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-rw-r--r--src/math/erf.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/math/erf.c b/src/math/erf.c
index 33059480..2115982b 100644
--- a/src/math/erf.c
+++ b/src/math/erf.c
@@ -4,6 +4,12 @@
TYPE TGFN(erf)(TYPE x)
{
+ switch (fpclassify(x)) {
+ case FP_ZERO: return x;
+ case FP_INFINITE: return signbit(x) ? -1.0 : 1.0;
+ default: break;
+ }
+
return x;
}