How can handmade.cpp use math.sin() and typedef ?

Long story short, making my clean-up to get close to Casys code I can´t build any more since I removed all typedef from myhandmadegame.h and put then all in the Win32 platform layer.

#include <math.h>
#include <stdint.h>

#define internal static 
#define local_persist static 
#define global_variable static

#define Pi32 3.14159265359f

typedef int8_t int8;
typedef int16_t int16;
typedef int32_t int32;
typedef int64_t int64;
typedef int32 bool32;

typedef uint8_t uint8;
typedef uint16_t uint16;
typedef uint32_t uint32;
typedef uint64_t uint64;

typedef float real32;
typedef double real64;

All of the above used to be in the general.h which was included in all .cpp files.

I saw that in his code he only define them in the platform layer.

What am I missing?

Edited...

Well, I fixed it putting

1
2
3

#include<windows.h>
//before
#include<handmade.cpp>

However, that is not how the original code is layed out.