diff options
| author | Björn-Egil Dahlberg <egil@erlang.org> | 2015-05-06 15:17:18 +0200 |
|---|---|---|
| committer | Björn-Egil Dahlberg <egil@erlang.org> | 2015-05-06 15:17:18 +0200 |
| commit | 889dbf81def0986e4569841d64a7f3882808ee07 (patch) | |
| tree | 686df2eaa37515d315a89372d0915e8afcaa43e0 /erts/emulator/beam/utils.c | |
| parent | dcffa010ef304c4dbb2e830103b7ca87fb7b62b0 (diff) | |
| download | erlang-889dbf81def0986e4569841d64a7f3882808ee07.tar.gz | |
erts: Don't let the compiler optimize pos. zero fix
Diffstat (limited to 'erts/emulator/beam/utils.c')
| -rw-r--r-- | erts/emulator/beam/utils.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/erts/emulator/beam/utils.c b/erts/emulator/beam/utils.c index 8f6335d5dd..51de3528be 100644 --- a/erts/emulator/beam/utils.c +++ b/erts/emulator/beam/utils.c @@ -958,7 +958,8 @@ tail_recur: FloatDef ff; GET_DOUBLE(term, ff); if (ff.fd == 0.0f) { - ff.fd = 0.0f; /* ensure pos. 0.0 */ + /* ensure positive 0.0 */ + ff.fd = erts_get_positive_zero_float(); } hash = hash*FUNNY_NUMBER6 + (ff.fw[0] ^ ff.fw[1]); break; @@ -1477,7 +1478,8 @@ make_hash2(Eterm term) FloatDef ff; GET_DOUBLE(term, ff); if (ff.fd == 0.0f) { - ff.fd = 0.0f; /* ensure pos. 0.0 */ + /* ensure positive 0.0 */ + ff.fd = erts_get_positive_zero_float(); } #if defined(WORDS_BIGENDIAN) || defined(DOUBLE_MIDDLE_ENDIAN) UINT32_HASH_2(ff.fw[0], ff.fw[1], HCONST_12); @@ -1899,7 +1901,8 @@ make_internal_hash(Eterm term) FloatDef ff; GET_DOUBLE(term, ff); if (ff.fd == 0.0f) { - ff.fd = 0.0f; /* ensure pos. 0.0 */ + /* ensure positive 0.0 */ + ff.fd = erts_get_positive_zero_float(); } UINT32_HASH_2(ff.fw[0], ff.fw[1], HCONST_12); goto pop_next; @@ -2087,7 +2090,8 @@ tail_recur: FloatDef ff; GET_DOUBLE(term, ff); if (ff.fd == 0.0f) { - ff.fd = 0.0f; /* ensure pos. 0.0 */ + /* ensure positive 0.0 */ + ff.fd = erts_get_positive_zero_float(); } hash = hash*FUNNY_NUMBER6 + (ff.fw[0] ^ ff.fw[1]); } |