/models-ngspice17/bsim3v1/b3v1check.c

https://github.com/henjo/gnucap-models · C · 364 lines · 309 code · 35 blank · 20 comment · 60 complexity · c16f9bfbb7de842fabf8fd832ac70266 MD5 · raw file 

    

  1. /**********
    2. 

  2.  * Copyright 1990 Regents of the University of California. All rights reserved.
    3. 

  3.  * File: b3v1check.c
    4. 

  4.  * Author: 1995 Min-Chie Jeng and Mansun Chan. 
    5. 

  5.  * Modified by Paolo Nenzi 2002
    6. 

  6.  **********/
    7. 

  7.  
    8. 

  8. /* 
    9. 

  9.  * Release Notes: 
    10. 

  10.  * BSIM3v3.1,   Released by yuhua  96/12/08
    11. 

  11.  */
    12. 

  12. 

  13. 

  14. #include "ngspice.h"
    15. 

  15. #include "cktdefs.h"
    16. 

  16. #include "bsim3v1def.h"
    17. 

  17. #include "trandefs.h"
    18. 

  18. #include "const.h"
    19. 

  19. #include "sperror.h"
    20. 

  20. #include "devdefs.h"
    21. 

  21. #include "suffix.h"
    22. 

  22. 

  23. int
    24. 

  24. BSIM3v1checkModel(BSIM3v1model *model, BSIM3v1instance *here, CKTcircuit *ckt)
    25. 

  25. {
    26. 

  26. struct bsim3v1SizeDependParam *pParam;
    27. 

  27. int Fatal_Flag = 0;
    28. 

  28. FILE *fplog;
    29. 

  29.     
    30. 

  30.     if ((fplog = fopen("b3v3_1check.log", "w")) != NULL)
    31. 

  31.     {   pParam = here->pParam;
    32. 

  32. 	fprintf(fplog, "BSIM3V3.1 Parameter Check\n");
    33. 

  33. 	fprintf(fplog, "Model = %s\n", model->BSIM3v1modName);
    34. 

  34. 	fprintf(fplog, "W = %g, L = %g\n", here->BSIM3v1w, here->BSIM3v1l);
    35. 

  35.    	    
    36. 

  36. 

  37.             if (pParam->BSIM3v1nlx < -pParam->BSIM3v1leff)
    38. 

  38. 	    {   fprintf(fplog, "Fatal: Nlx = %g is less than -Leff.\n",
    39. 

  39. 			pParam->BSIM3v1nlx);
    40. 

  40. 	        printf("Fatal: Nlx = %g is less than -Leff.\n",
    41. 

  41. 			pParam->BSIM3v1nlx);
    42. 

  42. 		Fatal_Flag = 1;
    43. 

  43.             }
    44. 

  44. 

  45. 	if (model->BSIM3v1tox <= 0.0)
    46. 

  46. 	{   fprintf(fplog, "Fatal: Tox = %g is not positive.\n",
    47. 

  47. 		    model->BSIM3v1tox);
    48. 

  48. 	    printf("Fatal: Tox = %g is not positive.\n", model->BSIM3v1tox);
    49. 

  49. 	    Fatal_Flag = 1;
    50. 

  50. 	}
    51. 

  51. 

  52. 	if (pParam->BSIM3v1npeak <= 0.0)
    53. 

  53. 	{   fprintf(fplog, "Fatal: Nch = %g is not positive.\n",
    54. 

  54. 		    pParam->BSIM3v1npeak);
    55. 

  55. 	    printf("Fatal: Nch = %g is not positive.\n",
    56. 

  56. 		   pParam->BSIM3v1npeak);
    57. 

  57. 	    Fatal_Flag = 1;
    58. 

  58. 	}
    59. 

  59. 	if (pParam->BSIM3v1nsub <= 0.0)
    60. 

  60. 	{   fprintf(fplog, "Fatal: Nsub = %g is not positive.\n",
    61. 

  61. 		    pParam->BSIM3v1nsub);
    62. 

  62. 	    printf("Fatal: Nsub = %g is not positive.\n",
    63. 

  63. 		   pParam->BSIM3v1nsub);
    64. 

  64. 	    Fatal_Flag = 1;
    65. 

  65. 	}
    66. 

  66. 	if (pParam->BSIM3v1ngate < 0.0)
    67. 

  67. 	{   fprintf(fplog, "Fatal: Ngate = %g is not positive.\n",
    68. 

  68. 		    pParam->BSIM3v1ngate);
    69. 

