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5b79dff868
llvm-svn: 16224
25 lines
1021 B
Plaintext
25 lines
1021 B
Plaintext
#
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# This function determins if the the isinf function isavailable on this
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# platform.
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#
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AC_DEFUN([AC_FUNC_ISINF],[
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AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_MATH_H], [ac_cv_func_isinf_in_math_h],
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[isinf], [<math.h>],
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[#include <math.h>
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int foo(float f) {return isinf(f);}])
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AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_CMATH], [ac_cv_func_isinf_in_cmath],
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[isinf], [<cmath>],
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[#include <cmath>
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int foo(float f) {return isinf(f);}])
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AC_SINGLE_CXX_CHECK([HAVE_STD_ISINF_IN_CMATH], [ac_cv_func_std_isinf_in_cmath],
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[std::isinf], [<cmath>],
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[#include <cmath>
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using std::isinf; int foo(float f) {return isinf(f);}])
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AC_SINGLE_CXX_CHECK([HAVE_FINITE_IN_IEEEFP_H], [ac_cv_func_finite_in_ieeefp_h],
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[finite], [<ieeefp.h>],
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[#include <ieeefp.h>
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int foo(float f) {return finite(f);}])
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])
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