Drop the hacks used for partial C99 math libraries.

All supported platforms have half-way decent C99 support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231679 91177308-0d34-0410-b5e6-96231b3b80d8

autoconf/configure.ac

@@ -1699,9 +1699,7 @@ dnl=== SECTION 8: Check for specific functions needed
 dnl===
 dnl===-----------------------------------------------------------------------===
 
-AC_CHECK_FUNCS([backtrace ceilf floorf roundf rintf nearbyintf getcwd ])
-AC_CHECK_FUNCS([powf fmodf strtof round ])
-AC_CHECK_FUNCS([log log2 log10 exp exp2])
+AC_CHECK_FUNCS([backtrace getcwd ])
 AC_CHECK_FUNCS([getpagesize getrusage getrlimit setrlimit gettimeofday ])
 AC_CHECK_FUNCS([isatty mkdtemp mkstemp ])
 AC_CHECK_FUNCS([mktemp posix_spawn pread realpath sbrk setrlimit ])
@@ -1765,11 +1763,6 @@ if test "$llvm_cv_os_type" = "MingW" ; then
   AC_DEFINE_UNQUOTED([WIN32_ELMCB_PCSTR],$llvm_cv_win32_elmcb_pcstr,[Type of 1st arg on ELM Callback])
 fi
 
-dnl Check for variations in the Standard C++ library and STL. These macros are
-dnl provided by LLVM in the autoconf/m4 directory.
-AC_FUNC_ISNAN
-AC_FUNC_ISINF
-
 dnl Check for mmap support.We also need to know if /dev/zero is required to
 dnl be opened for allocating RWX memory.
 dnl Make sure we aren't attempting to configure for an unknown system

cmake/config-ix.cmake

@@ -137,20 +137,6 @@ check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE)
 check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE)
 check_symbol_exists(setrlimit sys/resource.h HAVE_SETRLIMIT)
 check_symbol_exists(isatty unistd.h HAVE_ISATTY)
-check_symbol_exists(isinf cmath HAVE_ISINF_IN_CMATH)
-check_symbol_exists(isinf math.h HAVE_ISINF_IN_MATH_H)
-check_symbol_exists(finite ieeefp.h HAVE_FINITE_IN_IEEEFP_H)
-check_symbol_exists(isnan cmath HAVE_ISNAN_IN_CMATH)
-check_symbol_exists(isnan math.h HAVE_ISNAN_IN_MATH_H)
-check_symbol_exists(ceilf math.h HAVE_CEILF)
-check_symbol_exists(floorf math.h HAVE_FLOORF)
-check_symbol_exists(fmodf math.h HAVE_FMODF)
-check_symbol_exists(log math.h HAVE_LOG)
-check_symbol_exists(log2 math.h HAVE_LOG2)
-check_symbol_exists(log10 math.h HAVE_LOG10)
-check_symbol_exists(exp math.h HAVE_EXP)
-check_symbol_exists(exp2 math.h HAVE_EXP2)
-check_symbol_exists(exp10 math.h HAVE_EXP10)
 check_symbol_exists(futimens sys/stat.h HAVE_FUTIMENS)
 check_symbol_exists(futimes sys/time.h HAVE_FUTIMES)
 if( HAVE_SETJMP_H )
@@ -162,7 +148,6 @@ endif()
 if( HAVE_SYS_UIO_H )
   check_symbol_exists(writev sys/uio.h HAVE_WRITEV)
 endif()
-check_symbol_exists(nearbyintf math.h HAVE_NEARBYINTF)
 check_symbol_exists(mallctl malloc_np.h HAVE_MALLCTL)
 check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO)
 check_symbol_exists(malloc_zone_statistics malloc/malloc.h