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CMake: Cache clip test result

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evpobr 2020-09-24 08:43:47 +05:00 committed by Erik de Castro Lopo
parent 8e97d8182e
commit ec8f843fa1
1 changed files with 73 additions and 73 deletions
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146
cmake/ClipMode.cmake
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@ -2,91 +2,91 @@ include (CheckCSourceRuns)
include (CMakePushCheckState)
macro (CLIP_MODE)
if ((NOT DEFINED CPU_CLIPS_NEGATIVE) AND (NOT DEFINED CPU_CLIPS_POSITIVE))
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")
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...")
message (STATUS "Checking processor clipping capabilities...")
if (CMAKE_CROSSCOMPILING)
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})
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 (NOT CMAKE_CROSSCOMPILING)
else (NOT CMAKE_CROSSCOMPILING)
cmake_push_check_state ()
set (CMAKE_REQUIRED_QUIET TRUE)
if (LIBM_REQUIRED)
set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${M_LIBRARY})
endif ()
check_c_source_runs (
"
#define _ISOC9X_SOURCE 1
#define _ISOC99_SOURCE 1
#define __USE_ISOC99 1
#define __USE_ISOC9X 1
#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 ;
cmake_push_check_state ()
fval *= 1.2499999 ;
} ;
set (CMAKE_REQUIRED_QUIET TRUE)
if (LIBM_REQUIRED)
set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${M_LIBRARY})
endif ()
return 0 ;
}
"
CPU_CLIPS_POSITIVE)
check_c_source_runs (
"
#define _ISOC9X_SOURCE 1
#define _ISOC99_SOURCE 1
#define __USE_ISOC99 1
#define __USE_ISOC9X 1
#include <math.h>
int main (void)
{ double fval ;
int k, ival ;
check_c_source_runs (
"
#define _ISOC9X_SOURCE 1
#define _ISOC99_SOURCE 1
#define __USE_ISOC99 1
#define __USE_ISOC9X 1
#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 = 1.0 * 0x7FFFFFFF ;
for (k = 0 ; k < 100 ; k++)
{ ival = (lrint (fval)) >> 24 ;
if (ival != 127)
return 1 ;
fval *= 1.2499999 ;
} ;
return 0 ;
}
"
CPU_CLIPS_POSITIVE)
fval *= 1.2499999 ;
} ;
return 0 ;
}
"
CPU_CLIPS_NEGATIVE)
check_c_source_runs (
"
#define _ISOC9X_SOURCE 1
#define _ISOC99_SOURCE 1
#define __USE_ISOC99 1
#define __USE_ISOC9X 1
#include <math.h>
int main (void)
{ double fval ;
int k, ival ;
cmake_pop_check_state ()
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)
if (CPU_CLIPS_POSITIVE AND (NOT CPU_CLIPS_NEGATIVE))
set (CLIP_MSG "positive")
elseif (CPU_CLIPS_NEGATIVE AND (NOT CPU_CLIPS_POSITIVE))
set (CLIP_MSG "negative")
elseif (CPU_CLIPS_POSITIVE AND CPU_CLIPS_NEGATIVE)
set (CLIP_MSG "both")
else ()
set (CLIP_MSG "none")
endif ()
cmake_pop_check_state ()
endif (CMAKE_CROSSCOMPILING)
if (CPU_CLIPS_POSITIVE AND (NOT CPU_CLIPS_NEGATIVE))
set (CLIP_MSG "positive")
elseif (CPU_CLIPS_NEGATIVE AND (NOT CPU_CLIPS_POSITIVE))
set (CLIP_MSG "negative")
elseif (CPU_CLIPS_POSITIVE AND CPU_CLIPS_NEGATIVE)
set (CLIP_MSG "both")
else ()
set (CLIP_MSG "none")
endif ()
message (STATUS "Checking processor clipping capabilities... ${CLIP_MSG}")
endif (CMAKE_CROSSCOMPILING)
message (STATUS "Checking processor clipping capabilities... ${CLIP_MSG}")
endif ()
endmacro (CLIP_MODE)