macro(CLIP_MODE)   set(CLIP_MODE_POSITIVE_MESSAGE "Target processor clips on positive float to int conversion")  set(CLIP_MODE_NEGATIVE_MESSAGE "Target processor clips on negative float to int conversion")   message(STATUS "Checking processor clipping capabilities...")   if(CMAKE_CROSSCOMPILING)     set(CLIP_MSG "disabled")    set(CPU_CLIPS_POSITIVE FALSE CACHE BOOL ${CLIP_MODE_POSITIVE_MESSAGE})    set(CPU_CLIPS_NEGATIVE FALSE CACHE BOOL ${CLIP_MODE_NEGATIVE_MESSAGE})   else()      include(CheckCSourceRuns)      include(CMakePushCheckState)      cmake_push_check_state(RESET)       if(MATH_LIBRARY)        list(APPEND CMAKE_REQUIRED_LIBRARIES ${MATH_LIBRARY})      endif()       check_c_source_runs(      "      #include <math.h>      int main (void)      {   double  fval ;          int k, ival ;           fval = 1.0 * 0x7FFFFFFF ;          for (k = 0 ; k < 100 ; k++)          {   ival = (lrint (fval)) >> 24 ;              if (ival != 127)                  return 1 ;               fval *= 1.2499999 ;              } ;               return 0 ;          }      "      CPU_CLIPS_POSITIVE)       check_c_source_runs(        "        #include <math.h>        int main (void)        {   double  fval ;            int k, ival ;             fval = -8.0 * 0x10000000 ;            for (k = 0 ; k < 100 ; k++)            {   ival = (lrint (fval)) >> 24 ;                if (ival != -128)                    return 1 ;                 fval *= 1.2499999 ;                } ;                 return 0 ;            }        "        CPU_CLIPS_NEGATIVE)       cmake_pop_check_state()       if(CPU_CLIPS_POSITIVE AND CPU_CLIPS_NEGATIVE)          set(CLIP_MSG "both")      elseif(CPU_CLIPS_POSITIVE)          set(CLIP_MSG "positive")      elseif(CPU_CLIPS_NEGATIVE)          set(CLIP_MSG "negative")      else()          set(CLIP_MSG "none")      endif()   endif()   message(STATUS "Checking processor clipping capabilities... ${CLIP_MSG}") endmacro()