user: Please show me the C implementation that matches the assembly code listed below:

```asm
<f1>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x78,%rsp
  mov    %edi,-0x74(%rbp)
  mov    %esi,-0x78(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  mov    %rsp,%rax
  mov    %rax,-0x80(%rbp)
  mov    -0x78(%rbp),%esi
  mov    -0x74(%rbp),%edi
  movslq %esi,%rax
  sub    $0x1,%rax
  mov    %rax,-0x60(%rbp)
  movslq %esi,%rax
  mov    %rax,%rcx
  mov    $0x0,%ebx
  movslq %esi,%rax
  lea    0x0(,%rax,4),%rbx
  movslq %edi,%rax
  sub    $0x1,%rax
  mov    %rax,-0x58(%rbp)
  movslq %esi,%rax
  mov    %rax,%r14
  mov    $0x0,%r15d
  movslq %edi,%rax
  mov    %rax,%r12
  mov    $0x0,%r13d
  mov    %r15,%rdx
  imul   %r12,%rdx
  mov    %r13,%rax
  imul   %r14,%rax
  lea    (%rdx,%rax,1),%rcx
  mov    %r14,%rax
  mul    %r12
  add    %rdx,%rcx
  mov    %rcx,%rdx
  movslq %esi,%rax
  mov    %rax,%r10
  mov    $0x0,%r11d
  movslq %edi,%rax
  mov    %rax,%r8
  mov    $0x0,%r9d
  mov    %r11,%rdx
  imul   %r8,%rdx
  mov    %r9,%rax
  imul   %r10,%rax
  lea    (%rdx,%rax,1),%rcx
  mov    %r10,%rax
  mul    %r8
  add    %rdx,%rcx
  mov    %rcx,%rdx
  movslq %esi,%rdx
  movslq %edi,%rax
  imul   %rdx,%rax
  lea    0x0(,%rax,4),%rdx
  mov    $0x10,%eax
  sub    $0x1,%rax
  add    %rdx,%rax
  mov    $0x10,%edi
  mov    $0x0,%edx
  div    %rdi
  imul   $0x10,%rax,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rcx
  mov    %rsp,%rdx
  sub    %rcx,%rdx
L86:
  cmp    %rdx,%rsp
  je     L1
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L86
L1:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L49
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L49:
  mov    %rsp,%rax
  add    $0x3,%rax
  shr    $0x2,%rax
  shl    $0x2,%rax
  mov    %rax,-0x50(%rbp)
  mov    -0x78(%rbp),%ecx
  movslq %ecx,%rax
  sub    $0x1,%rax
  mov    %rax,-0x48(%rbp)
  movslq %ecx,%rax
  mov    %rax,-0x90(%rbp)
  movq   $0x0,-0x88(%rbp)
  movslq %ecx,%rax
  mov    %rax,-0xa0(%rbp)
  movq   $0x0,-0x98(%rbp)
  movslq %ecx,%rax
  lea    0x0(,%rax,4),%rdx
  mov    $0x10,%eax
  sub    $0x1,%rax
  add    %rdx,%rax
  mov    $0x10,%edi
  mov    $0x0,%edx
  div    %rdi
  imul   $0x10,%rax,%rax
  mov    %rax,%rsi
  and    $0xfffffffffffff000,%rsi
  mov    %rsp,%rdx
  sub    %rsi,%rdx
L20:
  cmp    %rdx,%rsp
  je     L44
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L20
L44:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L36
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L36:
  mov    %rsp,%rax
  add    $0x3,%rax
  shr    $0x2,%rax
  shl    $0x2,%rax
  mov    %rax,-0x40(%rbp)
  movslq %ecx,%rax
  shl    $0x2,%eax
  mov    %eax,%edx
  mov    -0x40(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  movl   $0x0,-0x64(%rbp)
  jmp    L10
L13:
  mov    %rbx,%rdx
  shr    $0x2,%rdx
  mov    -0x64(%rbp),%eax
  cltq
  imul   %rdx,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x50(%rbp),%rax
  add    %rax,%rdx
  mov    -0x40(%rbp),%rcx
  mov    -0x78(%rbp),%eax
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <add_vec@plt>
  addl   $0x1,-0x64(%rbp)
L10:
  mov    -0x64(%rbp),%eax
  cmp    -0x74(%rbp),%eax
  jl     L13
  mov    -0x80(%rbp),%rsp
  nop
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L85
  call   <__stack_chk_fail@plt>
L85:
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
```

assistant: ```c
void f1(int num_vectors, int vector_size) {
  float array_of_vec[num_vectors][vector_size];
  float vec_sum[vector_size];
  memset(vec_sum, 0, sizeof(vec_sum));
  int i;
#pragma omp parallel for reduction(add_vec : vec_sum)
  for (i = 0; i < num_vectors; i++) {
    add_vec(vector_size, &vec_sum[0], &array_of_vec[i][0]);
  }
}
```