Major fixes and new features

venv/lib/python3.12/site-packages/asyncpg/pgproto/codecs/float.pyx

@@ -0,0 +1,34 @@
+# Copyright (C) 2016-present the asyncpg authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of asyncpg and is released under
+# the Apache 2.0 License: http://www.apache.org/licenses/LICENSE-2.0
+
+
+from libc cimport math
+
+
+cdef float4_encode(CodecContext settings, WriteBuffer buf, obj):
+    cdef double dval = cpython.PyFloat_AsDouble(obj)
+    cdef float fval = <float>dval
+    if math.isinf(fval) and not math.isinf(dval):
+        raise ValueError('value out of float32 range')
+
+    buf.write_int32(4)
+    buf.write_float(fval)
+
+
+cdef float4_decode(CodecContext settings, FRBuffer *buf):
+    cdef float f = hton.unpack_float(frb_read(buf, 4))
+    return cpython.PyFloat_FromDouble(f)
+
+
+cdef float8_encode(CodecContext settings, WriteBuffer buf, obj):
+    cdef double dval = cpython.PyFloat_AsDouble(obj)
+    buf.write_int32(8)
+    buf.write_double(dval)
+
+
+cdef float8_decode(CodecContext settings, FRBuffer *buf):
+    cdef double f = hton.unpack_double(frb_read(buf, 8))
+    return cpython.PyFloat_FromDouble(f)