code: public Matrix4f rotateX(float ang, Matrix4f dest) {
          if ((properties & PROPERTY_IDENTITY) != 0)
              return dest.rotationX(ang);
          float sin, cos;
          sin = (float) Math.sin(ang);
          cos = (float) Math.cosFromSin(sin, ang);
          float rm11 = cos;
          float rm12 = sin;
          float rm21 = -sin;
          float rm22 = cos;
  
          // add temporaries for dependent values
          float nm10 = m10 * rm11 + m20 * rm12;
          float nm11 = m11 * rm11 + m21 * rm12;
          float nm12 = m12 * rm11 + m22 * rm12;
          float nm13 = m13 * rm11 + m23 * rm12;
          // set non-dependent values directly
          dest._m20(m10 * rm21 + m20 * rm22);
          dest._m21(m11 * rm21 + m21 * rm22);
          dest._m22(m12 * rm21 + m22 * rm22);
          dest._m23(m13 * rm21 + m23 * rm22);
          // set other values
          dest._m10(nm10);
          dest._m11(nm11);
          dest._m12(nm12);
          dest._m13(nm13);
          dest._m00(m00);
          dest._m01(m01);
          dest._m02(m02);
          dest._m03(m03);
          dest._m30(m30);
          dest._m31(m31);
          dest._m32(m32);
          dest._m33(m33);
          dest._properties(properties & ~(PROPERTY_PERSPECTIVE | PROPERTY_IDENTITY | PROPERTY_TRANSLATION));
          return dest;
      }
docs: /* (non-Javadoc)
  @see org.joml.Matrix4fc#rotateX(float, org.joml.Matrix4f)