name: duk_to_fixed_buffer

proto: |
  void *duk_to_fixed_buffer(duk_context *ctx, duk_idx_t idx, duk_size_t *out_size);

stack: |
  [ ... val! ... ]

summary: |
  <p>Like <code><a href="#duk_to_buffer">duk_to_buffer()</a></code> but if
  the value is a dynamic or an external buffer, convert it to a fixed buffer.
  The result is thus always a fixed buffer (unless an error is thrown).</p>

example: |
  duk_size_t sz;
  void *buf = duk_to_fixed_buffer(ctx, -3, &sz);

tags:
  - stack
  - buffer

introduced: 1.0.0