  69. 	    printf("Fatal: Ngate = %g Ngate is not positive.\n",
    70. 

  70. 		   pParam->BSIM3v1ngate);
    71. 

  71. 	    Fatal_Flag = 1;
    72. 

  72. 	}
    73. 

  73. 	if (pParam->BSIM3v1ngate > 1.e25)
    74. 

  74. 	{   fprintf(fplog, "Fatal: Ngate = %g is too high.\n",
    75. 

  75. 		    pParam->BSIM3v1ngate);
    76. 

  76. 	    printf("Fatal: Ngate = %g Ngate is too high\n",
    77. 

  77. 		   pParam->BSIM3v1ngate);
    78. 

  78. 	    Fatal_Flag = 1;
    79. 

  79. 	}
    80. 

  80. 	if (pParam->BSIM3v1xj <= 0.0)
    81. 

  81. 	{   fprintf(fplog, "Fatal: Xj = %g is not positive.\n",
    82. 

  82. 		    pParam->BSIM3v1xj);
    83. 

  83. 	    printf("Fatal: Xj = %g is not positive.\n", pParam->BSIM3v1xj);
    84. 

  84. 	    Fatal_Flag = 1;
    85. 

  85. 	}
    86. 

  86. 

  87. 	if (pParam->BSIM3v1dvt1 < 0.0)
    88. 

  88. 	{   fprintf(fplog, "Fatal: Dvt1 = %g is negative.\n",
    89. 

  89. 		    pParam->BSIM3v1dvt1);   
    90. 

  90. 	    printf("Fatal: Dvt1 = %g is negative.\n", pParam->BSIM3v1dvt1);   
    91. 

  91. 	    Fatal_Flag = 1;
    92. 

  92. 	}
    93. 

  93. 	    
    94. 

  94. 	if (pParam->BSIM3v1dvt1w < 0.0)
    95. 

  95. 	{   fprintf(fplog, "Fatal: Dvt1w = %g is negative.\n",
    96. 

  96. 		    pParam->BSIM3v1dvt1w);
    97. 

  97. 	    printf("Fatal: Dvt1w = %g is negative.\n", pParam->BSIM3v1dvt1w);
    98. 

  98. 	    Fatal_Flag = 1;
    99. 

  99. 	}
    100. 

  100. 	    
    101. 

  101. 	if (pParam->BSIM3v1w0 == -pParam->BSIM3v1weff)
    102. 

  102. 	{   fprintf(fplog, "Fatal: (W0 + Weff) = 0 cauing divided-by-zero.\n");
    103. 

  103. 	    printf("Fatal: (W0 + Weff) = 0 cauing divided-by-zero.\n");
    104. 

  104. 	    Fatal_Flag = 1;
    105. 

  105.         }   
    106. 

  106. 

  107. 	if (pParam->BSIM3v1dsub < 0.0)
    108. 

  108. 	{   fprintf(fplog, "Fatal: Dsub = %g is negative.\n", pParam->BSIM3v1dsub);
    109. 

  109. 	    printf("Fatal: Dsub = %g is negative.\n", pParam->BSIM3v1dsub);
    110. 

  110. 	    Fatal_Flag = 1;
    111. 

  111. 	}
    112. 

  112. 	if (pParam->BSIM3v1b1 == -pParam->BSIM3v1weff)
    113. 

  113. 	{   fprintf(fplog, "Fatal: (B1 + Weff) = 0 causing divided-by-zero.\n");
    114. 

  114. 	    printf("Fatal: (B1 + Weff) = 0 causing divided-by-zero.\n");
    115. 

  115. 	    Fatal_Flag = 1;
    116. 

  116.         }  
    117. 

  117.         if (pParam->BSIM3v1u0temp <= 0.0)
    118. 

  118. 	{   fprintf(fplog, "Fatal: u0 at current temperature = %g is not positive.\n", pParam->BSIM3v1u0temp);
    119. 

  119. 	    printf("Fatal: u0 at current temperature = %g is not positive.\n",
    120. 

  120. 		   pParam->BSIM3v1u0temp);
    121. 

  121. 	    Fatal_Flag = 1;
    122. 

  122.         }
    123. 

  123.     
    124. 

  124. /* Check delta parameter */      
    125. 

  125.         if (pParam->BSIM3v1delta < 0.0)
    126. 

  126. 	{   fprintf(fplog, "Fatal: Delta = %g is less than zero.\n",
    127. 

  127. 		    pParam->BSIM3v1delta);
    128. 

