From a26f5505de7966684988f6400158d7525ba58609 Mon Sep 17 00:00:00 2001 From: John Darrington <john@darrington.wattle.id.au> Date: Thu, 23 May 2019 07:07:07 +0200 Subject: [PATCH] src/libpspp/hash-functions.c: Add a preprocessor switch to help test hash table implementation. --- src/libpspp/hash-functions.c | 45 +++++++++++++++++++++++++++++++++++- 1 file changed, 44 insertions(+), 1 deletion(-) diff --git a/src/libpspp/hash-functions.c b/src/libpspp/hash-functions.c index 4de7f77791..cb97ba37ed 100644 --- a/src/libpspp/hash-functions.c +++ b/src/libpspp/hash-functions.c @@ -1,5 +1,5 @@ /* PSPP - a program for statistical analysis. - Copyright (C) 1997-9, 2000, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. + Copyright (C) 1997-9, 2000, 2008, 2009, 2010, 2011, 2012, 2019 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -18,6 +18,47 @@ #include "libpspp/hash-functions.h" +#if 0 +/* Enable this code only for testing! Theoretically everything + should still work, but very inefficient hash tables will result, + meaning that the code will be slow. */ +#warning "HASHING FUNCTIONS ARE DISABLED! EXPECT LOTS OF HASH COLLISIONS!!!" + +#include "libpspp/compiler.h" + + +unsigned int +hash_bytes (const void *b UNUSED, size_t s UNUSED, unsigned int basis UNUSED) +{ + return 0; +} + +unsigned int +hash_string (const char *s UNUSED, unsigned int basis UNUSED) +{ + return 0; +} + +unsigned int +hash_int (int i UNUSED, unsigned int basis UNUSED) +{ + return 0; +} + +unsigned int +hash_double (double d UNUSED, unsigned int basis UNUSED) +{ + return 0; +} + +unsigned int +hash_pointer (const void *p UNUSED, unsigned int basis UNUSED) +{ + return 0; +} + +#else + #include <assert.h> #include <ctype.h> #include <math.h> @@ -145,3 +186,5 @@ hash_pointer (const void *p, unsigned int basis) on 64-bit platforms. */ return hash_int ((int) (uintptr_t) p, basis); } + +#endif -- 2.30.2