TST: another attempt at fixing the windows lqmn test build

Author: jorenham

tests/scipy_special_tests/test_lqmn.cpp

@@ -14,8 +14,8 @@ TEST_CASE("lqmn TestLegendreFunctions.test_lqmn", "[lqmn][lqn][real][smoketest]"
     constexpr int n = 2;
     constexpr double x = 0.5;
     // `xsf::lqmn` requires the matrices to be at least 2x2
-    constexpr int m1p = std::max(2, m + 1);
-    constexpr int n1p = std::max(2, n + 1);
+    constexpr size_t m1p = 2;
+    constexpr size_t n1p = 3;
 
     // lqmnf = special.lqmn(0, 2, .5)
     double lqmnf0_data[m1p * n1p], lqmnf1_data[m1p * n1p];
@@ -62,8 +62,8 @@ TEST_CASE("lqmn TestLegendreFunctions.test_lqmn_gt1", "[lqmn][real][smoketest]")
 
     constexpr int m = 2;
     constexpr int n = 1;
-    constexpr int m1p = m + 1;
-    constexpr int n1p = n + 1;
+    constexpr size_t m1p = 3;
+    constexpr size_t n1p = 2;
 
     double lqmnf0_data[m1p * n1p], lqmnf1_data[m1p * n1p];
     auto lqmnf0 = std::mdspan(lqmnf0_data, m1p, n1p);
@@ -97,8 +97,8 @@ TEST_CASE("lqmn complex", "[lqmn][complex][smoketest]") {
     constexpr int m = 0;
     constexpr int n = 0;
     // `xsf::lqmn` requires the matrices to be at least 2x2
-    constexpr int m1p = std::max(2, m + 1);
-    constexpr int n1p = std::max(2, n + 1);
+    constexpr size_t m1p = 2;
+    constexpr size_t n1p = 2;
 
     // (q_mn, qp_mn) = lqmn(0, 0, 0.5)
     double q_data[m1p * n1p], qp_data[m1p * n1p];