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#include "_.h"
#include <math.h>
#undef free
#undef malloc
#undef calloc
#undef realloc
static void **_alloced = nullptr;
static size_t _alloced_size = 0;
static size_t _alloced_capacity = 0;
void
wdeinit(void)
{
if (_alloced != nullptr) {
rfor (i, 0u, _alloced_size)
free(_alloced[i]);
free(_alloced);
}
_alloced = nullptr;
_alloced_size = 0;
_alloced_capacity = 0;
}
void *
alloc(size_t size)
{
_alloced_size += 1;
if (_alloced == nullptr) {
_alloced = calloc(sizeof(void *), 16);
assert(_alloced != nullptr);
_alloced_capacity = 16;
}
if (_alloced_size > _alloced_capacity) {
size_t new_alloced_capacity = 16;
while (new_alloced_capacity <= _alloced_size)
new_alloced_capacity *= 2;
void *new_alloced =
realloc(_alloced, new_alloced_capacity * sizeof(void *));
_alloced_size -= (new_alloced == nullptr);
assert(new_alloced != nullptr);
_alloced = new_alloced;
_alloced_capacity = new_alloced_capacity;
}
_alloced[_alloced_size - 1] = calloc(1, size);
assert(_alloced[_alloced_size - 1] != nullptr);
return _alloced[_alloced_size - 1];
}
void
_free(void *ptr)
{
rfor (i, 0u, _alloced_size) {
if (_alloced[i] == ptr) {
free(_alloced[i]);
_alloced[i] = nullptr;
rfor (k, i, _alloced_size - 1)
_alloced[k] = _alloced[k + 1];
_alloced_size -= 1;
return;
}
}
pwrn("double free of %p", ptr);
}
void *
_realloc(void *ptr, size_t size)
{
rfor (i, 0u, _alloced_size) {
if (_alloced[i] == ptr) {
void *new_ptr = realloc(ptr, size);
assert(new_ptr != nullptr);
_alloced[i] = new_ptr;
return new_ptr;
}
}
panic("fucked up realloc, have fun debugging");
__builtin_unreachable();
}
// mathematical vectors
float2
tofloat2(int2 a)
{
return F2(a.x, a.y);
}
int2
toint2(float2 a)
{
return I2(a.x, a.y);
}
float2
float2_sub(float2 a, float2 b)
{
return F2(a.x - b.x, a.y - b.y);
}
float2
float2_add(float2 a, float2 b)
{
return F2(a.x + b.x, a.y + b.y);
}
float2
float2_mul(float2 a, float x)
{
return F2(a.x * x, a.y * x);
}
float2
float2_div(float2 a, float x)
{
return F2(a.x / x, a.y / x);
}
float
float2_length(float2 a)
{
return sqrtf(a.x * a.x + a.y * a.y);
}
float2
float2_normalize(float2 a)
{
const auto len = float2_length(a);
if (len < 1.0)
return a;
return F2(a.x / len, a.y / len);
}
float
float2_angle(float2 a)
{
return atanf(a.y / a.x) / 3.125 / 2 + 0.5 * (a.x < 0);
}
int2
float2_round(float2 a)
{
return I2(roundf(a.x), roundf(a.y));
}
float2
float2_clamp(float2 min, float2 a, float2 max)
{
rfor (i, 0, 2) {
if (a.a[i] < min.a[i])
a.a[i] = min.a[i];
if (a.a[i] > max.a[i])
a.a[i] = max.a[i];
}
return a;
}
float2
float2_swp(float2 a)
{
return F2(a.y, a.x);
}
float2
float2_lerp(float2 a, float2 b, float x)
{
return float2_add(a, float2_mul(float2_sub(b, a), x));
}
int2
int2_sub(int2 a, int2 b)
{
return I2(a.x - b.x, a.y - b.y);
}
int2
int2_add(int2 a, int2 b)
{
return I2(a.x + b.x, a.y + b.y);
}
int2
int2_mul(int2 a, float x)
{
return I2(a.x * x, a.y * x);
}
int2
int2_div(int2 a, float x)
{
return I2(a.x / x, a.y / x);
}
static int
___abs(int a)
{
return (a < 0) ? (-a) : (a);
}
int2
int2_abs(int2 a)
{
return I2(___abs(a.x), ___abs(a.y));
}
int2
int2_swp(int2 a)
{
return I2(a.y, a.x);
}
int2
int2_inv(int2 a)
{
return I2(-a.x, -a.y);
}
int2
int4_xy(int4 a)
{
return I2(a.x, a.y);
}
int2
int4_zw(int4 a)
{
return I2(a.z, a.w);
}
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