Build s_nan* objects from a generic template

This requires adding a macro to synthesize the call
to __strto*_nan.  Since this is likely to be the only
usage ever for strto* functions in generated libm
calls, a dedicated macro is defined for it.

7 files changed, 7 insertions, 10 deletions

diff --git a/sysdeps/generic/math-type-macros-double.h b/sysdeps/generic/math-type-macros-double.h
index 284a6a48db..6d0f20635a 100644
--- a/sysdeps/generic/math-type-macros-double.h
+++ b/sysdeps/generic/math-type-macros-double.h
@@ -25,6 +25,7 @@
 #define M_SUF(c) c
 #define FLOAT double
 #define CFLOAT _Complex double
+#define M_STRTO_NAN __strtod_nan
 
 /* Machines without a distinct long double type
    alias long double functions to their double
diff --git a/sysdeps/generic/math-type-macros-float.h b/sysdeps/generic/math-type-macros-float.h
index aab88fdfa5..33f51304a1 100644
--- a/sysdeps/generic/math-type-macros-float.h
+++ b/sysdeps/generic/math-type-macros-float.h
@@ -24,6 +24,7 @@
 #define M_SUF(c) c ## f
 #define FLOAT float
 #define CFLOAT _Complex float
+#define M_STRTO_NAN __strtof_nan
 
 /* Standard/GNU macro literals do not exist for the float type.  Use
    the double macro constants.  */
diff --git a/sysdeps/generic/math-type-macros-ldouble.h b/sysdeps/generic/math-type-macros-ldouble.h
index 90773fa578..4f959da05f 100644
--- a/sysdeps/generic/math-type-macros-ldouble.h
+++ b/sysdeps/generic/math-type-macros-ldouble.h
@@ -25,6 +25,7 @@
 #define M_SUF(c) c ## l
 #define FLOAT long double
 #define CFLOAT _Complex long double
+#define M_STRTO_NAN __strtold_nan
 
 /* Supply the generic macros.  */
 #include <math-type-macros.h>
diff --git a/sysdeps/generic/math-type-macros.h b/sysdeps/generic/math-type-macros.h
index 78b883c877..c2488ec600 100644
--- a/sysdeps/generic/math-type-macros.h
+++ b/sysdeps/generic/math-type-macros.h
@@ -30,6 +30,9 @@
 		i.e expf expl exp.
    FLOAT      - Resolves to the C typename of M_TYPE.
    CFLOAT     - Resolves to the complex typename of M_TYPE.
+   M_STRTO_NAN - Resolves to the internal libc function which
+		converts a string into the appropriate FLOAT nan
+		value.
 
   Optionally, these headers may inject a non-standard
   definition for the following:
diff --git a/sysdeps/ieee754/ldbl-opt/math-type-macros-double.h b/sysdeps/ieee754/ldbl-opt/math-type-macros-double.h
index f627264c18..2569607283 100644
--- a/sysdeps/ieee754/ldbl-opt/math-type-macros-double.h
+++ b/sysdeps/ieee754/ldbl-opt/math-type-macros-double.h
@@ -47,6 +47,7 @@
 #define LDOUBLE_fdiml_libm_version GLIBC_2_1
 #define LDOUBLE_fmaxl_libm_version GLIBC_2_1
 #define LDOUBLE_fminl_libm_version GLIBC_2_1
+#define LDOUBLE_nanl_libm_version GLIBC_2_1
 
 /* Define compat symbols for long double on platforms
    where it was not always a distinct type.  */
diff --git a/sysdeps/ieee754/ldbl-opt/s_nan.c b/sysdeps/ieee754/ldbl-opt/s_nan.c
deleted file mode 100644
index 418aad2076..0000000000
--- a/sysdeps/ieee754/ldbl-opt/s_nan.c
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <math/s_nan.c>
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
-compat_symbol (libm, __nan, nanl, GLIBC_2_1);
-#endif
diff --git a/sysdeps/ieee754/ldbl-opt/s_nanl.c b/sysdeps/ieee754/ldbl-opt/s_nanl.c
deleted file mode 100644
index 9496e0b5ce..0000000000
--- a/sysdeps/ieee754/ldbl-opt/s_nanl.c
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#undef weak_alias
-#define weak_alias(n,a)
-#include <math/s_nanl.c>
-long_double_symbol (libm, __nanl, nanl);