LWG2597 std::log misspecified for complex numbers

Author: Dawn Perchik

source/numerics.tex

@@ -1162,8 +1162,11 @@
 \pnum
 \returns
 The complex natural (base-$e$) logarithm of \tcode{x}. For all \tcode{x},
-\tcode{imag(log(x))} lies in the interval \crange{$-\pi$}{$\pi$}, and
-when \tcode{x} is a negative real number, \tcode{imag(log(x))} is $\pi$.
+\tcode{imag(log(x))} lies in the interval \crange{$-\pi$}{$\pi$}.
+\begin{note}
+The semantics of this function are intended to be the same in \Cpp
+as they are for \tcode{clog} in C.
+\end{note}
 
 \pnum
 \remarks
@@ -1240,8 +1243,10 @@
 \returns
 The complex square root of \tcode{x}, in the range of the right
 half-plane.
-If the argument is a negative real number, the
-value returned lies on the positive imaginary axis.
+\begin{note}
+The semantics of this function are intended to be the same in \Cpp
+as they are for \tcode{csqrt} in C.
+\end{note}
 
 \pnum
 \remarks