mirror of
https://github.com/RetroDECK/Duckstation.git
synced 2024-11-30 09:35:40 +00:00
82 lines
2 KiB
CMake
82 lines
2 KiB
CMake
|
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()
|