issue/130: use int

src/infiniop/ops/gemm/cpu/gemm_cpu.cc

@@ -43,12 +43,12 @@ void calculate(
         std::swap(a, b);
     }
 #pragma omp parallel for collapse(3)
-    for (ptrdiff_t i = 0; i < ptrdiff_t(info.batch); ++i) {
-        for (ptrdiff_t m_ = 0; m_ < ptrdiff_t(info.m); ++m_) {
-            for (ptrdiff_t n_ = 0; n_ < ptrdiff_t(info.n); ++n_) {
+    for (int i = 0; i < static_cast<int>(info.batch); ++i) {
+        for (int m_ = 0; m_ < static_cast<int>(info.m); ++m_) {
+            for (int n_ = 0; n_ < static_cast<int>(info.n); ++n_) {
                 auto c_ = reinterpret_cast<Tdata *>(c) + i * info.c_matrix.stride + m_ * info.c_matrix.row_stride + n_ * info.c_matrix.col_stride;
                 float sum = 0;
-                for (size_t k_ = 0; k_ < info.k; ++k_) {
+                for (int k_ = 0; k_ < static_cast<int>(info.k); ++k_) {
                     auto a_ = reinterpret_cast<const Tdata *>(a) + i * info.a_matrix.stride + m_ * info.a_matrix.row_stride + k_ * info.a_matrix.col_stride;
                     auto b_ = reinterpret_cast<const Tdata *>(b) + i * info.b_matrix.stride + n_ * info.b_matrix.col_stride + k_ * info.b_matrix.row_stride;
                     if constexpr (std::is_same<Tdata, fp16_t>::value) {