fix: replace trunc with floor for accurate integer conversion in hypergeometric CDF

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---

Author: whizzel

lib/node_modules/@stdlib/stats/base/dists/hypergeometric/cdf/src/main.c

@@ -20,7 +20,7 @@
 #include "stdlib/math/base/assert/is_nan.h"
 #include "stdlib/math/base/assert/is_nonnegative_integer.h"
 #include "stdlib/math/base/assert/is_infinite.h"
-#include "stdlib/math/base/special/trunc.h"
+#include "stdlib/math/base/special/floor.h"
 #include "stdlib/math/base/special/max.h"
 #include "stdlib/math/base/special/min.h"
 
@@ -74,7 +74,7 @@ double stdlib_base_dists_hypergeometric_cdf(
 	Ni = (int32_t)N;
 	Ki = (int32_t)K;
 	ni = (int32_t)n;
-	xi = (int32_t)stdlib_base_trunc( x );
+	xi = (int32_t)stdlib_base_floor( x );
 
 	lower = stdlib_base_max( 0, ni+Ki-Ni );
 	upper = stdlib_base_min( ni, Ki );