  128. 	    printf("Fatal: Delta = %g is less than zero.\n", pParam->BSIM3v1delta);
    129. 

  129. 	    Fatal_Flag = 1;
    130. 

  130.         }      
    131. 

  131. 

  132. 	if (pParam->BSIM3v1vsattemp <= 0.0)
    133. 

  133. 	{   fprintf(fplog, "Fatal: Vsat at current temperature = %g is not positive.\n", pParam->BSIM3v1vsattemp);
    134. 

  134. 	    printf("Fatal: Vsat at current temperature = %g is not positive.\n",
    135. 

  135. 		   pParam->BSIM3v1vsattemp);
    136. 

  136. 	    Fatal_Flag = 1;
    137. 

  137. 	}
    138. 

  138. /* Check Rout parameters */
    139. 

  139. 	if (pParam->BSIM3v1pclm <= 0.0)
    140. 

  140. 	{   fprintf(fplog, "Fatal: Pclm = %g is not positive.\n", pParam->BSIM3v1pclm);
    141. 

  141. 	    printf("Fatal: Pclm = %g is not positive.\n", pParam->BSIM3v1pclm);
    142. 

  142. 	    Fatal_Flag = 1;
    143. 

  143. 	}
    144. 

  144. 

  145. 	if (pParam->BSIM3v1drout < 0.0)
    146. 

  146. 	{   fprintf(fplog, "Fatal: Drout = %g is negative.\n", pParam->BSIM3v1drout);
    147. 

  147. 	    printf("Fatal: Drout = %g is negative.\n", pParam->BSIM3v1drout);
    148. 

  148. 	    Fatal_Flag = 1;
    149. 

  149. 	}
    150. 

  150.       if (model->BSIM3v1unitLengthSidewallJctCap > 0.0 || 
    151. 

  151.             model->BSIM3v1unitLengthGateSidewallJctCap > 0.0)
    152. 

  152.       {
    153. 

  153. 	if (here->BSIM3v1drainPerimeter < pParam->BSIM3v1weff)
    154. 

  154. 	{   fprintf(fplog, "Warning: Pd = %g is less than W.\n",
    155. 

  155. 		    here->BSIM3v1drainPerimeter);
    156. 

  156. 	   printf("Warning: Pd = %g is less than W.\n",
    157. 

  157. 		    here->BSIM3v1drainPerimeter);
    158. 

  158.            here->BSIM3v1drainPerimeter =pParam->BSIM3v1weff;
    159. 

  159. 	}
    160. 

  160. 	if (here->BSIM3v1sourcePerimeter < pParam->BSIM3v1weff)
    161. 

  161. 	{   fprintf(fplog, "Warning: Ps = %g is less than W.\n",
    162. 

  162. 		    here->BSIM3v1sourcePerimeter);
    163. 

  163. 	   printf("Warning: Ps = %g is less than W.\n",
    164. 

  164. 		    here->BSIM3v1sourcePerimeter);
    165. 

  165.            here->BSIM3v1sourcePerimeter =pParam->BSIM3v1weff;
    166. 

  166. 	}
    167. 

  167.       }
    168. 

  168. /* Check capacitance parameters */
    169. 

  169.         if (pParam->BSIM3v1clc < 0.0)
    170. 

  170. 	{   fprintf(fplog, "Fatal: Clc = %g is negative.\n", pParam->BSIM3v1clc);
    171. 

  171. 	    printf("Fatal: Clc = %g is negative.\n", pParam->BSIM3v1clc);
    172. 

  172. 	    Fatal_Flag = 1;
    173. 

  173.         }      
    174. 

  174.       if (model->BSIM3v1paramChk ==1)
    175. 

  175.       {
    176. 

  176. /* Check L and W parameters */ 
    177. 

  177. 	if (pParam->BSIM3v1leff <= 5.0e-8)
    178. 

  178. 	{   fprintf(fplog, "Warning: Leff = %g may be too small.\n",
    179. 

  179. 	            pParam->BSIM3v1leff);
    180. 

  180. 	    printf("Warning: Leff = %g may be too small.\n",
    181. 

  181. 		    pParam->BSIM3v1leff);
    182. 

  182. 	}    
    183. 

  183. 	
    184. 

  184. 	if (pParam->BSIM3v1leffCV <= 5.0e-8)
    185. 

  185. 	{   fprintf(fplog, "Warning: Leff for CV = %g may be too small.\n",
    186. 

  186. 		    pParam->BSIM3v1leffCV);
    187. 

