From: Luke Kenneth Casson Leighton Date: Wed, 17 Jul 2019 08:18:13 +0000 (+0100) Subject: add u/i-32/64 <-> f16/32/64 conversion routines X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2803ccc9ab68e097d2f1031663a0c2f5bb77c2a5;p=sfpy.git add u/i-32/64 <-> f16/32/64 conversion routines uses softfloat rounding mode (where approriate), sets "exact" mode to True Signed-off-by: Luke Kenneth Casson Leighton --- diff --git a/sfpy/float.pyx b/sfpy/float.pyx index 3c1244e..7367696 100644 --- a/sfpy/float.pyx +++ b/sfpy/float.pyx @@ -676,6 +676,129 @@ cdef class Float32: cdef cfloat.float64_t f = cfloat.f32_to_f64(self._c_float) return Float64.from_c_float(f) +######## +# integer conversions +######## + +# u/i32 <-> f16 + +cpdef Float16 i32_to_f16(int32_t value): + cdef cfloat.float16_t f = cfloat.i32_to_f16(value) + return Float16.from_c_float(f) + +cpdef Float16 ui32_to_f16(uint32_t value): + cdef cfloat.float16_t f = cfloat.ui32_to_f16(value) + return Float16.from_c_float(f) + +cpdef uint32_t f16_to_ui32(Float16 a1): + cdef uint32_t i = cfloat.f16_to_ui32(a1._c_float, + cfloat.softfloat_roundingMode, True) + return i + +cpdef int32_t f16_to_i32(Float16 a1): + cdef int32_t i = cfloat.f16_to_i32(a1._c_float, + cfloat.softfloat_roundingMode, True) + return i + +# u/i32 <-> f32 + +cpdef Float32 i32_to_f32(int32_t value): + cdef cfloat.float32_t f = cfloat.i32_to_f32(value) + return Float32.from_c_float(f) + +cpdef Float32 ui32_to_f32(uint32_t value): + cdef cfloat.float32_t f = cfloat.ui32_to_f32(value) + return Float32.from_c_float(f) + +cpdef uint32_t f32_to_ui32(Float32 a1): + cdef uint32_t i = cfloat.f32_to_ui32(a1._c_float, + cfloat.softfloat_roundingMode, True) + return i + +cpdef int32_t f32_to_i32(Float32 a1): + cdef int32_t i = cfloat.f32_to_i32(a1._c_float, + cfloat.softfloat_roundingMode, True) + return i + +# u/i32 <-> f64 + +cpdef Float64 i32_to_f64(int32_t value): + cdef cfloat.float64_t f = cfloat.i32_to_f64(value) + return Float64.from_c_float(f) + +cpdef Float64 ui32_to_f64(uint32_t value): + cdef cfloat.float64_t f = cfloat.ui32_to_f64(value) + return Float64.from_c_float(f) + +cpdef uint32_t f64_to_ui32(Float64 a1): + cdef uint32_t i = cfloat.f64_to_ui32(a1._c_float, + cfloat.softfloat_roundingMode, True) + return i + +cpdef int32_t f64_to_i32(Float64 a1): + cdef int32_t i = cfloat.f64_to_i32(a1._c_float, + cfloat.softfloat_roundingMode, True) + return i + +# u/i64 <-> f16 + +cpdef Float16 i64_to_f16(int32_t value): + cdef cfloat.float16_t f = cfloat.i64_to_f16(value) + return Float16.from_c_float(f) + +cpdef Float16 ui64_to_f16(uint32_t value): + cdef cfloat.float16_t f = cfloat.ui64_to_f16(value) + return Float16.from_c_float(f) + +cpdef uint32_t f16_to_ui64(Float16 a1): + cdef uint32_t i = cfloat.f16_to_ui64(a1._c_float, + cfloat.softfloat_roundingMode, True) + return i + +cpdef int32_t f16_to_i64(Float16 a1): + cdef int32_t i = cfloat.f16_to_i64(a1._c_float, + cfloat.softfloat_roundingMode, True) + return i + +# u/i64 <-> f32 + +cpdef Float32 i64_to_f32(int32_t value): + cdef cfloat.float32_t f = cfloat.i64_to_f32(value) + return Float32.from_c_float(f) + +cpdef Float32 ui64_to_f32(uint32_t value): + cdef cfloat.float32_t f = cfloat.ui64_to_f32(value) + return Float32.from_c_float(f) + +cpdef uint32_t f32_to_ui64(Float32 a1): + cdef uint32_t i = cfloat.f32_to_ui64(a1._c_float, + cfloat.softfloat_roundingMode, True) + return i + +cpdef int32_t f32_to_i64(Float32 a1): + cdef int32_t i = cfloat.f32_to_i64(a1._c_float, + cfloat.softfloat_roundingMode, True) + return i + +# u/i64 <-> f64 + +cpdef Float64 i64_to_f64(int64_t value): + cdef cfloat.float64_t f = cfloat.i64_to_f64(value) + return Float64.from_c_float(f) + +cpdef Float64 ui64_to_f64(uint64_t value): + cdef cfloat.float64_t f = cfloat.ui64_to_f64(value) + return Float64.from_c_float(f) + +cpdef uint64_t f64_to_ui64(Float64 a1): + cdef uint64_t i = cfloat.f64_to_ui64(a1._c_float, + cfloat.softfloat_roundingMode, True) + return i + +cpdef int64_t f64_to_i64(Float64 a1): + cdef int64_t i = cfloat.f64_to_i64(a1._c_float, + cfloat.softfloat_roundingMode, True) + return i # external, non-method arithmetic