runtime: Fix printing -Inf

R=rsc
CC=golang-dev
https://golang.org/cl/1258044

diff --git a/src/pkg/runtime/print.c b/src/pkg/runtime/print.c
index 12484329ebbe734436592425d3c7bd7a8221b7a9..aa207e312468151cdaecaad5ada9de9f16eacf47 100644 (file)
--- a/src/pkg/runtime/print.c
+++ b/src/pkg/runtime/print.c
@@ -200,12 +200,12 @@ void
                write(fd, "NaN", 3);
                return;
        }
-       if(isInf(v, 0)) {
+       if(isInf(v, 1)) {
                write(fd, "+Inf", 4);
                return;
        }
        if(isInf(v, -1)) {
-               write(fd, "+Inf", 4);
+               write(fd, "-Inf", 4);
                return;
        }