  187. 	    printf("Warning: Leff for CV = %g may be too small.\n",
    188. 

  188. 		   pParam->BSIM3v1leffCV);
    189. 

  189. 	}  
    190. 

  190. 	
    191. 

  191.         if (pParam->BSIM3v1weff <= 1.0e-7)
    192. 

  192. 	{   fprintf(fplog, "Warning: Weff = %g may be too small.\n",
    193. 

  193. 		    pParam->BSIM3v1weff);
    194. 

  194. 	    printf("Warning: Weff = %g may be too small.\n",
    195. 

  195. 		   pParam->BSIM3v1weff);
    196. 

  196. 	}             
    197. 

  197. 	
    198. 

  198. 	if (pParam->BSIM3v1weffCV <= 1.0e-7)
    199. 

  199. 	{   fprintf(fplog, "Warning: Weff for CV = %g may be too small.\n",
    200. 

  200. 		    pParam->BSIM3v1weffCV);
    201. 

  201. 	    printf("Warning: Weff for CV = %g may be too small.\n",
    202. 

  202. 		   pParam->BSIM3v1weffCV);
    203. 

  203. 	}        
    204. 

  204. 	
    205. 

  205. /* Check threshold voltage parameters */
    206. 

  206. 	if (pParam->BSIM3v1nlx < 0.0)
    207. 

  207. 	{   fprintf(fplog, "Warning: Nlx = %g is negative.\n", pParam->BSIM3v1nlx);
    208. 

  208. 	   printf("Warning: Nlx = %g is negative.\n", pParam->BSIM3v1nlx);
    209. 

  209.         }
    210. 

  210. 	 if (model->BSIM3v1tox < 1.0e-9)
    211. 

  211. 	{   fprintf(fplog, "Warning: Tox = %g is less than 10A.\n",
    212. 

  212. 	            model->BSIM3v1tox);
    213. 

  213. 	    printf("Warning: Tox = %g is less than 10A.\n", model->BSIM3v1tox);
    214. 

  214.         }
    215. 

  215. 

  216.         if (pParam->BSIM3v1npeak <= 1.0e15)
    217. 

  217. 	{   fprintf(fplog, "Warning: Nch = %g may be too small.\n",
    218. 

  218. 	            pParam->BSIM3v1npeak);
    219. 

  219. 	    printf("Warning: Nch = %g may be too small.\n",
    220. 

  220. 	           pParam->BSIM3v1npeak);
    221. 

  221. 	}
    222. 

  222. 	else if (pParam->BSIM3v1npeak >= 1.0e21)
    223. 

  223. 	{   fprintf(fplog, "Warning: Nch = %g may be too large.\n",
    224. 

  224. 	            pParam->BSIM3v1npeak);
    225. 

  225. 	    printf("Warning: Nch = %g may be too large.\n",
    226. 

  226. 	           pParam->BSIM3v1npeak);
    227. 

  227. 	}
    228. 

  228. 

  229. 	 if (pParam->BSIM3v1nsub <= 1.0e14)
    230. 

  230. 	{   fprintf(fplog, "Warning: Nsub = %g may be too small.\n",
    231. 

  231. 	            pParam->BSIM3v1nsub);
    232. 

  232. 	    printf("Warning: Nsub = %g may be too small.\n",
    233. 

  233. 	           pParam->BSIM3v1nsub);
    234. 

  234. 	}
    235. 

  235. 	else if (pParam->BSIM3v1nsub >= 1.0e21)
    236. 

  236. 	{   fprintf(fplog, "Warning: Nsub = %g may be too large.\n",
    237. 

  237. 	            pParam->BSIM3v1nsub);
    238. 

  238. 	    printf("Warning: Nsub = %g may be too large.\n",
    239. 

  239. 	           pParam->BSIM3v1nsub);
    240. 

  240. 	}
    241. 

  241. 

  242. 	if ((pParam->BSIM3v1ngate > 0.0) &&
    243. 

  243. 	    (pParam->BSIM3v1ngate <= 1.e18))
    244. 

  244. 	{   fprintf(fplog, "Warning: Ngate = %g is less than 1.E18cm^-3.\n",
    245. 

  245. 	            pParam->BSIM3v1ngate);
    246. 

  246. 	    printf("Warning: Ngate = %g is less than 1.E18cm^-3.\n",
    247. 

  247. 	           pParam->BSIM3v1ngate);
    248. 

  248. 	}
    249. 

  249.        
    250. 

