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2
.gitignore vendored
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@ -3,6 +3,4 @@
01_vec_no_metaprogramming 01_vec_no_metaprogramming
02_vec_macros 02_vec_macros
03_vec_xmacros 03_vec_xmacros
04_vec_codegen
04_codegen/codegen
compile_commands.json compile_commands.json

498
04_codegen/codegen.c
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#include "codegen.h"
#include "../mem_arena/arena.h"
#include <stdio.h>
#include <string.h>
#define ARR_LEN(ARR) sizeof(ARR) / sizeof(ARR[0])
#define MEM_ARENA_LENGTH 10 * 1024 * 1024
#define LONG_BUFFER_LENGTH 8192
#define MEDIUM_BUFFER_LENGTH 4096
#define SHORT_BUFFER_LENGTH 1024
enum vec_funcs {
VEC_FUNC_ADD,
VEC_FUNC_SUB,
VEC_FUNC_MUL,
VEC_FUNC_DOT,
VEC_FUNC_MAGNITUDE,
VEC_FUNC_PRINT,
COUNT_VEC_FUNCS,
};
void write_vec_func_implementation(arena_t *arena, func_data_t *func,
const struct_def_t *s, char *body,
const char *operator, const char * separator,
const char *end);
int main(int argc, char *argv[]) {
const char *output_file = "vec.h";
FILE *temp = fopen(output_file, "w");
fclose(temp);
FILE *fp = fopen(output_file, "a");
arena_t main_mem = {0};
arena_init(&main_mem, MEM_ARENA_LENGTH);
arena_t temp_mem = {0};
arena_init(&temp_mem, MEM_ARENA_LENGTH);
const char *header_name = "VEC_H";
write_header_guard_open(&temp_mem, fp, header_name);
include_header_t headers[] = {
{.type = INCLUDE_TYPE_USER, .header = "../aliases.h"},
{.type = INCLUDE_TYPE_SYSTEM, .header = "stdio.h"},
{.type = INCLUDE_TYPE_SYSTEM, .header = "math.h"},
};
for (u64 i = 0; i < ARR_LEN(headers); ++i) {
write_include(&temp_mem, fp, &(headers[i]));
}
fwrite("\n", 1, 1, fp);
type_info_t base_types[] = {
(type_info_t){.name = "i32", .short_name = 'i', .printf_spec = 'd'},
(type_info_t){.name = "f32", .short_name = 'f', .printf_spec = 'f'},
};
u64 dimensions[] = {2, 3};
const char *member_names[] = {"x", "y", "z"};
const char *arg_names[] = {"v1", "v2"};
func_data_t funcs[COUNT_VEC_FUNCS] = {
[VEC_FUNC_ADD] =
(func_data_t){
.base_name = "vec_add",
.arg_count = 2,
.arg_names = arg_names,
},
[VEC_FUNC_SUB] =
(func_data_t){
.base_name = "vec_sub",
.arg_count = 2,
.arg_names = arg_names,
},
[VEC_FUNC_MUL] =
(func_data_t){
.base_name = "vec_mul",
.arg_count = 2,
.arg_names = arg_names,
},
[VEC_FUNC_DOT] =
(func_data_t){
.base_name = "vec_dot",
.arg_count = 2,
.arg_names = arg_names,
},
[VEC_FUNC_MAGNITUDE] =
(func_data_t){
.base_name = "vec_magnitude",
.arg_count = 1,
.arg_names = arg_names,
},
[VEC_FUNC_PRINT] =
(func_data_t){
.base_name = "vec_print",
.arg_count = 1,
.arg_names = arg_names,
},
};
for (u64 i = 0; i < COUNT_VEC_FUNCS; ++i) {
write_macro_func(&temp_mem, fp, &(funcs[i]));
}
data_type_t void_data_type = (data_type_t){
.type = DATA_TYPE_NORMAL,
.type_info = (type_info_t){.name = "void"},
};
for (u64 i = 0; i < ARR_LEN(base_types); ++i) {
for (u64 j = 0; j < ARR_LEN(dimensions); ++j) {
type_info_t base_type = base_types[i];
data_type_t base_data_type =
(data_type_t){.type = DATA_TYPE_NORMAL, .type_info = base_type};
u64 mem_count = dimensions[j];
char *typename = (char *)arena_alloc(&main_mem, SHORT_BUFFER_LENGTH);
