gcc-4.8.3/libquadmath/math/nanq.c


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#include "quadmath-imp.h"

__float128
nanq (const char *tagp __attribute__ ((unused)))
{
  // FIXME -- we should use the argument
  ieee854_float128 f;
  f.ieee.exponent = 0x7fff;
  f.ieee.mant_high = 0x1;
  return f.value;
}