#ifndef NUMPY_CORE_INCLUDE_NUMPY_HALFFLOAT_H_ #define NUMPY_CORE_INCLUDE_NUMPY_HALFFLOAT_H_ #include #include #ifdef __cplusplus extern "C" { #endif /* * Half-precision routines */ /* Conversions */ float npy_half_to_float(npy_half h); double npy_half_to_double(npy_half h); npy_half npy_float_to_half(float f); npy_half npy_double_to_half(double d); /* Comparisons */ int npy_half_eq(npy_half h1, npy_half h2); int npy_half_ne(npy_half h1, npy_half h2); int npy_half_le(npy_half h1, npy_half h2); int npy_half_lt(npy_half h1, npy_half h2); int npy_half_ge(npy_half h1, npy_half h2); int npy_half_gt(npy_half h1, npy_half h2); /* faster *_nonan variants for when you know h1 and h2 are not NaN */ int npy_half_eq_nonan(npy_half h1, npy_half h2); int npy_half_lt_nonan(npy_half h1, npy_half h2); int npy_half_le_nonan(npy_half h1, npy_half h2); /* Miscellaneous functions */ int npy_half_iszero(npy_half h); int npy_half_isnan(npy_half h); int npy_half_isinf(npy_half h); int npy_half_isfinite(npy_half h); int npy_half_signbit(npy_half h); npy_half npy_half_copysign(npy_half x, npy_half y); npy_half npy_half_spacing(npy_half h); npy_half npy_half_nextafter(npy_half x, npy_half y); npy_half npy_half_divmod(npy_half x, npy_half y, npy_half *modulus); /* * Half-precision constants */ #define NPY_HALF_ZERO (0x0000u) #define NPY_HALF_PZERO (0x0000u) #define NPY_HALF_NZERO (0x8000u) #define NPY_HALF_ONE (0x3c00u) #define NPY_HALF_NEGONE (0xbc00u) #define NPY_HALF_PINF (0x7c00u) #define NPY_HALF_NINF (0xfc00u) #define NPY_HALF_NAN (0x7e00u) #define NPY_MAX_HALF (0x7bffu) /* * Bit-level conversions */ npy_uint16 npy_floatbits_to_halfbits(npy_uint32 f); npy_uint16 npy_doublebits_to_halfbits(npy_uint64 d); npy_uint32 npy_halfbits_to_floatbits(npy_uint16 h); npy_uint64 npy_halfbits_to_doublebits(npy_uint16 h); #ifdef __cplusplus } #endif #endif /* NUMPY_CORE_INCLUDE_NUMPY_HALFFLOAT_H_ */