TRIO_SIGNALLING_NAN  590 third_party/libxml/src/trionan.c #  define TRIO_SIGNALLING_NAN FP_SNAN
TRIO_SIGNALLING_NAN  607 third_party/libxml/src/trionan.c #  define TRIO_SIGNALLING_NAN _FPCLASS_SNAN
TRIO_SIGNALLING_NAN  635 third_party/libxml/src/trionan.c #  define TRIO_SIGNALLING_NAN FP_SNAN