[cmath.syn] Improve indexing for macros

Author: AlisdairM

source/numerics.tex

@@ -9117,23 +9117,6 @@
 \rSec2[cmath.syn]{Header \tcode{<cmath>} synopsis}
 
 \indexheader{cmath}%
-\indexlibraryglobal{FP_FAST_FMA}%
-\indexlibraryglobal{FP_FAST_FMAF}%
-\indexlibraryglobal{FP_FAST_FMAL}%
-\indexlibraryglobal{FP_ILOGB0}%
-\indexlibraryglobal{FP_ILOGBNAN}%
-\indexlibraryglobal{FP_INFINITE}%
-\indexlibraryglobal{FP_NAN}%
-\indexlibraryglobal{FP_NORMAL}%
-\indexlibraryglobal{FP_SUBNORMAL}%
-\indexlibraryglobal{FP_ZERO}%
-\indexlibraryglobal{HUGE_VAL}%
-\indexlibraryglobal{HUGE_VALF}%
-\indexlibraryglobal{HUGE_VALL}%
-\indexlibraryglobal{INFINITY}%
-\indexlibraryglobal{MATH_ERREXCEPT}%
-\indexlibraryglobal{MATH_ERRNO}%
-\indexlibraryglobal{NAN}%
 \indexlibraryglobal{abs}%
 \indexlibraryglobal{acos}%
 \indexlibraryglobal{acosf}%
@@ -9262,7 +9245,6 @@
 \indexlibraryglobal{lround}%
 \indexlibraryglobal{lroundf}%
 \indexlibraryglobal{lroundl}%
-\indexlibraryglobal{math_errhandling}%
 \indexlibraryglobal{modf}%
 \indexlibraryglobal{modff}%
 \indexlibraryglobal{modfl}%
@@ -9327,25 +9309,25 @@
   using double_t = @\seebelow@;
 }
 
-#define HUGE_VAL @\seebelow@
-#define HUGE_VALF @\seebelow@
-#define HUGE_VALL @\seebelow@
-#define INFINITY @\seebelow@
-#define NAN @\seebelow@
-#define FP_INFINITE @\seebelow@
-#define FP_NAN @\seebelow@
-#define FP_NORMAL @\seebelow@
-#define FP_SUBNORMAL @\seebelow@
-#define FP_ZERO @\seebelow@
-#define FP_FAST_FMA @\seebelow@
-#define FP_FAST_FMAF @\seebelow@
-#define FP_FAST_FMAL @\seebelow@
-#define FP_ILOGB0 @\seebelow@
-#define FP_ILOGBNAN @\seebelow@
-#define MATH_ERRNO @\seebelow@
-#define MATH_ERREXCEPT @\seebelow@
-
-#define math_errhandling @\seebelow@
+#define @\libmacro{HUGE_VAL}@ @\seebelow@
+#define @\libmacro{HUGE_VALF}@ @\seebelow@
+#define @\libmacro{HUGE_VALL}@ @\seebelow@
+#define @\libmacro{INFINITY}@ @\seebelow@
+#define @\libmacro{NAN}@ @\seebelow@
+#define @\libmacro{FP_INFINITE}@ @\seebelow@
+#define @\libmacro{FP_NAN}@ @\seebelow@
+#define @\libmacro{FP_NORMAL}@ @\seebelow@
+#define @\libmacro{FP_SUBNORMAL}@ @\seebelow@
+#define @\libmacro{FP_ZERO}@ @\seebelow@
+#define @\libmacro{FP_FAST_FMA}@ @\seebelow@
+#define @\libmacro{FP_FAST_FMAF}@ @\seebelow@
+#define @\libmacro{FP_FAST_FMAL}@ @\seebelow@
+#define @\libmacro{FP_ILOGB0}@ @\seebelow@
+#define @\libmacro{FP_ILOGBNAN}@ @\seebelow@
+#define @\libmacro{MATH_ERRNO}@ @\seebelow@
+#define @\libmacro{MATH_ERREXCEPT}@ @\seebelow@
+
+#define @\libmacro{math_errhandling}@ @\seebelow@
 
 namespace std {
   constexpr @\placeholdernc{floating-point-type}@ acos(@\placeholdernc{floating-point-type}@ x);