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-rw-r--r--Eigen/src/Core/MathFunctionsImpl.h7
1 files changed, 1 insertions, 6 deletions
diff --git a/Eigen/src/Core/MathFunctionsImpl.h b/Eigen/src/Core/MathFunctionsImpl.h
index 3c9ef22fa..ae1386b4c 100644
--- a/Eigen/src/Core/MathFunctionsImpl.h
+++ b/Eigen/src/Core/MathFunctionsImpl.h
@@ -29,12 +29,7 @@ T generic_fast_tanh_float(const T& a_x)
// this range is +/-1.0f in single-precision.
const T plus_9 = pset1<T>(9.f);
const T minus_9 = pset1<T>(-9.f);
- // NOTE GCC prior to 6.3 might improperly optimize this max/min
- // step such that if a_x is nan, x will be either 9 or -9,
- // and tanh will return 1 or -1 instead of nan.
- // This is supposed to be fixed in gcc6.3,
- // see: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72867
- const T x = pmax(minus_9,pmin(plus_9,a_x));
+ const T x = pmax(pmin(a_x, plus_9), minus_9);
// The monomial coefficients of the numerator polynomial (odd).
const T alpha_1 = pset1<T>(4.89352455891786e-03f);
const T alpha_3 = pset1<T>(6.37261928875436e-04f);