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@@ -1,6 +1,6 @@
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/* StarPU --- Runtime system for heterogeneous multicore architectures.
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*
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- * Copyright (C) 2010-2011, 2014 Université de Bordeaux
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+ * Copyright (C) 2010-2011, 2014-2015 Université de Bordeaux
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*
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* StarPU is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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@@ -62,9 +62,13 @@
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#define k_2powneg32 2.3283064E-10F
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-#if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__MINGW32__)
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+#if defined(_WIN32)
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+#ifdef __GNUC__
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+#define ffs(arg) __builtin_ffs(arg)
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+#else
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#define ffs(arg) _bit_scan_forward(arg)
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#endif
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+#endif
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/* Create the direction numbers, based on the primitive polynomials. */
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void initSobolDirectionVectors(int n_dimensions, unsigned int *directions)
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