--- a/libtommath/bn_mp_toom_sqr.c	Sat Jun 24 17:50:50 2017 +0800
+++ b/libtommath/bn_mp_toom_sqr.c	Sat Jun 24 22:37:14 2017 +0800
@@ -1,4 +1,4 @@
-#include <tommath.h>
+#include <tommath_private.h>
 #ifdef BN_MP_TOOM_SQR_C
 /* LibTomMath, multiple-precision integer library -- Tom St Denis
  *
@@ -12,7 +12,7 @@
  * The library is free for all purposes without any express
  * guarantee it works.
  *
- * Tom St Denis, [email protected], http://math.libtomcrypt.com
+ * Tom St Denis, [email protected], http://libtom.org
  */
 
 /* squaring using Toom-Cook 3-way algorithm */
@@ -39,7 +39,9 @@
        goto ERR;
     }
     mp_rshd(&a1, B);
-    mp_mod_2d(&a1, DIGIT_BIT * B, &a1);
+    if ((res = mp_mod_2d(&a1, DIGIT_BIT * B, &a1)) != MP_OKAY) {
+       goto ERR;
+    }
 
     if ((res = mp_copy(a, &a2)) != MP_OKAY) {
        goto ERR;
@@ -115,112 +117,112 @@
        using 12 subtractions, 4 shifts, 2 small divisions and 1 small multiplication.
      */
 
-     /* r1 - r4 */
-     if ((res = mp_sub(&w1, &w4, &w1)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* r3 - r0 */
-     if ((res = mp_sub(&w3, &w0, &w3)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* r1/2 */
-     if ((res = mp_div_2(&w1, &w1)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* r3/2 */
-     if ((res = mp_div_2(&w3, &w3)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* r2 - r0 - r4 */
-     if ((res = mp_sub(&w2, &w0, &w2)) != MP_OKAY) {
-        goto ERR;
-     }
-     if ((res = mp_sub(&w2, &w4, &w2)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* r1 - r2 */
-     if ((res = mp_sub(&w1, &w2, &w1)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* r3 - r2 */
-     if ((res = mp_sub(&w3, &w2, &w3)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* r1 - 8r0 */
-     if ((res = mp_mul_2d(&w0, 3, &tmp1)) != MP_OKAY) {
-        goto ERR;
-     }
-     if ((res = mp_sub(&w1, &tmp1, &w1)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* r3 - 8r4 */
-     if ((res = mp_mul_2d(&w4, 3, &tmp1)) != MP_OKAY) {
-        goto ERR;
-     }
-     if ((res = mp_sub(&w3, &tmp1, &w3)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* 3r2 - r1 - r3 */
-     if ((res = mp_mul_d(&w2, 3, &w2)) != MP_OKAY) {
-        goto ERR;
-     }
-     if ((res = mp_sub(&w2, &w1, &w2)) != MP_OKAY) {
-        goto ERR;
-     }
-     if ((res = mp_sub(&w2, &w3, &w2)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* r1 - r2 */
-     if ((res = mp_sub(&w1, &w2, &w1)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* r3 - r2 */
-     if ((res = mp_sub(&w3, &w2, &w3)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* r1/3 */
-     if ((res = mp_div_3(&w1, &w1, NULL)) != MP_OKAY) {
-        goto ERR;
-     }
-     /* r3/3 */
-     if ((res = mp_div_3(&w3, &w3, NULL)) != MP_OKAY) {
-        goto ERR;
-     }
+    /* r1 - r4 */
+    if ((res = mp_sub(&w1, &w4, &w1)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* r3 - r0 */
+    if ((res = mp_sub(&w3, &w0, &w3)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* r1/2 */
+    if ((res = mp_div_2(&w1, &w1)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* r3/2 */
+    if ((res = mp_div_2(&w3, &w3)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* r2 - r0 - r4 */
+    if ((res = mp_sub(&w2, &w0, &w2)) != MP_OKAY) {
+       goto ERR;
+    }
+    if ((res = mp_sub(&w2, &w4, &w2)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* r1 - r2 */
+    if ((res = mp_sub(&w1, &w2, &w1)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* r3 - r2 */
+    if ((res = mp_sub(&w3, &w2, &w3)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* r1 - 8r0 */
+    if ((res = mp_mul_2d(&w0, 3, &tmp1)) != MP_OKAY) {
+       goto ERR;
+    }
+    if ((res = mp_sub(&w1, &tmp1, &w1)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* r3 - 8r4 */
+    if ((res = mp_mul_2d(&w4, 3, &tmp1)) != MP_OKAY) {
+       goto ERR;
+    }
+    if ((res = mp_sub(&w3, &tmp1, &w3)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* 3r2 - r1 - r3 */
+    if ((res = mp_mul_d(&w2, 3, &w2)) != MP_OKAY) {
+       goto ERR;
+    }
+    if ((res = mp_sub(&w2, &w1, &w2)) != MP_OKAY) {
+       goto ERR;
+    }
+    if ((res = mp_sub(&w2, &w3, &w2)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* r1 - r2 */
+    if ((res = mp_sub(&w1, &w2, &w1)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* r3 - r2 */
+    if ((res = mp_sub(&w3, &w2, &w3)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* r1/3 */
+    if ((res = mp_div_3(&w1, &w1, NULL)) != MP_OKAY) {
+       goto ERR;
+    }
+    /* r3/3 */
+    if ((res = mp_div_3(&w3, &w3, NULL)) != MP_OKAY) {
+       goto ERR;
+    }
 
