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-rw-r--r--erts/emulator/test/bs_match_misc_SUITE.erl12
1 files changed, 10 insertions, 2 deletions
diff --git a/erts/emulator/test/bs_match_misc_SUITE.erl b/erts/emulator/test/bs_match_misc_SUITE.erl
index 15427661f3..b0904acbe9 100644
--- a/erts/emulator/test/bs_match_misc_SUITE.erl
+++ b/erts/emulator/test/bs_match_misc_SUITE.erl
@@ -23,7 +23,8 @@
bound_var/1,bound_tail/1,t_float/1,little_float/1,sean/1,
kenneth/1,encode_binary/1,native/1,happi/1,
size_var/1,wiger/1,x0_context/1,huge_float_field/1,
- writable_binary_matched/1,otp_7198/1,unordered_bindings/1]).
+ writable_binary_matched/1,otp_7198/1,unordered_bindings/1,
+ float_middle_endian/1]).
-include_lib("test_server/include/test_server.hrl").
@@ -33,7 +34,7 @@ all() ->
[bound_var, bound_tail, t_float, little_float, sean,
kenneth, encode_binary, native, happi, size_var, wiger,
x0_context, huge_float_field, writable_binary_matched,
- otp_7198, unordered_bindings].
+ otp_7198, unordered_bindings, float_middle_endian].
groups() ->
[].
@@ -92,6 +93,13 @@ t_float(Config) when is_list(Config) ->
ok.
+float_middle_endian(Config) when is_list(Config) ->
+ F = 9007199254740990.0, % turns to -NaN when word-swapped
+ ?line fcmp(F, match_float(<<F:64/float>>, 64, 0)),
+ ?line fcmp(F, match_float(<<1:1,F:64/float,127:7>>, 64, 1)),
+ ?line fcmp(F, match_float(<<1:13,F:64/float,127:3>>, 64, 13)),
+ ok.
+
fcmp(F1, F2) when (F1 - F2) / F2 < 0.0000001 -> ok.