shithub: sl

ref: b578f6fc6c2d7b99c42e6477e0fe8a86a0666e03
dir: /nan.h/

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#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);