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For the Intel compiler use "-fp-model precise" on all platforms. #874

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merged 1 commit into from Mar 20, 2018
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For the Intel compiler use "-fp-model precise" on all platforms. #874

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2 changes: 1 addition & 1 deletion CMakeLists.txt
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Expand Up @@ -41,7 +41,7 @@ if (CMAKE_C_COMPILER_ID STREQUAL "Intel")
if (MSVC)
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /fp:precise")
else ()
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprotect-parens -fsigned-zeros")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fp-model precise")
endif ()
endif ()

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8 changes: 4 additions & 4 deletions configure.ac
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Expand Up @@ -33,8 +33,8 @@ dnl Check flag for accurate arithmetic with Intel compiler. This is
dnl needed to stop the compiler from ignoring parentheses in expressions
dnl like (a + b) + c and from simplifying 0.0 + x to x (which is wrong if
dnl x = -0.0).
AX_CHECK_COMPILE_FLAG([-fprotect-parens -fsigned-zeros],
[CFLAGS="$CFLAGS -fprotect-parens -fsigned-zeros"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-fp-model precise],
[CFLAGS="$CFLAGS -fp-model precise"],,[-Werror])
dnl Check for C99 math functions
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wall -Werror"
Expand Down Expand Up @@ -113,8 +113,8 @@ dnl posix mutexes for instance).
dnl ---------------------------------------------------------------------------

AC_ARG_WITH([mutex],
AS_HELP_STRING([--without-mutex],
[Disable real mutex locks (lacking pthreads)]),,)
AS_HELP_STRING([--without-mutex],
[Disable real mutex locks (lacking pthreads)]),,)

AC_MSG_CHECKING([for mutexes])
THREAD_LIB=""
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