ref: bbfee60f6716dce8cf7a802c044cf7d0fe8bb6f2
dir: /src/nan.h/
#pragma once #if defined(__plan9__) extern double D_PNAN, D_PINF; #else #define D_PNAN __builtin_nan("") #define D_PINF __builtin_inf() #endif extern double D_NNAN, D_NINF; void nan_init(void);