  250.         if (pParam->BSIM3v1dvt0 < 0.0)
    251. 

  251. 	{   fprintf(fplog, "Warning: Dvt0 = %g is negative.\n",
    252. 

  252. 		    pParam->BSIM3v1dvt0);   
    253. 

  253. 	    printf("Warning: Dvt0 = %g is negative.\n", pParam->BSIM3v1dvt0);   
    254. 

  254. 	}
    255. 

  255. 	    
    256. 

  256. 	if (fabs(1.0e-6 / (pParam->BSIM3v1w0 + pParam->BSIM3v1weff)) > 10.0)
    257. 

  257. 	{   fprintf(fplog, "Warning: (W0 + Weff) may be too small.\n");
    258. 

  258. 	    printf("Warning: (W0 + Weff) may be too small.\n");
    259. 

  259.         }
    260. 

  260. 

  261. /* Check subthreshold parameters */
    262. 

  262. 	if (pParam->BSIM3v1nfactor < 0.0)
    263. 

  263. 	{   fprintf(fplog, "Warning: Nfactor = %g is negative.\n",
    264. 

  264. 		    pParam->BSIM3v1nfactor);
    265. 

  265. 	    printf("Warning: Nfactor = %g is negative.\n", pParam->BSIM3v1nfactor);
    266. 

  266. 	}
    267. 

  267. 	if (pParam->BSIM3v1cdsc < 0.0)
    268. 

  268. 	{   fprintf(fplog, "Warning: Cdsc = %g is negative.\n",
    269. 

  269. 		    pParam->BSIM3v1cdsc);
    270. 

  270. 	    printf("Warning: Cdsc = %g is negative.\n", pParam->BSIM3v1cdsc);
    271. 

  271. 	}
    272. 

  272. 	if (pParam->BSIM3v1cdscd < 0.0)
    273. 

  273. 	{   fprintf(fplog, "Warning: Cdscd = %g is negative.\n",
    274. 

  274. 		    pParam->BSIM3v1cdscd);
    275. 

  275. 	    printf("Warning: Cdscd = %g is negative.\n", pParam->BSIM3v1cdscd);
    276. 

  276. 	}
    277. 

  277. /* Check DIBL parameters */
    278. 

  278. 	if (pParam->BSIM3v1eta0 < 0.0)
    279. 

  279. 	{   fprintf(fplog, "Warning: Eta0 = %g is negative.\n",
    280. 

  280. 		    pParam->BSIM3v1eta0); 
    281. 

  281. 	    printf("Warning: Eta0 = %g is negative.\n", pParam->BSIM3v1eta0); 
    282. 

  282. 	}
    283. 

  283. 	      
    284. 

  284. /* Check Abulk parameters */	    
    285. 

  285. 	 if (fabs(1.0e-6 / (pParam->BSIM3v1b1 + pParam->BSIM3v1weff)) > 10.0)
    286. 

  286.        	{   fprintf(fplog, "Warning: (B1 + Weff) may be too small.\n");
    287. 

  287.        	    printf("Warning: (B1 + Weff) may be too small.\n");
    288. 

  288.         }    
    289. 

  289.     
    290. 

  290. 

  291. /* Check Saturation parameters */
    292. 

  292.      	if (pParam->BSIM3v1a2 < 0.01)
    293. 

  293. 	{   fprintf(fplog, "Warning: A2 = %g is too small. Set to 0.01.\n", pParam->BSIM3v1a2);
    294. 

  294. 	    printf("Warning: A2 = %g is too small. Set to 0.01.\n",
    295. 

  295. 		   pParam->BSIM3v1a2);
    296. 

  296. 	    pParam->BSIM3v1a2 = 0.01;
    297. 

  297. 	}
    298. 

  298. 	else if (pParam->BSIM3v1a2 > 1.0)
    299. 

  299. 	{   fprintf(fplog, "Warning: A2 = %g is larger than 1. A2 is set to 1 and A1 is set to 0.\n",
    300. 

  300. 		    pParam->BSIM3v1a2);
    301. 

  301. 	    printf("Warning: A2 = %g is larger than 1. A2 is set to 1 and A1 is set to 0.\n",
    302. 

  302. 		   pParam->BSIM3v1a2);
    303. 

  303. 	    pParam->BSIM3v1a2 = 1.0;
    304. 

  304. 	    pParam->BSIM3v1a1 = 0.0;
    305. 

  305. 

  306. 	}
    307. 

  307. 

