HeAP: Add TAUCS wrapper and integration

Signed-off-by: David Shah <dave@ds0.me>

1 files changed, 43 insertions, 0 deletions

diff --git a/common/placer_math.h b/common/placer_math.h
new file mode 100644
index 00000000..3782e99f
--- /dev/null
+++ b/common/placer_math.h
@@ -0,0 +1,43 @@
+/*
+ *  nextpnr -- Next Generation Place and Route
+ *
+ *  Copyright (C) 2019  David Shah <david@symbioticeda.com>
+ *
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+ */
+
+#ifndef PLACER_MATH_H
+#define PLACER_MATH_H
+// This shim is needed because Tauc is mutually incompatible with modern C++ (implementing macros and functions
+// that collide with max, min, etc)
+#ifdef __cplusplus
+extern "C" {
+#endif
+extern void taucif_init_solver();
+
+struct taucif_system;
+
+extern struct taucif_system *taucif_create_system(int rows, int cols, int n_nonzero);
+
+extern void taucif_set_matrix_value(struct taucif_system *sys, int row, int col, double value);
+
+extern void taucif_solve_system(struct taucif_system *sys, double *x, double *rhs);
+
+extern void taucif_free_system(struct taucif_system *sys);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
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