sprintf(typename, "vec%lu%c_t", mem_count, base_type.short_name);
identifier_t members[mem_count];
memset(members, 0, sizeof(identifier_t) * mem_count);
for (u64 k = 0; k < mem_count; ++k) {
members[k] = (identifier_t){
.name = member_names[k],
.type = base_data_type,
};
}
struct_def_t s = (struct_def_t){
.name = typename,
.mem_count = mem_count,
.members = members,
};
data_type_t vec_data_type =
(data_type_t){.type = DATA_TYPE_STRUCT, .struct_def = s};
write_struct(&temp_mem, fp, &s);
funcs[VEC_FUNC_ADD].func.ret_type = vec_data_type;
funcs[VEC_FUNC_SUB].func.ret_type = vec_data_type;
funcs[VEC_FUNC_MUL].func.ret_type = vec_data_type;
funcs[VEC_FUNC_DOT].func.ret_type = base_data_type;
funcs[VEC_FUNC_MAGNITUDE].func.ret_type = base_data_type;
funcs[VEC_FUNC_PRINT].func.ret_type = void_data_type;
for (u64 k = 0; k < COUNT_VEC_FUNCS; ++k) {
func_data_t *func = &(funcs[k]);
char *name = (char *)arena_alloc(&main_mem, SHORT_BUFFER_LENGTH);
sprintf(name, "%s_%s", func->base_name, typename);
u64 alloc_size = sizeof(identifier_t) * func->arg_count;
identifier_t *args = (identifier_t *)arena_alloc(&main_mem, alloc_size);
for (u64 l = 0; l < func->arg_count; ++l) {
args[l] =
(identifier_t){.type = vec_data_type, .name = func->arg_names[l]};
}
func->func.name = name;
func->func.args = args;
write_func_declaration(&temp_mem, fp, func);
}
const char *vec_impl_begin = "#ifdef VEC_IMPLEMENTATION\n\n";
fwrite(vec_impl_begin, strlen(vec_impl_begin), 1, fp);
const char *operators[VEC_FUNC_DOT] = {
[VEC_FUNC_ADD] = "+",
[VEC_FUNC_SUB] = "-",
[VEC_FUNC_MUL] = "*",
};
for (u64 k = 0; k < VEC_FUNC_DOT; ++k) {
func_data_t *func = &(funcs[k]);
char *body = (char *)arena_alloc(&main_mem, MEDIUM_BUFFER_LENGTH);
sprintf(body, "\treturn (%s) {", typename);
write_vec_func_implementation(&main_mem, func, &s, body, operators[k],
", ", "};\n");
write_func_defintion(&temp_mem, fp, func);
}
func_data_t *vec_dot_func = &(funcs[VEC_FUNC_DOT]);
char *vec_dot_body = (char *)arena_alloc(&main_mem, MEDIUM_BUFFER_LENGTH);
strcat(vec_dot_body, "\treturn ");
write_vec_func_implementation(&main_mem, vec_dot_func, &s, vec_dot_body,
operators[VEC_FUNC_MUL], " +", " 0;\n");
write_func_defintion(&temp_mem, fp, vec_dot_func);
func_data_t *vec_magnitude_func = &(funcs[VEC_FUNC_MAGNITUDE]);
char *vec_magnitude_body =
(char *)arena_alloc(&main_mem, MEDIUM_BUFFER_LENGTH);
sprintf(vec_magnitude_body, "\t%s dotproduct = %s(%s, %s);\n",
base_type.name, vec_dot_func->func.name,
vec_magnitude_func->arg_names[0],
vec_magnitude_func->arg_names[0]);
strcat(vec_magnitude_body, "\treturn (");
strcat(vec_magnitude_body, base_type.name);
strcat(vec_magnitude_body, ")sqrtf(dotproduct);\n");
vec_magnitude_func->func.body = vec_magnitude_body;
write_func_defintion(&temp_mem, fp, vec_magnitude_func);
func_data_t *vec_print_func = &(funcs[VEC_FUNC_PRINT]);
char *vec_print_body =
(char *)arena_alloc(&main_mem, MEDIUM_BUFFER_LENGTH);
strcat(vec_print_body, "\tprintf(\"{%");
for (u64 k = 0; k < s.mem_count; ++k) {
if (k > 0) {
strcat(vec_print_body, ", %");
}
strcat(vec_print_body, &(base_type.printf_spec));
}
strcat(vec_print_body, "}\\n\",");
for (u64 k = 0; k < s.mem_count; ++k) {
if (k > 0) {
