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| author | Sverker Eriksson <[email protected]> | 2011-11-15 12:29:11 +0100 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2011-11-17 14:16:17 +0100 |
| commit | 1870ee5b2532f3b1c4a30eaf9658875326d8dc9f (patch) | |
| tree | e6912c83352eff622236c7c847fb750bd5a997bd | |
| parent | c0b6c30a98c154a1ea190dd930b53dc4f155e67b (diff) | |
| download | otp-1870ee5b2532f3b1c4a30eaf9658875326d8dc9f.tar.gz otp-1870ee5b2532f3b1c4a30eaf9658875326d8dc9f.tar.bz2 otp-1870ee5b2532f3b1c4a30eaf9658875326d8dc9f.zip | |
erts: Add test for inf/NaN intermediate float results
Make sure that badarith is thrown even if end result is not inf/NaN
| -rw-r--r-- | erts/emulator/test/float_SUITE.erl | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/erts/emulator/test/float_SUITE.erl b/erts/emulator/test/float_SUITE.erl index 46466427c5..8e6923ce9f 100644 --- a/erts/emulator/test/float_SUITE.erl +++ b/erts/emulator/test/float_SUITE.erl @@ -27,6 +27,7 @@ fpe/1,fp_drv/1,fp_drv_thread/1,denormalized/1,match/1, bad_float_unpack/1,cmp_zero/1, cmp_integer/1, cmp_bignum/1]). -export([otp_7178/1]). +-export([hidden_inf/1]). init_per_testcase(Func, Config) when is_atom(Func), is_list(Config) -> @@ -41,7 +42,9 @@ suite() -> [{ct_hooks,[ts_install_cth]}]. all() -> [fpe, fp_drv, fp_drv_thread, otp_7178, denormalized, - match, bad_float_unpack, {group, comparison}]. + match, bad_float_unpack, {group, comparison} + ,hidden_inf + ]. groups() -> [{comparison, [parallel], [cmp_zero, cmp_integer, cmp_bignum]}]. @@ -300,3 +303,25 @@ start_node(Config) when is_list(Config) -> stop_node(Node) -> ?t:stop_node(Node). + + +%% Test that operations that might hide infinite intermediate results +%% do not supress the badarith. +hidden_inf(Config) when is_list(Config) -> + ZeroP = 0.0, + ZeroN = id(ZeroP) * (-1), + [hidden_inf_1(A, B, Z, 9.23e307) + || A <- [1.0, -1.0, 3.1415, -0.00001000131, 3.57e257, ZeroP, ZeroN], + B <- [1.0, -1.0, 3.1415, -0.00001000131, 3.57e257, ZeroP, ZeroN], + Z <- [ZeroP, ZeroN]], + ok. + +hidden_inf_1(A, B, Zero, Huge) -> + {'EXIT',{badarith,_}} = (catch (B / (A / Zero))), + {'EXIT',{badarith,_}} = (catch (B * (A / Zero))), + {'EXIT',{badarith,_}} = (catch (B / (Huge * Huge))), + {'EXIT',{badarith,_}} = (catch (B * (Huge * Huge))), + {'EXIT',{badarith,_}} = (catch (B / (Huge + Huge))), + {'EXIT',{badarith,_}} = (catch (B * (Huge + Huge))), + {'EXIT',{badarith,_}} = (catch (B / (-Huge - Huge))), + {'EXIT',{badarith,_}} = (catch (B * (-Huge - Huge))). |