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-rw-r--r--src/math/tgamma.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/math/tgamma.c b/src/math/tgamma.c
index 691e86a4..f91af735 100644
--- a/src/math/tgamma.c
+++ b/src/math/tgamma.c
@@ -137,6 +137,7 @@ double tgamma(double x)
/* x =< -184: tgamma(x)=+-0 with underflow */
if (absx >= 184) {
if (x < 0) {
+ FORCE_EVAL((float)(0x1p-126/x));
if (floor(x) * 0.5 == floor(x * 0.5))
return 0;
return -0.0;