strcat(vec_print_body, ",");
}
for (u64 l = 0; l < vec_print_func->arg_count; ++l) {
char *arg = (char *)arena_alloc(&main_mem, SHORT_BUFFER_LENGTH);
sprintf(arg, " %s.%s", vec_print_func->arg_names[l],
s.members[k].name);
strcat(vec_print_body, arg);
}
}
strcat(vec_print_body, ");\n");
vec_print_func->func.body = vec_print_body;
write_func_defintion(&temp_mem, fp, vec_print_func);
const char *vec_impl_end = "#endif // VEC_IMPLEMENTATION\n\n";
fwrite(vec_impl_end, strlen(vec_impl_end), 1, fp);
}
arena_clear(&main_mem);
}
write_header_guard_close(&temp_mem, fp, header_name);
arena_free(&temp_mem);
arena_free(&main_mem);
fclose(fp);
return 0;
}
void write_header_guard_open(arena_t *arena, FILE *fp, const char *header_id) {
char header_guard[LONG_BUFFER_LENGTH] = {0};
sprintf(header_guard, "#ifndef %s\n#define %s\n\n", header_id, header_id);
u64 length = strlen(header_guard);
fwrite(header_guard, length, 1, fp);
}
void write_header_guard_close(arena_t *arena, FILE *fp, const char *header_id) {
char *header_guard = (char *)arena_alloc(arena, LONG_BUFFER_LENGTH);
if (!header_guard) {
return;
}
sprintf(header_guard, "#endif // %s", header_id);
u64 length = strlen(header_guard);
fwrite(header_guard, length, 1, fp);
arena_clear(arena);
}
void write_include(arena_t *arena, FILE *fp, const include_header_t *header) {
u64 length = 0;
char *include_line = (char *)arena_alloc(arena, LONG_BUFFER_LENGTH);
if (!include_line) {
return;
}
switch (header->type) {
case INCLUDE_TYPE_SYSTEM:
sprintf(include_line, "#include <%s>\n", header->header);
length = strlen(include_line);
fwrite(include_line, length, 1, fp);
break;
case INCLUDE_TYPE_USER:
sprintf(include_line, "#include \"%s\"\n", header->header);
length = strlen(include_line);
fwrite(include_line, length, 1, fp);
break;
default:
break;
}
arena_clear(arena);
}
void write_data_type(char *dst, const data_type_t *data_type) {
switch (data_type->type) {
case DATA_TYPE_NORMAL:
strcat(dst, data_type->type_info.name);
break;
case DATA_TYPE_STRUCT:
strcat(dst, data_type->struct_def.name);
break;
default:
break;
}
}
void write_identifier(char *dst, const identifier_t *identifier) {
write_data_type(dst, &(identifier->type));
strcat(dst, " ");
strcat(dst, identifier->name);
}
void write_struct(arena_t *arena, FILE *fp, const struct_def_t *struct_def) {
char *struct_output = (char *)arena_alloc(arena, LONG_BUFFER_LENGTH);
if (!struct_output) {
return;
}
strcat(struct_output, "typedef struct {");
for (u64 i = 0; i < struct_def->mem_count; ++i) {
strcat(struct_output, "\n\t");
const identifier_t *member = &(struct_def->members[i]);
write_identifier(struct_output, member);
strcat(struct_output, ";");
}
strcat(struct_output, "\n} ");
strcat(struct_output, struct_def->name);
strcat(struct_output, ";\n\n");
u64 length = strlen(struct_output);
fwrite(struct_output, length, 1, fp);
arena_clear(arena);
}
void write_func_prototype(char *dst, const func_data_t *func) {
strcat(dst, "INTERNAL ");
write_data_type(dst, &(func->func.ret_type));
strcat(dst, " ");
strcat(dst, func->func.name);
strcat(dst, "(");
for (u64 i = 0; i < func->arg_count; ++i) {
if (i > 0) {
strcat(dst, ", ");
}
