use sqrt(), not sqrtf() for Windows
diff --git a/progs/demos/arbfslight.c b/progs/demos/arbfslight.c
index 374de56..69575f0 100644
--- a/progs/demos/arbfslight.c
+++ b/progs/demos/arbfslight.c
@@ -62,7 +62,7 @@
static void normalize (GLfloat *dst, const GLfloat *src)
{
- GLfloat len = sqrtf (src[0] * src[0] + src[1] * src[1] + src[2] * src[2]);
+ GLfloat len = sqrt (src[0] * src[0] + src[1] * src[1] + src[2] * src[2]);
dst[0] = src[0] / len;
dst[1] = src[1] / len;
dst[2] = src[2] / len;
diff --git a/progs/demos/fslight.c b/progs/demos/fslight.c
index 493ce0e..e6d83bf 100644
--- a/progs/demos/fslight.c
+++ b/progs/demos/fslight.c
@@ -58,7 +58,7 @@
static void
normalize(GLfloat *dst, const GLfloat *src)
{
- GLfloat len = sqrtf(src[0] * src[0] + src[1] * src[1] + src[2] * src[2]);
+ GLfloat len = sqrt(src[0] * src[0] + src[1] * src[1] + src[2] * src[2]);
dst[0] = src[0] / len;
dst[1] = src[1] / len;
dst[2] = src[2] / len;