C two dimensional array segmentation fault

[FakezZ]

So I have a header file where I declare this: double **mem. Then in the C file where the function definitions are I have the following code which initializes the array.

int initMem(int x, int y){
    int i, j;
    mem = malloc(sizeof(double*) * x);
    if(mem = NULL){
        printf("Not enough memory\n");
        return 1;
    }
    for(i = 0; i < x; i++){
        mem[i] = malloc(sizeof(double) * y);
        if(mem[i] == NULL){
            printf("Not enough memory\n");
            return 1;
        }
    }
    for(i = 0; i < x; i++){
        for(j = 0; j < y; j++){
            mem[x][y] = -1;
        }
    }
    return 0;
}

The segmentation fault happens as soon as the first for loop starts in the first line. The function is called in main. What could be the cause of it?

[Mr_KoKa]

You are assigning NULL to mem instead comparing it against NULL in the first if. The whole if condition evaluates to NULL so it is not fulfilled and doesn't return 1.

[FakezZ]

1 minute ago, Mr_KoKa said:

You are assigning NULL to mem instead comparing it against NULL in the first if. The whole if condition evaluates to NULL so it is not fulfilled and doesn't return 1.

omg i am stupid... Thanks I pulled an almost all nighter trying to debug this