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5c6877b02b
The feenableexcept() and fedisableexcept() APIs are now provided which let you detect when NaNs appear the moment it happens from anywhere in your program. Tests have also been added for the mission critical math functions expf() and erff(), whose perfect operation has been assured. See examples/trapping.c to see how to use this powerful functionality.
91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
#ifndef COSMOPOLITAN_LIBC_RUNTIME_FENV_H_
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#define COSMOPOLITAN_LIBC_RUNTIME_FENV_H_
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#ifdef __x86_64__
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#define FE_INVALID 1
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#define __FE_DENORM 2
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#define FE_DIVBYZERO 4
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#define FE_OVERFLOW 8
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#define FE_UNDERFLOW 16
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#define FE_INEXACT 32
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#define FE_ALL_EXCEPT 63
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#define FE_TONEAREST 0x0000
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#define FE_DOWNWARD 0x0400
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#define FE_UPWARD 0x0800
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#define FE_TOWARDZERO 0x0c00
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#define FE_DFL_ENV ((const fenv_t *)-1)
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typedef void *fenv_t;
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typedef uint16_t fexcept_t;
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#elif defined(__aarch64__)
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#define FE_INVALID 1
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#define FE_DIVBYZERO 2
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#define FE_OVERFLOW 4
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#define FE_UNDERFLOW 8
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#define FE_INEXACT 16
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#define FE_ALL_EXCEPT 31
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#define FE_TONEAREST 0
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#define FE_DOWNWARD 0x800000
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#define FE_UPWARD 0x400000
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#define FE_TOWARDZERO 0xc00000
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#define FE_DFL_ENV ((const fenv_t *)-1)
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typedef void *fenv_t;
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typedef uint32_t fexcept_t;
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#elif defined(__powerpc64__)
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#define FE_TONEAREST 0
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#define FE_TOWARDZERO 1
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#define FE_UPWARD 2
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#define FE_DOWNWARD 3
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#define FE_INEXACT 0x02000000
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#define FE_DIVBYZERO 0x04000000
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#define FE_UNDERFLOW 0x08000000
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#define FE_OVERFLOW 0x10000000
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#define FE_INVALID 0x20000000
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#define FE_ALL_EXCEPT 0x3e000000
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#define FE_INVALID_SNAN 0x01000000
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#define FE_INVALID_ISI 0x00800000
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#define FE_INVALID_IDI 0x00400000
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#define FE_INVALID_ZDZ 0x00200000
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#define FE_INVALID_IMZ 0x00100000
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#define FE_INVALID_COMPARE 0x00080000
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#define FE_INVALID_SOFTWARE 0x00000400
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#define FE_INVALID_SQRT 0x00000200
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#define FE_INVALID_INTEGER_CONVERSION 0x00000100
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#define FE_ALL_INVALID 0x01f80700
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#define FE_DFL_ENV ((const fenv_t *)-1)
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typedef unsigned fexcept_t;
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typedef double fenv_t;
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#endif /* __x86_64__ */
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#ifdef __STDC_WANT_IEC_60559_TYPES_EXT__
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#define FLT_EVAL_METHOD __FLT_EVAL_METHOD_TS_18661_3__
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#elif defined(__FLT_EVAL_METHOD__)
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#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
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#else
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#define FLT_EVAL_METHOD 0
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#endif
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COSMOPOLITAN_C_START_
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#define FLT_ROUNDS (__flt_rounds())
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int feclearexcept(int);
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int fegetenv(fenv_t *);
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int fegetexceptflag(fexcept_t *, int);
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int fegetround(void);
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int feholdexcept(fenv_t *);
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int feraiseexcept(int);
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int fesetenv(const fenv_t *);
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int fesetexceptflag(const fexcept_t *, int);
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int fesetround(int);
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int fetestexcept(int);
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int feenableexcept(int);
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int fedisableexcept(int);
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int feupdateenv(const fenv_t *);
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int __flt_rounds(void);
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int __fesetround(int);
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_RUNTIME_FENV_H_ */
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