fix pow(+-0, inf) case http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1515.pdf

[libc-test] / src / math / hypotl.c

diff --git a/src/math/hypotl.c b/src/math/hypotl.c
index 27ca819..cae06dd 100644 (file)
--- a/src/math/hypotl.c
+++ b/src/math/hypotl.c
@@ -40,7 +40,7 @@ int main(void)
                        err++;
                }
                d = ulperrl(y, p->y, p->dy);
-               if (!checkulp(d, p->r)) {
+               if (!checkulp(d, p->r) || (p->r == RN && fabs(d) >= 1.0)) {
                        printf("%s:%d: %s hypotl(%La,%La) want %La got %La ulperr %.3f = %a + %a\n",
                                p->file, p->line, rstr(p->r), p->x, p->x2, p->y, y, d, d-p->dy, p->dy);
                        err++;