define: DUK_USE_REPL_ISNAN
introduced: 1.0.0
default: false
tags:
  - portability
description: >
  Provide a built-in replacement for isnan(), duk_repl_isnan.

  When enabled, define DUK_ISNAN as duk_repl_isnan.

# XXX: the dependency between DUK_USE_REPL_ISNAN and DUK_ISNAN
# is a bit awkward.