cmake/modules/ChecksForLibSamplerate.cmake

   1 #
   2 # some tests migrated from libsamplerate's acinclude.m4 - Tobias Doerffel, 2008
   3 #
   4
   5 INCLUDE(CheckCSourceCompiles)
   6 INCLUDE(CheckCSourceRuns)
   7
   8 SET(CMAKE_REQUIRED_LIBRARIES_ORIG ${CMAKE_REQUIRED_LIBRARIES})
   9 SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} -lm)
  10 SET(C99_MATH "  #define         _ISOC9X_SOURCE  1
  11                 #define         _ISOC99_SOURCE  1
  12                 #define         __USE_ISOC99    1
  13                 #define         __USE_ISOC9X    1
  14
  15                 #include <math.h>
  16                                         ")
  17 SET(TEST_LRINT "int main( void )
  18                 {
  19                         if (!lrint(3.14159)) lrint(2.7183);
  20                         return( 0 );
  21                 }")
  22 SET(TEST_LRINTF "int main( void )
  23                 {
  24                         if (!lrintf(3.14159)) lrintf(2.7183);
  25                         return( 0 );
  26                 }")
  27 CHECK_C_SOURCE_COMPILES("${C99_MATH}${TEST_LRINT}" HAVE_LRINT)
  28 CHECK_C_SOURCE_COMPILES("${C99_MATH}${TEST_LRINTF}" HAVE_LRINTF)
  29
  30
  31 CHECK_C_SOURCE_RUNS("
  32         #define _ISOC9X_SOURCE  1
  33         #define _ISOC99_SOURCE  1
  34         #define __USE_ISOC99    1
  35         #define __USE_ISOC9X    1
  36         #include <math.h>
  37         int main (void)
  38         {       double  fval ;
  39                 int k, ival ;
  40
  41                 fval = 1.0 * 0x7FFFFFFF ;
  42                 for (k = 0 ; k < 100 ; k++)
  43                 {       ival = (lrint (fval)) >> 24 ;
  44                         if (ival != 127)
  45                                 return 1 ;
  46
  47                         fval *= 1.2499999 ;
  48                         } ;
  49
  50                         return 0 ;
  51                 }
  52                                 " CPU_CLIPS_POSITIVE)
  53 CHECK_C_SOURCE_RUNS("
  54        #define _ISOC9X_SOURCE  1
  55         #define _ISOC99_SOURCE  1
  56         #define __USE_ISOC99    1
  57         #define __USE_ISOC9X    1
  58         #include <math.h>
  59         int main (void)
  60         {       double  fval ;
  61                 int k, ival ;
  62
  63                 fval = -8.0 * 0x10000000 ;
  64                 for (k = 0 ; k < 100 ; k++)
  65                 {       ival = (lrint (fval)) >> 24 ;
  66                         if (ival != -128)
  67                                 return 1 ;
  68
  69                         fval *= 1.2499999 ;
  70                         } ;
  71
  72                         return 0 ;
  73                 }
  74                                 " CPU_CLIPS_NEGATIVE)
  75 SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES_ORIG})
  76