mirrors/gcc
0
0
Fork 0
mirror of https://gcc.gnu.org/git/gcc.git synced 2024-11-28 22:34:03 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

libstdc++: Fix long double to_chars testcase [PR98384]

Browse Source 
The testcase was failing to compile on some targets due to its use of
the non-standard functions nextupl and nextdownl.  This patch makes the
testcase instead use the C99 function nexttowardl in an equivalent way.

libstdc++-v3/ChangeLog:

	PR libstdc++/98384
	* testsuite/20_util/to_chars/long_double.cc: Use nexttowardl
	instead of the non-standard nextupl and nextdownl.
This commit is contained in:
Patrick Palka 2021-01-07 12:41:14 -05:00
parent 85fb1d7d5f
commit 19f3c433cd
1 changed files with 18 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
libstdc++-v3/testsuite/20_util/to_chars/long_double.cc
View File

@ -32,6 +32,17 @@
using namespace std;
namespace detail
{
long double
nextupl(long double x)
{ return nexttowardl(x, numeric_limits<long double>::infinity()); }
long double
nextdownl(long double x)
{ return nexttowardl(x, -numeric_limits<long double>::infinity()); }
}
// The long double overloads of std::to_chars currently just go through printf
// (except for the hexadecimal formatting).
@ -40,8 +51,8 @@ void
test01()
{
const long double hex_testcases[]
= { nextdownl(numeric_limits<long double>::max()),
nextupl(numeric_limits<long double>::min()),
= { detail::nextdownl(numeric_limits<long double>::max()),
detail::nextupl(numeric_limits<long double>::min()),
42.0L,
0x1.2p+0L,
0x1.23p+0L,
@ -94,7 +105,7 @@ test01()
{
// Verify that the nearby values have a different shortest form.
testcase = nextdownl(testcase);
testcase = detail::nextdownl(testcase);
result = to_chars(begin(to_chars_buffer), end(to_chars_buffer),
testcase, chars_format::hex);
VERIFY( result.ec == errc{} );
@ -103,7 +114,7 @@ test01()
sprintf(printf_buffer, "%La", testcase);
VERIFY( !strcmp(to_chars_buffer, printf_buffer+strlen("0x")) );
testcase = nextupl(nextupl(testcase));
testcase = detail::nextupl(detail::nextupl(testcase));
result = to_chars(begin(to_chars_buffer), end(to_chars_buffer),
testcase, chars_format::hex);
VERIFY( result.ec == errc{} );
@ -112,7 +123,7 @@ test01()
sprintf(printf_buffer, "%La", testcase);
VERIFY( !strcmp(to_chars_buffer, printf_buffer+strlen("0x")) );
testcase = nextdownl(testcase);
testcase = detail::nextdownl(testcase);
}
for (int precision = -1; precision < 50; precision++)
@ -173,7 +184,7 @@ test02()
*result.ptr = '\0';
char nearby_buffer[50000];
{
const long double smaller = nextdownl(value);
const long double smaller = detail::nextdownl(value);
result = to_chars(begin(nearby_buffer), end(nearby_buffer),
smaller, fmt);
VERIFY( result.ec == errc{} );
@ -182,7 +193,7 @@ test02()
}
{
long double larger = nextupl(value);
long double larger = detail::nextupl(value);
result = to_chars(begin(nearby_buffer), end(nearby_buffer),
larger, fmt);
VERIFY( result.ec == errc{} );