  308. 	if (pParam->BSIM3v1rdsw < 0.0)
    309. 

  309. 	{   fprintf(fplog, "Warning: Rdsw = %g is negative. Set to zero.\n",
    310. 

  310. 		    pParam->BSIM3v1rdsw);
    311. 

  311. 	    printf("Warning: Rdsw = %g is negative. Set to zero.\n",
    312. 

  312. 		   pParam->BSIM3v1rdsw);
    313. 

  313. 	    pParam->BSIM3v1rdsw = 0.0;
    314. 

  314. 	    pParam->BSIM3v1rds0 = 0.0;
    315. 

  315. 	}
    316. 

  316. 	else if ((pParam->BSIM3v1rds0 > 0.0) && (pParam->BSIM3v1rds0 < 0.001))
    317. 

  317. 	{   fprintf(fplog, "Warning: Rds at current temperature = %g is less than 0.001 ohm. Set to zero.\n",
    318. 

  318. 		    pParam->BSIM3v1rds0);
    319. 

  319. 	    printf("Warning: Rds at current temperature = %g is less than 0.001 ohm. Set to zero.\n",
    320. 

  320. 		   pParam->BSIM3v1rds0);
    321. 

  321. 	    pParam->BSIM3v1rds0 = 0.0;
    322. 

  322. 	}
    323. 

  323. 	 if (pParam->BSIM3v1vsattemp < 1.0e3)
    324. 

  324. 	{   fprintf(fplog, "Warning: Vsat at current temperature = %g may be too small.\n", pParam->BSIM3v1vsattemp);
    325. 

  325. 	   printf("Warning: Vsat at current temperature = %g may be too small.\n", pParam->BSIM3v1vsattemp);
    326. 

  326. 	}
    327. 

  327. 

  328. 	if (pParam->BSIM3v1pdibl1 < 0.0)
    329. 

  329. 	{   fprintf(fplog, "Warning: Pdibl1 = %g is negative.\n",
    330. 

  330. 		    pParam->BSIM3v1pdibl1);
    331. 

  331. 	    printf("Warning: Pdibl1 = %g is negative.\n", pParam->BSIM3v1pdibl1);
    332. 

  332. 	}
    333. 

  333. 	if (pParam->BSIM3v1pdibl2 < 0.0)
    334. 

  334. 	{   fprintf(fplog, "Warning: Pdibl2 = %g is negative.\n",
    335. 

  335. 		    pParam->BSIM3v1pdibl2);
    336. 

  336. 	    printf("Warning: Pdibl2 = %g is negative.\n", pParam->BSIM3v1pdibl2);
    337. 

  337. 	}
    338. 

  338. /* Check overlap capacitance parameters */
    339. 

  339.         if (model->BSIM3v1cgdo < 0.0)
    340. 

  340. 	{   fprintf(fplog, "Warning: cgdo = %g is negative. Set to zero.\n", model->BSIM3v1cgdo);
    341. 

  341. 	    printf("Warning: cgdo = %g is negative. Set to zero.\n", model->BSIM3v1cgdo);
    342. 

  342. 	    model->BSIM3v1cgdo = 0.0;
    343. 

  343.         }      
    344. 

  344.         if (model->BSIM3v1cgso < 0.0)
    345. 

  345. 	{   fprintf(fplog, "Warning: cgso = %g is negative. Set to zero.\n", model->BSIM3v1cgso);
    346. 

  346. 	    printf("Warning: cgso = %g is negative. Set to zero.\n", model->BSIM3v1cgso);
    347. 

  347. 	    model->BSIM3v1cgso = 0.0;
    348. 

  348.         }      
    349. 

  349.         if (model->BSIM3v1cgbo < 0.0)
    350. 

  350. 	{   fprintf(fplog, "Warning: cgbo = %g is negative. Set to zero.\n", model->BSIM3v1cgbo);
    351. 

  351. 	    printf("Warning: cgbo = %g is negative. Set to zero.\n", model->BSIM3v1cgbo);
    352. 

  352. 	    model->BSIM3v1cgbo = 0.0;
    353. 

  353.         }
    354. 

  354. 

  355.      }/* loop for the parameter check for warning messages */      
    356. 

  356. 	fclose(fplog);
    357. 

  357.     }
    358. 

  358.     else
    359. 

  359.     {   fprintf(stderr, "Warning: Can't open log file. Parameter checking skipped.\n");
    360. 

  360.     }
    361. 

  361. 

  362.     return(Fatal_Flag);
    363. 

  363. }
    364.