C00kiie · September 4, 2025 09:12
diff --git a/factorial-c-macro.c b/factorial-c-macro.c
 #include <stdio.h>


 // i was playing with macros a bit, and thought it's a bit funny to make the preprocessor do the math instead of 
 // the actual source code
 // ironically, this will insert the factorial(x) value directly as a number in assembly
 // you can take a look in the second main.asm file

 #define init(x) ((x) == 1 ? 1 : (x) * step((x)-1))
 #define step(x) ((x)*(x-1))
 #define factorial(x) init((x)+1)

 int main(){
 int res = factorial(5);
 printf("%d",res);
 return 0;
 }
diff --git a/main.asm b/main.asm
 .LC0:
        .string "%d"
 main:
        push    rbp
        mov     rbp, rsp
        sub     rsp, 16
        mov     DWORD PTR [rbp-4], 120
        mov     eax, DWORD PTR [rbp-4]
        mov     esi, eax
        mov     edi, OFFSET FLAT:.LC0
        mov     eax, 0
        call    printf
        mov     eax, 0
        leave
        ret
	#include <stdio.h>


	// i was playing with macros a bit, and thought it's a bit funny to make the preprocessor do the math instead of
	// the actual source code
	// ironically, this will insert the factorial(x) value directly as a number in assembly
	// you can take a look in the second main.asm file

	#define init(x) ((x) == 1 ? 1 : (x) * step((x)-1))
	#define step(x) ((x)*(x-1))
	#define factorial(x) init((x)+1)

	int main(){
	int res = factorial(5);
	printf("%d",res);
	return 0;
	}
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