-     /* at this point shift W[n] by B*n */
-     if ((res = mp_lshd(&w1, 1*B)) != MP_OKAY) {
-        goto ERR;
-     }
-     if ((res = mp_lshd(&w2, 2*B)) != MP_OKAY) {
-        goto ERR;
-     }
-     if ((res = mp_lshd(&w3, 3*B)) != MP_OKAY) {
-        goto ERR;
-     }
-     if ((res = mp_lshd(&w4, 4*B)) != MP_OKAY) {
-        goto ERR;
-     }
+    /* at this point shift W[n] by B*n */
+    if ((res = mp_lshd(&w1, 1*B)) != MP_OKAY) {
+       goto ERR;
+    }
+    if ((res = mp_lshd(&w2, 2*B)) != MP_OKAY) {
+       goto ERR;
+    }
+    if ((res = mp_lshd(&w3, 3*B)) != MP_OKAY) {
+       goto ERR;
+    }
+    if ((res = mp_lshd(&w4, 4*B)) != MP_OKAY) {
+       goto ERR;
+    }
 
-     if ((res = mp_add(&w0, &w1, b)) != MP_OKAY) {
-        goto ERR;
-     }
-     if ((res = mp_add(&w2, &w3, &tmp1)) != MP_OKAY) {
-        goto ERR;
-     }
-     if ((res = mp_add(&w4, &tmp1, &tmp1)) != MP_OKAY) {
-        goto ERR;
-     }
-     if ((res = mp_add(&tmp1, b, b)) != MP_OKAY) {
-        goto ERR;
-     }
+    if ((res = mp_add(&w0, &w1, b)) != MP_OKAY) {
+       goto ERR;
+    }
+    if ((res = mp_add(&w2, &w3, &tmp1)) != MP_OKAY) {
+       goto ERR;
+    }
+    if ((res = mp_add(&w4, &tmp1, &tmp1)) != MP_OKAY) {
+       goto ERR;
+    }
+    if ((res = mp_add(&tmp1, b, b)) != MP_OKAY) {
+       goto ERR;
+    }
 
 ERR:
-     mp_clear_multi(&w0, &w1, &w2, &w3, &w4, &a0, &a1, &a2, &tmp1, NULL);
-     return res;
+    mp_clear_multi(&w0, &w1, &w2, &w3, &w4, &a0, &a1, &a2, &tmp1, NULL);
+    return res;
 }
 
 #endif
 
-/* $Source: /cvs/libtom/libtommath/bn_mp_toom_sqr.c,v $ */
-/* $Revision: 1.3 $ */
-/* $Date: 2006/03/31 14:18:44 $ */
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */