Hello, Perhaps the values of some constants are not as accurate as they should be? See also M_LN2LO and M_LN2HI.
diff -uNr cygwin-snapshot-20140807-1-original/newlib/libc/include/math.h cygwin-snapshot-20140807-1-patched/newlib/libc/include/math.h --- cygwin-snapshot-20140807-1-original/newlib/libc/include/math.h 2014-08-07 18:26:21.000000000 +0200 +++ cygwin-snapshot-20140807-1-patched/newlib/libc/include/math.h 2014-08-07 19:31:51.000000000 +0200 @@ -569,14 +569,14 @@ #ifndef __STRICT_ANSI__ #define M_TWOPI (M_PI * 2.0) -#define M_3PI_4 2.3561944901923448370E0 -#define M_SQRTPI 1.77245385090551602792981 +#define M_3PI_4 2.3561944901923449288E0 +#define M_SQRTPI 1.77245385090551602729817 #define M_LN2LO 1.9082149292705877000E-10 #define M_LN2HI 6.9314718036912381649E-1 -#define M_SQRT3 1.73205080756887719000 +#define M_SQRT3 1.73205080756887729353 #define M_IVLN10 0.43429448190325182765 /* 1 / log(10) */ #define M_LOG2_E _M_LN2 -#define M_INVLN2 1.4426950408889633870E0 /* 1 / log(2) */ +#define M_INVLN2 1.4426950408889634074E0 /* 1 / log(2) */ /* Global control over fdlibm error handling. */ Regards, Denis Excoffier. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
