220    float n0, n1;  in _mesa_noise1()  local
225    n0 = t0 * t0 * grad1(perm[i0 & 0xff], x0);  in _mesa_noise1()
233    return 0.25f * (n0 + n1);  in _mesa_noise1()
244    float n0, n1, n2;            /* Noise contributions from the three corners */  in _mesa_noise2()  local
291       n0 = 0.0f;  in _mesa_noise2()
294       n0 = t0 * t0 * grad2(perm[ii + perm[jj]], x0, y0);  in _mesa_noise2()
315    return 40.0f * (n0 + n1 + n2);       /* TODO: The scale factor is preliminary! */  in _mesa_noise2()
327    float n0, n1, n2, n3;        /* Noise contributions from the four corners */  in _mesa_noise3()  local
433       n0 = 0.0f;  in _mesa_noise3()
436       n0 = t0 * t0 * grad3(perm[ii + perm[jj + perm[kk]]], x0, y0, z0);  in _mesa_noise3()
472    return 32.0f * (n0 + n1 + n2 + n3);  /* TODO: The scale factor is preliminary! */  in _mesa_noise3()
484    float n0, n1, n2, n3, n4;    /* Noise contributions from the five corners */  in _mesa_noise4()  local
584       n0 = 0.0f;  in _mesa_noise4()
587       n0 =  in _mesa_noise4()
637    return 27.0f * (n0 + n1 + n2 + n3 + n4);     /* TODO: The scale factor is preliminary! */  in _mesa_noise4()