const identifier_t *arg = &(func->func.args[i]);
write_identifier(dst, arg);
}
strcat(dst, ")");
}
void write_func_declaration(arena_t *arena, FILE *fp, const func_data_t *func) {
char *func_declaration = (char *)arena_alloc(arena, LONG_BUFFER_LENGTH);
if (!func_declaration) {
return;
}
write_func_prototype(func_declaration, func);
strcat(func_declaration, ";\n\n");
u64 length = strlen(func_declaration);
fwrite(func_declaration, length, 1, fp);
arena_clear(arena);
}
void write_func_defintion(arena_t *arena, FILE *fp, const func_data_t *func) {
char *func_definition = (char *)arena_alloc(arena, LONG_BUFFER_LENGTH);
if (!func_definition) {
return;
}
write_func_prototype(func_definition, func);
strcat(func_definition, " {\n");
strcat(func_definition, func->func.body);
strcat(func_definition, "}\n\n");
u64 length = strlen(func_definition);
fwrite(func_definition, length, 1, fp);
arena_clear(arena);
}
void write_macro_func(arena_t *arena, FILE *fp, const func_data_t *func) {
char *func_definition = (char *)arena_alloc(arena, LONG_BUFFER_LENGTH);
if (!func_definition) {
return;
}
strcat(func_definition, "#define ");
strcat(func_definition, func->base_name);
strcat(func_definition, "(T");
for (u64 i = 0; i < func->arg_count; ++i) {
strcat(func_definition, ", ");
strcat(func_definition, func->arg_names[i]);
}
strcat(func_definition, ") ");
strcat(func_definition, func->base_name);
strcat(func_definition, "_##T(");
for (u64 i = 0; i < func->arg_count; ++i) {
if (i > 0) {
strcat(func_definition, ", ");
}
strcat(func_definition, func->arg_names[i]);
}
strcat(func_definition, ")\n\n");
u64 length = strlen(func_definition);
fwrite(func_definition, length, 1, fp);
arena_clear(arena);
}
void write_vec_func_implementation(arena_t *arena, func_data_t *func,
const struct_def_t *s, char *body,
const char *operator, const char * separator,
const char *end) {
for (u64 l = 0; l < s->mem_count; ++l) {
for (u64 m = 0; m < func->arg_count; ++m) {
if (m > 0) {
strcat(body, " ");
strcat(body, operator);
}
char *arg = (char *)arena_alloc(arena, SHORT_BUFFER_LENGTH);
sprintf(arg, " %s.%s", func->arg_names[m], s->members[l].name);
strcat(body, arg);
}
strcat(body, separator);
}
strcat(body, end);
func->func.body = body;
}

77
04_codegen/codegen.h
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@ -1,77 +0,0 @@
#ifndef CODEGEN_H
#define CODEGEN_H
#include "../aliases.h"
#include "../mem_arena/arena.h"
#include <stdio.h>
typedef enum {
INCLUDE_TYPE_SYSTEM,
INCLUDE_TYPE_USER,
COUNT_INCLUDE_TYPES,
} include_type;
typedef struct {
include_type type;
const char *header;
} include_header_t;
typedef struct {
const char *name;
char short_name;
char printf_spec;
} type_info_t;
typedef struct identifier_s identifier_t;
typedef struct {
const char *name;
u64 mem_count;
identifier_t *members;
} struct_def_t;
typedef enum {
DATA_TYPE_NORMAL,
DATA_TYPE_STRUCT,
COUNT_DATA_TYPE,
} data_type;
typedef struct {
data_type type;
union {
type_info_t type_info;
struct_def_t struct_def;
};
} data_type_t;
struct identifier_s {
data_type_t type;
const char *name;
};
typedef struct {
data_type_t ret_type;
const char *name;
identifier_t *args;
const char *body;
} func_t;
typedef struct {
