Kernel/userspace: rework floating point math
SSE is now unconditionally enabled any where and most of math.h is now actually implemented. using __builtin_<func> lead to many hangs where the builtin function would just call itself.
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@@ -7,7 +7,46 @@
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__BEGIN_DECLS
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// FIXME
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#include <stdint.h>
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#define FE_INVALID (1 << 0)
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#define FE_DIVBYZERO (1 << 2)
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#define FE_OVERFLOW (1 << 3)
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#define FE_UNDERFLOW (1 << 4)
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#define FE_INEXACT (1 << 5)
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#define FE_ALL_EXCEPT (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT)
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#define FE_TONEAREST 0
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#define FE_DOWNWARD 1
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#define FE_UPWARD 2
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#define FE_TOWARDZERO 3
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typedef struct {
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uint32_t control;
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uint32_t status;
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uint32_t __unused[5];
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} __x87_fpu_t;
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typedef struct {
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__x87_fpu_t x87_fpu;
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uint32_t mxcsr;
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} fenv_t;
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typedef uint8_t fexcept_t;
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#define FE_DFL_ENV ((const fenv_t*)0x1)
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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 feupdateenv(const fenv_t*);
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__END_DECLS
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@@ -5,6 +5,8 @@
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#include <sys/cdefs.h>
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#include <float.h>
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__BEGIN_DECLS
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#ifndef FLT_EVAL_METHOD
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@@ -22,52 +24,50 @@ __BEGIN_DECLS
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typedef long double double_t;
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#endif
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// FIXME: define this
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// int fpclassify(real-floating x);
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#define fpclassify(x) __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL, FP_ZERO, x)
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#define isfinite(x) __builtin_isfinite(x)
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#define isgreater(x, y) __builtin_isgreater(x, y)
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#define isgreaterequal(x, y) __builtin_isgreaterequal(x, y)
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#define isinf(x) __builtin_isinf_sign(x)
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#define isless(x, y) __builtin_isless(x, y)
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#define islessequal(x, y) __builtin_islessequal(x, y)
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#define islessgreater(x, y) __builtin_islessgreater(x, y)
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#define isnan(x) __builtin_isnan(x)
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#define isnormal(x) __builtin_isnormal(x)
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#define isunordered(x, y) __builtin_isunordered(x, y)
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#define signbit(x) __builtin_signbit(x)
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#define isfinite(x) __builtin_isfinite(x)
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#define isgreater(x, y) __builtin_isgreater(x, y)
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#define isgreaterequal(x, y) __builtin_isgreaterequal(x, y)
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#define isinf(x) __builtin_isinf_sign(x)
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#define isless(x, y) __builtin_isless(x, y)
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#define islessequal(x, y) __builtin_islessequal(x, y)
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#define islessgreater(x, y) __builtin_islessgreater(x, y)
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#define isnan(x) __builtin_isnan(x)
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#define isnormal(x) __builtin_isnormal(x)
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#define isunordered(x, y) __builtin_isunordered(x, y)
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#define signbit(x) __builtin_signbit(x)
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#define M_E 2.7182818284590452354
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#define M_LOG2E 1.4426950408889634074
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#define M_LOG10E 0.43429448190325182765
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#define M_LN2 0.69314718055994530942
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#define M_LN10 2.30258509299404568402
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#define M_PI 3.14159265358979323846
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#define M_PI_2 1.57079632679489661923
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#define M_PI_4 0.78539816339744830962
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#define M_1_PI 0.31830988618379067154
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#define M_2_PI 0.63661977236758134308
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#define M_2_SQRTPI 1.12837916709551257390
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#define M_SQRT2 1.41421356237309504880
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#define M_SQRT1_2 0.70710678118654752440
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#define M_E 2.7182818284590452354
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#define M_LOG2E 1.4426950408889634074
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#define M_LOG10E 0.43429448190325182765
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#define M_LN2 0.69314718055994530942
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#define M_LN10 2.30258509299404568402
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#define M_PI 3.14159265358979323846
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#define M_PI_2 1.57079632679489661923
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#define M_PI_4 0.78539816339744830962
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#define M_1_PI 0.31830988618379067154
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#define M_2_PI 0.63661977236758134308
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#define M_2_SQRTPI 1.12837916709551257390
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#define M_SQRT2 1.41421356237309504880
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#define M_SQRT1_2 0.70710678118654752440
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#define HUGE_VAL __builtin_huge_val()
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#define HUGE_VALF __builtin_huge_valf()
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#define HUGE_VALL __builtin_huge_vall()
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#define INFINITY __builtin_inff()
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#define NAN __builtin_nanf("")
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#define HUGE_VAL __builtin_huge_val()
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#define HUGE_VALF __builtin_huge_valf()
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#define HUGE_VALL __builtin_huge_vall()
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#define INFINITY __builtin_inff()
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#define NAN __builtin_nanf("")
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#define FP_INFINITE 0
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#define FP_NAN 1
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#define FP_NORMAL 2
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#define FP_SUBNORMAL 3
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#define FP_ZERO 4
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#define FP_INFINITE 0
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#define FP_NAN 1
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#define FP_NORMAL 2
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#define FP_SUBNORMAL 3
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#define FP_ZERO 4
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#define FP_ILOGB0 -2147483647
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#define FP_ILOGBNAN +2147483647
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#define FP_ILOGB0 -2147483647
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#define FP_ILOGBNAN +2147483647
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#define MATH_ERRNO 1
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#define MATH_ERREXCEPT 2
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#define MATH_ERRNO 1
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#define MATH_ERREXCEPT 2
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#define math_errhandling (MATH_ERRNO | MATH_ERREXCEPT)
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@@ -191,9 +191,9 @@ long lroundl(long double);
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double modf(double, double*);
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float modff(float, float*);
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long double modfl(long double, long double*);
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double nan(const char*);
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float nanf(const char*);
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long double nanl(const char*);
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#define nan(tagp) __builtin_nan(tagp)
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#define nanf(tagp) __builtin_nanf(tagp)
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#define nanl(tagp) __builtin_nanl(tagp)
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double nearbyint(double);
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float nearbyintf(float);
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long double nearbyintl(long double);
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