X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Fmoments.c;h=e289e8aec0ef27c2372e2c007eeb30e6b2f6d469;hb=81579d9e9f994fb2908f50af41c3eb033d216e58;hp=2934dd7ad5a547807b7395af925def288f83cb28;hpb=43b1296aafe7582e7dbe6c2b6a8b478d7d9b0fcf;p=pspp-builds.git diff --git a/src/math/moments.c b/src/math/moments.c index 2934dd7a..e289e8ae 100644 --- a/src/math/moments.c +++ b/src/math/moments.c @@ -1,5 +1,5 @@ /* PSPP - a program for statistical analysis. - Copyright (C) 1997-9, 2000 Free Software Foundation, Inc. + Copyright (C) 1997-9, 2000, 2010, 2011 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 @@ -15,13 +15,18 @@ along with this program. If not, see . */ #include -#include "moments.h" + +#include "math/moments.h" + #include #include #include -#include -#include -#include + +#include "data/val-type.h" +#include "data/value.h" +#include "libpspp/misc.h" + +#include "gl/xalloc.h" #include "gettext.h" #define _(msgid) gettext (msgid) @@ -47,13 +52,13 @@ calc_moments (enum moment max_moment, /* From _SPSS Statistical Algorithms, 2nd ed., 0-918469-89-9, section "DESCRIPTIVES". */ - if (fabs (*variance) >= 1e-20) + if (fabs (s2) >= 1e-20) { if (max_moment >= MOMENT_SKEWNESS && skewness != NULL && w > 2.) { double s3 = s2 * sqrt (s2); double g1 = (w * d3) / ((w - 1.0) * (w - 2.0) * s3); - if (finite (g1)) + if (isfinite (g1)) *skewness = g1; } if (max_moment >= MOMENT_KURTOSIS && kurtosis != NULL && w > 3.) @@ -61,7 +66,7 @@ calc_moments (enum moment max_moment, double den = (w - 2.) * (w - 3.) * pow2 (s2); double g2 = (w * (w + 1) * d4 / (w - 1.) / den - 3. * pow2 (d2) / den); - if (finite (g2)) + if (isfinite (g2)) *kurtosis = g2; } }