const char *base_name;
u64 arg_count;
const char **arg_names;
func_t func;
} func_data_t;
void write_header_guard_open(arena_t *arena, FILE *fp, const char *header_id);
void write_header_guard_close(arena_t *arena, FILE *fp, const char *header_id);
void write_include(arena_t *arena, FILE *fp, const include_header_t *header);
void write_data_type(char *dst, const data_type_t *data_type);
void write_identifier(char *dst, const identifier_t *identifier);
void write_struct(arena_t *arena, FILE *fp, const struct_def_t *struct_def);
void write_func_prototype(char *dst, const func_data_t *func);
void write_func_declaration(arena_t *arena, FILE *fp, const func_data_t *func);
void write_func_defintion(arena_t *arena, FILE *fp, const func_data_t *func);
void write_macro_func(arena_t *arena, FILE *fp, const func_data_t *func);
#endif // !CODEGEN_H

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04_codegen/main.c
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#define VEC_IMPLEMENTATION
#include "vec.h"
#undef VEC_IMPLEMENTATION
#include <stdio.h>
int main(int argc, char *argv[]) {
vec2i_t v1 = (vec2i_t){2, 3};
vec2i_t v2 = (vec2i_t){4, 5};
vec_print(vec2i_t, vec_add(vec2i_t, v1, v2));
vec_print(vec2i_t, vec_sub(vec2i_t, v1, v2));
vec_print(vec2i_t, vec_mul(vec2i_t, v1, v2));
printf("%d\n", vec_dot(vec2i_t, v1, v2));
printf("%d\n", vec_magnitude(vec2i_t, v1));
printf("%d\n", vec_magnitude(vec2i_t, v2));
return 0;
}

206
04_codegen/vec.h
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@ -1,206 +0,0 @@
#ifndef VEC_H
#define VEC_H
#include "../aliases.h"
#include <stdio.h>
#include <math.h>
#define vec_add(T, v1, v2) vec_add_##T(v1, v2)
#define vec_sub(T, v1, v2) vec_sub_##T(v1, v2)
#define vec_mul(T, v1, v2) vec_mul_##T(v1, v2)
#define vec_dot(T, v1, v2) vec_dot_##T(v1, v2)
#define vec_magnitude(T, v1) vec_magnitude_##T(v1)
#define vec_print(T, v1) vec_print_##T(v1)
typedef struct {
i32 x;
i32 y;
} vec2i_t;
INTERNAL vec2i_t vec_add_vec2i_t(vec2i_t v1, vec2i_t v2);
INTERNAL vec2i_t vec_sub_vec2i_t(vec2i_t v1, vec2i_t v2);
INTERNAL vec2i_t vec_mul_vec2i_t(vec2i_t v1, vec2i_t v2);
INTERNAL i32 vec_dot_vec2i_t(vec2i_t v1, vec2i_t v2);
INTERNAL i32 vec_magnitude_vec2i_t(vec2i_t v1);
INTERNAL void vec_print_vec2i_t(vec2i_t v1);
#ifdef VEC_IMPLEMENTATION
INTERNAL vec2i_t vec_add_vec2i_t(vec2i_t v1, vec2i_t v2) {
return (vec2i_t) { v1.x + v2.x, v1.y + v2.y, };
}
INTERNAL vec2i_t vec_sub_vec2i_t(vec2i_t v1, vec2i_t v2) {
return (vec2i_t) { v1.x - v2.x, v1.y - v2.y, };
}
INTERNAL vec2i_t vec_mul_vec2i_t(vec2i_t v1, vec2i_t v2) {
return (vec2i_t) { v1.x * v2.x, v1.y * v2.y, };
}
INTERNAL i32 vec_dot_vec2i_t(vec2i_t v1, vec2i_t v2) {
return v1.x * v2.x + v1.y * v2.y + 0;
}
INTERNAL i32 vec_magnitude_vec2i_t(vec2i_t v1) {
i32 dotproduct = vec_dot_vec2i_t(v1, v1);
return (i32)sqrtf(dotproduct);
}
INTERNAL void vec_print_vec2i_t(vec2i_t v1) {
printf("{%d, %d}\n", v1.x, v1.y);
}
#endif // VEC_IMPLEMENTATION
typedef struct {
i32 x;
i32 y;
i32 z;
} vec3i_t;
INTERNAL vec3i_t vec_add_vec3i_t(vec3i_t v1, vec3i_t v2);
INTERNAL vec3i_t vec_sub_vec3i_t(vec3i_t v1, vec3i_t v2);
INTERNAL vec3i_t vec_mul_vec3i_t(vec3i_t v1, vec3i_t v2);
