[bit] Avoid std::numeric_limits<...>

Referring to numeric_limits (without std:: prefix) is sufficient.

Author: jensmaurer

source/numerics.tex

@@ -1471,7 +1471,7 @@
 \rSec2[bit.rotate]{Rotating}
 
 In the following descriptions,
-let \tcode{N} denote \tcode{std::numeric_limits<T>::digits}.
+let \tcode{N} denote \tcode{numeric_limits<T>::digits}.
 
 \begin{itemdecl}
 template<class T>
@@ -1518,7 +1518,7 @@
 \rSec2[bit.count]{Counting}
 
 In the following descriptions,
-let \tcode{N} denote \tcode{std::numeric_limits<T>::digits}.
+let \tcode{N} denote \tcode{numeric_limits<T>::digits}.
 
 \begin{itemdecl}
 template<class T>
@@ -1556,7 +1556,7 @@
 The number of consecutive \tcode{1} bits in the value of \tcode{x},
 starting from the most significant bit.
 \begin{note}
-Returns \tcode{N} if \tcode{x == std::numeric_limits<T>::max()}.
+Returns \tcode{N} if \tcode{x == numeric_limits<T>::max()}.
 \end{note}
 \end{itemdescr}
 
@@ -1596,7 +1596,7 @@
 The number of consecutive \tcode{1} bits in the value of \tcode{x},
 starting from the least significant bit.
 \begin{note}
-Returns \tcode{N} if \tcode{x == std::numeric_limits<T>::max()}.
+Returns \tcode{N} if \tcode{x == numeric_limits<T>::max()}.
 \end{note}
 \end{itemdescr}