;
struct a *pA;
pA = &z;
pA->x += 5;
return pA->x;
}