INTERNAL i32 vec_dot_vec3i_t(vec3i_t v1, vec3i_t v2);
INTERNAL i32 vec_magnitude_vec3i_t(vec3i_t v1);
INTERNAL void vec_print_vec3i_t(vec3i_t v1);
#ifdef VEC_IMPLEMENTATION
INTERNAL vec3i_t vec_add_vec3i_t(vec3i_t v1, vec3i_t v2) {
return (vec3i_t) { v1.x + v2.x, v1.y + v2.y, v1.z + v2.z, };
}
INTERNAL vec3i_t vec_sub_vec3i_t(vec3i_t v1, vec3i_t v2) {
return (vec3i_t) { v1.x - v2.x, v1.y - v2.y, v1.z - v2.z, };
}
INTERNAL vec3i_t vec_mul_vec3i_t(vec3i_t v1, vec3i_t v2) {
return (vec3i_t) { v1.x * v2.x, v1.y * v2.y, v1.z * v2.z, };
}
INTERNAL i32 vec_dot_vec3i_t(vec3i_t v1, vec3i_t v2) {
return v1.x * v2.x + v1.y * v2.y + v1.z * v2.z + 0;
}
INTERNAL i32 vec_magnitude_vec3i_t(vec3i_t v1) {
i32 dotproduct = vec_dot_vec3i_t(v1, v1);
return (i32)sqrtf(dotproduct);
}
INTERNAL void vec_print_vec3i_t(vec3i_t v1) {
printf("{%d, %d, %d}\n", v1.x, v1.y, v1.z);
}
#endif // VEC_IMPLEMENTATION
typedef struct {
f32 x;
f32 y;
} vec2f_t;
INTERNAL vec2f_t vec_add_vec2f_t(vec2f_t v1, vec2f_t v2);
INTERNAL vec2f_t vec_sub_vec2f_t(vec2f_t v1, vec2f_t v2);
INTERNAL vec2f_t vec_mul_vec2f_t(vec2f_t v1, vec2f_t v2);
INTERNAL f32 vec_dot_vec2f_t(vec2f_t v1, vec2f_t v2);
INTERNAL f32 vec_magnitude_vec2f_t(vec2f_t v1);
INTERNAL void vec_print_vec2f_t(vec2f_t v1);
#ifdef VEC_IMPLEMENTATION
INTERNAL vec2f_t vec_add_vec2f_t(vec2f_t v1, vec2f_t v2) {
return (vec2f_t) { v1.x + v2.x, v1.y + v2.y, };
}
INTERNAL vec2f_t vec_sub_vec2f_t(vec2f_t v1, vec2f_t v2) {
return (vec2f_t) { v1.x - v2.x, v1.y - v2.y, };
}
INTERNAL vec2f_t vec_mul_vec2f_t(vec2f_t v1, vec2f_t v2) {
return (vec2f_t) { v1.x * v2.x, v1.y * v2.y, };
}
INTERNAL f32 vec_dot_vec2f_t(vec2f_t v1, vec2f_t v2) {
return v1.x * v2.x + v1.y * v2.y + 0;
}
INTERNAL f32 vec_magnitude_vec2f_t(vec2f_t v1) {
f32 dotproduct = vec_dot_vec2f_t(v1, v1);
return (f32)sqrtf(dotproduct);
}
INTERNAL void vec_print_vec2f_t(vec2f_t v1) {
printf("{%f, %f}\n", v1.x, v1.y);
}
#endif // VEC_IMPLEMENTATION
typedef struct {
f32 x;
f32 y;
f32 z;
} vec3f_t;
INTERNAL vec3f_t vec_add_vec3f_t(vec3f_t v1, vec3f_t v2);
INTERNAL vec3f_t vec_sub_vec3f_t(vec3f_t v1, vec3f_t v2);
INTERNAL vec3f_t vec_mul_vec3f_t(vec3f_t v1, vec3f_t v2);
INTERNAL f32 vec_dot_vec3f_t(vec3f_t v1, vec3f_t v2);
INTERNAL f32 vec_magnitude_vec3f_t(vec3f_t v1);
INTERNAL void vec_print_vec3f_t(vec3f_t v1);
#ifdef VEC_IMPLEMENTATION
INTERNAL vec3f_t vec_add_vec3f_t(vec3f_t v1, vec3f_t v2) {
return (vec3f_t) { v1.x + v2.x, v1.y + v2.y, v1.z + v2.z, };
}
INTERNAL vec3f_t vec_sub_vec3f_t(vec3f_t v1, vec3f_t v2) {
return (vec3f_t) { v1.x - v2.x, v1.y - v2.y, v1.z - v2.z, };
}
INTERNAL vec3f_t vec_mul_vec3f_t(vec3f_t v1, vec3f_t v2) {
return (vec3f_t) { v1.x * v2.x, v1.y * v2.y, v1.z * v2.z, };
}
INTERNAL f32 vec_dot_vec3f_t(vec3f_t v1, vec3f_t v2) {
return v1.x * v2.x + v1.y * v2.y + v1.z * v2.z + 0;
}
INTERNAL f32 vec_magnitude_vec3f_t(vec3f_t v1) {
f32 dotproduct = vec_dot_vec3f_t(v1, v1);
return (f32)sqrtf(dotproduct);
}
INTERNAL void vec_print_vec3f_t(vec3f_t v1) {
printf("{%f, %f, %f}\n", v1.x, v1.y, v1.z);
}
#endif // VEC_IMPLEMENTATION
#endif // VEC_H

1
README.md
View File

@ -15,4 +15,3 @@ Exploring different ideas for implementing generics in C.
