[committed] libstdc++: Fix typo in piecewise_constant_distribution::param_type constructor.

[Tomasz Kamiński]

Fixed typo in r17-509-g7bed7d9276c11b: The __fw should be called with
__xmin + 0.5 * __delta (as in existing loop), not __xmin * 0.5 * __delta.

libstdc++-v3/ChangeLog:

        * include/bits/random.tcc
        (piecewise_constant_distribution:::param_type::param_type):
        Replace * with + in __fw argument.
---
 libstdc++-v3/include/bits/random.tcc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libstdc++-v3/include/bits/random.tcc 
b/libstdc++-v3/include/bits/random.tcc
index e581f912764..a8fab79961d 100644
--- a/libstdc++-v3/include/bits/random.tcc
+++ b/libstdc++-v3/include/bits/random.tcc
@@ -3084,7 +3084,7 @@ namespace __detail
        if (__n == 1)
          {
            _RealType __ints[2] = { __xmin, __xmin + __delta };
-           _RealType __den = __fw(__xmin * 0.5 * __delta);
+           _RealType __den = __fw(__xmin + 0.5 * __delta);
            _M_initialize2(__ints, __den);
            return;
          }
-- 
2.54.0