[gcc r13-1298] libstdc++: testsuite: use cmath long double overloads

[gcc r13-1298] libstdc++: testsuite: use cmath long double overloads

[Alexandre Oliva]

https://gcc.gnu.org/g:01e094f82d8d91e08f62465a2e4f7a4c4897f9cd

commit r13-1298-g01e094f82d8d91e08f62465a2e4f7a4c4897f9cd
Author: Alexandre Oliva <oliva@adacore.com>
Date:   Mon Jun 27 10:34:19 2022 -0300

    libstdc++: testsuite: use cmath long double overloads
    
    In case we need to supplement the C standard library with additional
    definitions for float and long double, the declarations expected to be
    in the C headers may not be there.  Rely on the cmath overloads
    instead.
    
    
    for  libstdc++-v3/ChangeLog
    
            * testsuite/20_util/to_chars/long_double.cc: Use cmath
            long double overloads for nexttoward and ldexp.

Diff:
---
 libstdc++-v3/testsuite/20_util/to_chars/long_double.cc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc b/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc
index 0b1c2c2936f..498388110b1 100644
--- a/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc
+++ b/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc
@@ -54,11 +54,11 @@ namespace detail
 {
   long double
   nextupl(long double x)
-  { return nexttowardl(x, numeric_limits<long double>::infinity()); }
+  { return nexttoward(x, numeric_limits<long double>::infinity()); }
 
   long double
   nextdownl(long double x)
-  { return nexttowardl(x, -numeric_limits<long double>::infinity()); }
+  { return nexttoward(x, -numeric_limits<long double>::infinity()); }
 }
 
 // The long double overloads of std::to_chars currently just go through printf
@@ -138,7 +138,7 @@ test01()
   for (int exponent : {-11000, -3000, -300, -50, -7, 0, 7, 50, 300, 3000, 11000})
     for (long double testcase : hex_testcases)
       {
-	testcase = ldexpl(testcase, exponent);
+	testcase = ldexp(testcase, exponent);
 	if (testcase == 0.0L || isinf(testcase))
 	  continue;