MonetDB: Oct2020 - Check for division by 0.

[Sjoerd Mullender]

Changeset: 37793b132126 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=37793b132126
Modified Files:
        monetdb5/modules/kernel/mmath.c
Branch: Oct2020
Log Message:

Check for division by 0.


diffs (24 lines):

diff --git a/monetdb5/modules/kernel/mmath.c b/monetdb5/modules/kernel/mmath.c
--- a/monetdb5/modules/kernel/mmath.c
+++ b/monetdb5/modules/kernel/mmath.c
@@ -30,12 +30,20 @@
 double
 logbs(double base, double x)
 {
+       if (base == 1) {
+               feraiseexcept(FE_DIVBYZERO);
+               return INFINITY;
+       }
        return log(x) / log(base);
 }
 
 float
 logbsf(float base, float x)
 {
+       if (base == 1) {
+               feraiseexcept(FE_DIVBYZERO);
+               return INFINITY;
+       }
        return logf(x) / logf(base);
 }
 
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