+
+# CHECK: .long 1310177520
+.float 0x12f7.1ep+17
+# CHECK: .long 1084227584
+.float 0x.ap+3
+# CHECK: .quad 4602678819172646912
+.double 0x2.p-2
+# CHECK: .long 1094713344
+.float 0x3p2
+# CHECK: .long 872284160
+.float 0x7fp-30
+# CHECK: .long 3212836864
+.float -0x1.0p0
+
+# CHECK-ERROR: invalid hexadecimal floating-point constant: expected at least one exponent digit
+# CHECK-ERROR: unexpected token in directive
+.float 0xa.apa
+
+# CHECK-ERROR: invalid hexadecimal floating-point constant: expected at least one exponent digit
+# CHECK-ERROR: unexpected token in directive
+.double -0x1.2p+
+
+# CHECK-ERROR: invalid hexadecimal floating-point constant: expected at least one exponent digit
+# CHECK-ERROR: unexpected token in directive
+.double -0x1.2p
+
+# CHECK-ERROR: invalid hexadecimal floating-point constant: expected at least one significand digit
+# CHECK-ERROR: unexpected token in directive
+.float 0xp2
+
+# CHECK-ERROR: invalid hexadecimal floating-point constant: expected at least one significand digit
+# CHECK-ERROR: unexpected token in directive
+.float 0x.p5
+
+# CHECK-ERROR: error: invalid hexadecimal floating-point constant: expected exponent part 'p'
+# CHECK-ERROR: unexpected token in directive
+.float 0x1.2