user: What would the C source look like for the assembly code provided here?

```asm
<gen_brune_stf>:
  endbr64
  push   %r15
  push   %r14
  mov    %r8,%r14
  push   %r13
  mov    %ecx,%r13d
  push   %r12
  mov    %rsi,%r12
  mov    %ecx,%esi
  push   %rbp
  mov    %rdx,%rbp
  push   %rbx
  mov    %rdi,%rbx
  mov    %rdx,%rdi
  sub    $0x18,%rsp
  call   <zapit@plt>
  mov    $0x1,%edi
  call   <exp@plt>
  movss  (%r12),%xmm1
  pxor   %xmm3,%xmm3
  movss  (%r14),%xmm2
  cvtss2sd %xmm0,%xmm0
  mulsd  D13(%rip),%xmm0
  cvtss2sd %xmm1,%xmm3
  mulsd  %xmm3,%xmm0
  cvtsd2ss %xmm0,%xmm0
  mulss  D17(%rip),%xmm0
  divss  %xmm2,%xmm0
  cvtss2sd %xmm0,%xmm0
  addsd  D18(%rip),%xmm0
  cvttsd2si %xmm0,%r12d
  cmp    %r13d,%r12d
  cmovg  %r13d,%r12d
  test   %r12d,%r12d
  je     L87
  movss  (%rbx),%xmm0
  divss  %xmm1,%xmm2
  divss  %xmm1,%xmm0
  movss  %xmm2,0xc(%rsp)
  movss  %xmm0,0x8(%rsp)
  jle    L87
  lea    -0x1(%r12),%r15d
  mov    %r12d,%r13d
  xor    %ebx,%ebx
  nopl   0x0(%rax)
L32:
  pxor   %xmm0,%xmm0
  movss  0xc(%rsp),%xmm6
  mov    %ebx,%eax
  cvtsi2ss %ebx,%xmm0
  neg    %eax
  mulss  %xmm6,%xmm0
  mulss  0x8(%rsp),%xmm0
  movss  %xmm0,0x4(%rsp)
  pxor   %xmm0,%xmm0
  cvtsi2ss %eax,%xmm0
  mulss  %xmm6,%xmm0
  cvttss2si %xmm0,%edi
  call   <exp@plt>
  mulss  0x4(%rsp),%xmm0
  movss  %xmm0,0x0(%rbp,%rbx,4)
  add    $0x1,%rbx
  cmp    %r13,%rbx
  jne    L32
  movss  (%r14),%xmm4
  cmp    $0x2,%r15d
  jbe    L9
  mov    %r12d,%edx
  pxor   %xmm5,%xmm5
  movaps %xmm4,%xmm3
  mov    %rbp,%rax
  shr    $0x2,%edx
  movaps %xmm5,%xmm1
  shufps $0x0,%xmm3,%xmm3
  sub    $0x1,%edx
  shl    $0x4,%rdx
  lea    0x10(%rbp,%rdx,1),%rdx
  cs nopw 0x0(%rax,%rax,1)
L77:
  movups (%rax),%xmm0
  add    $0x10,%rax
  mulps  %xmm3,%xmm0
  addss  %xmm0,%xmm1
  movaps %xmm0,%xmm2
  shufps $0x55,%xmm0,%xmm2
  addss  %xmm2,%xmm1
  movaps %xmm0,%xmm2
  unpckhps %xmm0,%xmm2
  shufps $0xff,%xmm0,%xmm0
  addss  %xmm2,%xmm1
  addss  %xmm0,%xmm1
  cmp    %rdx,%rax
  jne    L77
  mov    %r12d,%eax
  and    $0xfffffffc,%eax
  test   $0x3,%r12b
  je     L98
L104:
  movslq %eax,%rdx
  movss  0x0(%rbp,%rdx,4),%xmm0
  lea    0x0(,%rdx,4),%rcx
  lea    0x1(%rax),%edx
  mulss  %xmm4,%xmm0
  addss  %xmm0,%xmm1
  cmp    %edx,%r12d
  jle    L98
  movss  0x4(%rbp,%rcx,1),%xmm0
  add    $0x2,%eax
  mulss  %xmm4,%xmm0
  addss  %xmm0,%xmm1
  cmp    %eax,%r12d
  jle    L98
  mulss  0x8(%rbp,%rcx,1),%xmm4
  addss  %xmm4,%xmm1
L98:
  comiss %xmm1,%xmm5
  jae    L87
L10:
  add    $0x18,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L87:
  xor    %r12d,%r12d
  jmp    L10
L9:
  pxor   %xmm5,%xmm5
  xor    %eax,%eax
  movaps %xmm5,%xmm1
  jmp    L104
```

tool_calls: name: retrieve_data
arguments: label: D13
type: f64
name: retrieve_data
arguments: label: D17
type: f32
name: retrieve_data
arguments: label: D18
type: f64

tool: D13: 1.745

tool: D17: 3

tool: D18: 0.5

assistant: ```c
int gen_brune_stf(float *slip, float *t0, float *stf, int nt, float *dt) {
  int it, nstf;
  float t95, tend, sfac, tfac;
  float sum;
  zapit(stf, nt);
  t95 = 1.745 * exp(1.0) * (*t0);
  tend = 3.0 * t95;
  nstf = (int)((tend) / (*dt) + 0.5);
  if (nstf > nt)
    nstf = nt;
  if (nstf == 0)
    return (0);
  sfac = (*slip) / (*t0);
  tfac = (*dt) / (*t0);
  for (it = 0; it < nstf; it++)
    stf[it] = sfac * (it * tfac) * exp(-it * tfac);
  sum = 0.0;
  for (it = 0; it < nstf; it++)
    sum = sum + (*dt) * stf[it];
  if (sum <= 0.0)
    return (0);
  return (nstf);
}
```