| 01_no_metaprogramming | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐ | ⭐ | | 3.00 | | 01_no_metaprogramming | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐ | ⭐ | | 3.00 |
| 02_macros | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ | | 3.17 | | 02_macros | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ | | 3.17 |
| 03_xmacros | ⭐⭐⭐ | ⭐ | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | | 2.33 | | 03_xmacros | ⭐⭐⭐ | ⭐ | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | | 2.33 |
| 04_codegen | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐ | 3.17 |

6
compile
View File

@ -7,9 +7,3 @@ LIBS="-lm"
$CC $CFLAGS -I01_no_metaprogramming ./01_no_metaprogramming/*.c $LIBS -o 01_vec_no_metaprogramming $CC $CFLAGS -I01_no_metaprogramming ./01_no_metaprogramming/*.c $LIBS -o 01_vec_no_metaprogramming
$CC $CFLAGS -I02_macros ./02_macros/*.c $LIBS -o 02_vec_macros $CC $CFLAGS -I02_macros ./02_macros/*.c $LIBS -o 02_vec_macros
$CC $CFLAGS -I03_xmacros ./03_xmacros/*.c $LIBS -o 03_vec_xmacros $CC $CFLAGS -I03_xmacros ./03_xmacros/*.c $LIBS -o 03_vec_xmacros
$CC $CFLAGS -I04_codegen -Imem_arena 04_codegen/codegen.c mem_arena/*.c -o 04_codegen/codegen
cd 04_codegen
./codegen
cd ../
$CC $CFLAGS -I04_codegen ./04_codegen/main.c $LIBS -o 04_vec_codegen

47
mem_arena/arena.c
View File

@ -1,47 +0,0 @@
#include "arena.h"
#include "../aliases.h"
#include <stdlib.h>
#include <string.h>
bool arena_init(arena_t *arena, u64 capacity) {
arena->buf = (u8 *)malloc(capacity);
if (!(arena->buf)) {
return false;
}
arena->capacity = capacity;
arena->offset = arena->buf;
return true;
}
u8 *arena_alloc(arena_t *arena, u64 size) {
if (arena->offset + size >= arena->buf + arena->capacity) {
return NULL;
}
u8 *output = arena->offset;
arena->offset += size;
return output;
}
void arena_clear(arena_t *arena) {
memset(arena->buf, 0, arena->offset - arena->buf);
arena->offset = arena->buf;
}
void arena_free(arena_t *arena) {
arena->capacity = 0;
arena->offset = NULL;
if (arena->buf) {
free(arena->buf);
}
arena->buf = NULL;
}

18
mem_arena/arena.h
View File

@ -1,18 +0,0 @@
#ifndef ARENA_H
#define ARENA_H
#include "../aliases.h"
#include <stdbool.h>
typedef struct {
u64 capacity;
u8 *buf;
u8 *offset;
} arena_t;
bool arena_init(arena_t *arena, u64 capacity);
u8 *arena_alloc(arena_t *arena, u64 size);
void arena_clear(arena_t *arena);
void arena_free(arena_t *arena);
#endif // !ARENA_H