[simd.complex.{access,math}] Wrap "cmplx-func" placeholder in \tcode (#8385)

Author: eisenwave

source/numerics.tex

@@ -17947,7 +17947,7 @@
 An object of type \tcode{rebind_t<typename T::value_type, basic_vec>}
 where the $i^\text{th}$ element is initialized to the result of
 \tcode{\placeholder{cmplx-func}(operator[]($i$))} for all $i$ in the range
-\range{0}{size()}, where \placeholder{cmplx-func} is the corresponding function
+\range{0}{size()}, where \tcode{\placeholder{cmplx-func}} is the corresponding function
 from \libheader{complex}.
 \end{itemdescr}
 
@@ -19979,9 +19979,9 @@
 \returns
 A \tcode{basic_vec} object \tcode{ret} where the $i^\text{th}$ element is
 initialized to the result of \tcode{\placeholder{cmplx-func}(v[$i$])} for all
-$i$ in the range \range{0}{V::size()}, where \placeholder{cmplx-func} is the
+$i$ in the range \range{0}{V::size()}, where \tcode{\placeholder{cmplx-func}} is the
 corresponding function from \libheader{complex}. If in an invocation of
-\placeholder{cmplx-func} for index $i$ a domain, pole, or range error would
+\tcode{\placeholder{cmplx-func}} for index $i$ a domain, pole, or range error would
 occur, the value of \tcode{ret[$i$]} is unspecified.
 
 \pnum
@@ -20003,9 +20003,9 @@
 \returns
 A \tcode{basic_vec} object \tcode{ret} where the $i^\text{th}$ element is
 initialized to the result of \tcode{\placeholder{cmplx-func}(x[$i$], y[$i$])}
-for all $i$ in the range \range{0}{V::size()}, where \placeholder{cmplx-func}
+for all $i$ in the range \range{0}{V::size()}, where \tcode{\placeholder{cmplx-func}}
 is the corresponding function from \libheader{complex}. If in an invocation of
-\placeholder{cmplx-func} for index $i$ a domain, pole, or range error would
+\tcode{\placeholder{cmplx-func}} for index $i$ a domain, pole, or range error would
 occur, the value of \tcode{ret[$i$]} is unspecified.
 
 \pnum