From 9310de2cb5cc4c85b54e7e90aa6cd88664380346 Mon Sep 17 00:00:00 2001
From: Dario Izzo <darioizzo@gmail.com>
Date: Thu, 20 Oct 2022 12:12:35 +0200
Subject: [PATCH] format for mpp missing integer<1>

---
 include/obake/detail/fmt_compat.hpp             | 15 +++++++++++++++
 include/obake/polynomials/d_packed_monomial.hpp |  4 ++--
 include/obake/series.hpp                        |  4 +---
 3 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/include/obake/detail/fmt_compat.hpp b/include/obake/detail/fmt_compat.hpp
index d42779e3..53023c66 100644
--- a/include/obake/detail/fmt_compat.hpp
+++ b/include/obake/detail/fmt_compat.hpp
@@ -61,4 +61,19 @@ struct ostream_formatter {
 
 } // namespace obake::detail
 
+#if FMT_VERSION >= 90000L
+
+// fmt formatter for mppp:integer
+// on top of the streaming operator.
+namespace fmt
+{
+
+template <>
+struct formatter<mppp::integer<1>> : obake::detail::ostream_formatter {
+};
+
+} // namespace fmt
+
+#endif
+
 #endif
\ No newline at end of file
diff --git a/include/obake/polynomials/d_packed_monomial.hpp b/include/obake/polynomials/d_packed_monomial.hpp
index 0b0f9621..fec94482 100644
--- a/include/obake/polynomials/d_packed_monomial.hpp
+++ b/include/obake/polynomials/d_packed_monomial.hpp
@@ -1427,8 +1427,8 @@ inline constexpr bool monomial_hash_is_homomorphic<d_packed_monomial<T, PSize>>
 namespace fmt
 {
 
-template <typename T>
-struct formatter<obake::d_packed_monomial<T>> : obake::detail::ostream_formatter {
+template <typename T, unsigned PSize>
+struct formatter<obake::d_packed_monomial<T, PSize>> : obake::detail::ostream_formatter {
 };
 
 } // namespace fmt
diff --git a/include/obake/series.hpp b/include/obake/series.hpp
index 5b2b3d05..5d6cd7f0 100644
--- a/include/obake/series.hpp
+++ b/include/obake/series.hpp
@@ -38,9 +38,6 @@
 #include <boost/serialization/access.hpp>
 #include <boost/serialization/split_member.hpp>
 
-#include <fmt/format.h>
-#include <fmt/ostream.h>
-
 #include <tbb/blocked_range.h>
 #include <tbb/parallel_for.h>
 #include <tbb/parallel_reduce.h>
@@ -53,6 +50,7 @@
 #include <obake/config.hpp>
 #include <obake/detail/abseil.hpp>
 #include <obake/detail/fcast.hpp>
+#include <obake/detail/fmt_compat.hpp>
 #include <obake/detail/ignore.hpp>
 #include <obake/detail/limits.hpp>
 #include <obake/detail/not_implemented.hpp>