Reshaping A Dynamic Array Using Function Parameters

Question

Today I found this is in an example file given to me by a company:

void mySgemm( int m, int n, int k, float alpha, float beta, float a[m][n],   float b[n][k], float c[m][k], int accelerate )

Called with:

a_cpu = malloc(..);
b_cpu = malloc(..);
c_cpu = malloc(..);
mySgemm(m, n, k, a, b, a_cpu, b_cpu, c_cpu, true);

I can't compile my own similar example, frankly I've never even seen someone take a dynamic array and shape it as such using the function parameters themselves.

Is this a legal call?

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What boggles my mind is that in the mySgemm function they access a,b,c as double arrays, so the array is essentially being reshaped!?

Answer 1

no, it's not valid c++.

i guess the formal argument declarations would pass in c99, as variadic arrays, but i'm not so sure that the actual arguments for those would be accepted