code: def prevbefore(x: Array) -> Array:
      """Returns the floating point number before `x`."""
      y = jnp.nextafter(x, -jnp.inf)
      return jnp.where(x == 0, -jnp.finfo(x.dtype).tiny, y)
  
imports: import jax
  import jax.numpy
  from jaxtyping import Array
label_desc: Use image node_id 3 for calling a global function with example usage: prevbefore(x) and returns: jnp