From 889dbf81def0986e4569841d64a7f3882808ee07 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn-Egil=20Dahlberg?= Date: Wed, 6 May 2015 15:17:18 +0200 Subject: erts: Don't let the compiler optimize pos. zero fix --- erts/emulator/beam/utils.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'erts/emulator/beam/utils.c') 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]); } -- cgit v1.2.3