3dgfx code, untested

[metatoy] / src / libc / math.h

diff --git a/src/libc/math.h b/src/libc/math.h
index e3b0f23..2674a9b 100644 (file)
--- a/src/libc/math.h
+++ b/src/libc/math.h
@@ -30,6 +30,7 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #define fmod(x, y)     __builtin_fmod(x, y)
 #define sqrt(x)                __builtin_sqrt(x)
 #define atan2(y, x)    __builtin_atan2(y, x)
+#define acos(x)                __builtin_acos(x)
 
 double pow(double x, double y);