1 /* $NetBSD: fenv.h,v 1.3 2015/03/17 12:20:02 joerg Exp $ */ 2 3 /* 4 * Based on ieeefp.h written by J.T. Conklin, Apr 28, 1995 5 * Public domain. 6 */ 7 8 #ifndef _ARM_FENV_H_ 9 #define _ARM_FENV_H_ 10 11 #include <sys/cdefs.h> 12 13 #ifdef __ARM_PCS_AAPCS64 14 /* AArch64 split FPSCR into two registers FPCR and FPSR */ 15 typedef struct { 16 unsigned int __fpcr; 17 unsigned int __fpsr; 18 } fenv_t; 19 #else 20 typedef int fenv_t; /* FPSCR */ 21 #endif 22 typedef int fexcept_t; 23 24 #define FE_INVALID 0x01 /* invalid operation exception */ 25 #define FE_DIVBYZERO 0x02 /* divide-by-zero exception */ 26 #define FE_OVERFLOW 0x04 /* overflow exception */ 27 #define FE_UNDERFLOW 0x08 /* underflow exception */ 28 #define FE_INEXACT 0x10 /* imprecise (loss of precision; "inexact") */ 29 30 #define FE_ALL_EXCEPT 0x1f 31 32 #define FE_TONEAREST 0 /* round to nearest representable number */ 33 #define FE_UPWARD 1 /* round toward positive infinity */ 34 #define FE_DOWNWARD 2 /* round toward negative infinity */ 35 #define FE_TOWARDZERO 3 /* round to zero (truncate) */ 36 37 __BEGIN_DECLS 38 39 /* Default floating-point environment */ 40 extern const fenv_t __fe_dfl_env; 41 #define FE_DFL_ENV (&__fe_dfl_env) 42 43 __END_DECLS 44 45 #endif /* _ARM_FENV_H_ */ 46