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#ifndef M_PI
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#ifndef M_PI
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#define M_PI 3.141592653589793238462643383279502884197169399375
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#define M_PI 3.141592653589793238462643383279502884197169399375
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#endif
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#endif
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#ifndef STRICT_R_HEADERS
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#define PI             M_PI
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#define PI             M_PI
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#define SINGLE_EPS     FLT_EPSILON
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#define SINGLE_EPS     FLT_EPSILON
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#define SINGLE_BASE    FLT_RADIX
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#define SINGLE_BASE    FLT_RADIX
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#define SINGLE_XMIN    FLT_MIN
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#define SINGLE_XMIN    FLT_MIN
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#define SINGLE_XMAX    FLT_MAX
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#define SINGLE_XMAX    FLT_MAX
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#define DOUBLE_DIGITS  DBL_MANT_DIG
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#define DOUBLE_DIGITS  DBL_MANT_DIG
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#define DOUBLE_EPS     DBL_EPSILON
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#define DOUBLE_EPS     DBL_EPSILON
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#define DOUBLE_XMAX    DBL_MAX
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#define DOUBLE_XMAX    DBL_MAX
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#define DOUBLE_XMIN    DBL_MIN
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#define DOUBLE_XMIN    DBL_MIN
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#endif
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#endif
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#endif /* R_EXT_CONSTANTS_H_ */