Remove leftover "fenv" cruft

SConstruct

@@ -789,12 +789,6 @@ configh = {}
 
 env['HAS_TIMES_H'] = conf.CheckCHeader('sys/times.h', '""')
 env['HAS_UNISTD_H'] = conf.CheckCHeader('unistd.h', '""')
-#
-# Check to see if the compiler supports C99 fenv.h
-#      Apparently, the only compiler not to is MS visual before 2013
-#
-env['HAS_FENV_H'] = conf.CheckCHeader('fenv.h', '""')
-
 env['HAS_MATH_H_ERF'] = conf.CheckDeclaration('erf', '#include <math.h>', 'C++')
 
 env['HAS_GLOBAL_ISNAN'] = conf.CheckStatement('::isnan(1.0)', '#include <cmath>')
@@ -1281,12 +1275,6 @@ cdefine('USE_GLOBAL_ISNAN', 'HAS_GLOBAL_ISNAN')
 cdefine('USE_STD_ISNAN', 'HAS_STD_ISNAN')
 cdefine('USE_UNDERSCORE_ISNAN', 'HAS_UNDERSCORE_ISNAN')
 
-#  this turns on HAS_FENV_H
-if env['HAS_FENV_H']:
-    configh['HAS_FENV_H'] = 1
-else:
-    configh['HAS_FENV_H'] = None
-
 config_h = env.Command('include/cantera/base/config.h',
                        'include/cantera/base/config.h.in',
                        ConfigBuilder(configh))

include/cantera/base/config.h.in

@@ -84,8 +84,6 @@ typedef  int          ftnlen;       // Fortran hidden string length type
 %(USE_GLOBAL_ISNAN)s
 %(USE_UNDERSCORE_ISNAN)s
 
-%(HAS_FENV_H)s
-
 // This define is needed to account for the variability for how
 // static variables in templated classes are defined. Right now
 // this is only turned on for the SunPro compiler on Solaris.

include/cantera/base/ctexceptions.h

@@ -190,17 +190,6 @@ public:
     }
 };
 
-//! Quick check on whether there has been an underflow or overflow condition in the floating point unit
-/*!
- *    @return Returns true if there has been such a condition and it has not been cleared. returns false
- *            if there hasn't been an overflow, underflow or invalid condition.
- */
-bool check_FENV_OverUnder_Flow();
-
-//! Clear all the flags for floating-point exceptions
-void clear_FENV();
-
-
 //! Provides a line number
 #define XSTR_TRACE_LINE(s) STR_TRACE_LINE(s)
 

src/base/ctexceptions.cpp

@@ -2,9 +2,6 @@
 #include "cantera/base/ctexceptions.h"
 #include "application.h"
 
-#ifdef HAVE_FENV_H
-#include <fenv.h>
-#endif
 #include <sstream>
 
 namespace Cantera
@@ -79,21 +76,4 @@ std::string IndexError::getMessage() const
     return ss.str();
 }
 
-bool check_FENV_OverUnder_Flow() {
-#ifdef HAVE_FENV_H
-     fexcept_t ff;
-     fegetexceptflag(&ff, FE_OVERFLOW || FE_UNDERFLOW || FE_INVALID);
-     if (ff) {
-        return true;
-     }
-#endif
-     return false;
-};
-
-void clear_FENV() {
-#ifdef HAVE_FENV_H
-     feclearexcept(FE_ALL_EXCEPT);
-#endif
-}
-
 } // namespace Cantera