1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 hwmon.h - part of lm_sensors, Linux kernel modules for hardware monitoring 4 5 This file declares helper functions for the sysfs class "hwmon", 6 for use by sensors drivers. 7 8 Copyright (C) 2005 Mark M. Hoffman <mhoffman@lightlink.com> 9 10 */ 11 12 #ifndef _HWMON_H_ 13 #define _HWMON_H_ 14 15 #include <linux/bitops.h> 16 #include <linux/cleanup.h> 17 18 struct device; 19 struct attribute_group; 20 21 enum hwmon_sensor_types { 22 hwmon_chip, 23 hwmon_temp, 24 hwmon_in, 25 hwmon_curr, 26 hwmon_power, 27 hwmon_energy, 28 hwmon_energy64, 29 hwmon_humidity, 30 hwmon_fan, 31 hwmon_pwm, 32 hwmon_intrusion, 33 hwmon_max, 34 }; 35 36 enum hwmon_chip_attributes { 37 hwmon_chip_temp_reset_history, 38 hwmon_chip_in_reset_history, 39 hwmon_chip_curr_reset_history, 40 hwmon_chip_power_reset_history, 41 hwmon_chip_register_tz, 42 hwmon_chip_update_interval, 43 hwmon_chip_update_interval_us, 44 hwmon_chip_alarms, 45 hwmon_chip_samples, 46 hwmon_chip_curr_samples, 47 hwmon_chip_in_samples, 48 hwmon_chip_power_samples, 49 hwmon_chip_temp_samples, 50 hwmon_chip_beep_enable, 51 hwmon_chip_pec, 52 }; 53 54 #define HWMON_C_TEMP_RESET_HISTORY BIT(hwmon_chip_temp_reset_history) 55 #define HWMON_C_IN_RESET_HISTORY BIT(hwmon_chip_in_reset_history) 56 #define HWMON_C_CURR_RESET_HISTORY BIT(hwmon_chip_curr_reset_history) 57 #define HWMON_C_POWER_RESET_HISTORY BIT(hwmon_chip_power_reset_history) 58 #define HWMON_C_REGISTER_TZ BIT(hwmon_chip_register_tz) 59 #define HWMON_C_UPDATE_INTERVAL BIT(hwmon_chip_update_interval) 60 #define HWMON_C_UPDATE_INTERVAL_US BIT(hwmon_chip_update_interval_us) 61 #define HWMON_C_ALARMS BIT(hwmon_chip_alarms) 62 #define HWMON_C_SAMPLES BIT(hwmon_chip_samples) 63 #define HWMON_C_CURR_SAMPLES BIT(hwmon_chip_curr_samples) 64 #define HWMON_C_IN_SAMPLES BIT(hwmon_chip_in_samples) 65 #define HWMON_C_POWER_SAMPLES BIT(hwmon_chip_power_samples) 66 #define HWMON_C_TEMP_SAMPLES BIT(hwmon_chip_temp_samples) 67 #define HWMON_C_BEEP_ENABLE BIT(hwmon_chip_beep_enable) 68 #define HWMON_C_PEC BIT(hwmon_chip_pec) 69 70 enum hwmon_temp_attributes { 71 hwmon_temp_enable, 72 hwmon_temp_input, 73 hwmon_temp_type, 74 hwmon_temp_lcrit, 75 hwmon_temp_lcrit_hyst, 76 hwmon_temp_min, 77 hwmon_temp_min_hyst, 78 hwmon_temp_max, 79 hwmon_temp_max_hyst, 80 hwmon_temp_crit, 81 hwmon_temp_crit_hyst, 82 hwmon_temp_emergency, 83 hwmon_temp_emergency_hyst, 84 hwmon_temp_alarm, 85 hwmon_temp_lcrit_alarm, 86 hwmon_temp_min_alarm, 87 hwmon_temp_max_alarm, 88 hwmon_temp_crit_alarm, 89 hwmon_temp_emergency_alarm, 90 hwmon_temp_fault, 91 hwmon_temp_offset, 92 hwmon_temp_label, 93 hwmon_temp_lowest, 94 hwmon_temp_highest, 95 hwmon_temp_reset_history, 96 hwmon_temp_rated_min, 97 hwmon_temp_rated_max, 98 hwmon_temp_beep, 99 }; 100 101 #define HWMON_T_ENABLE BIT(hwmon_temp_enable) 102 #define HWMON_T_INPUT BIT(hwmon_temp_input) 103 #define HWMON_T_TYPE BIT(hwmon_temp_type) 104 #define HWMON_T_LCRIT BIT(hwmon_temp_lcrit) 105 #define HWMON_T_LCRIT_HYST BIT(hwmon_temp_lcrit_hyst) 106 #define HWMON_T_MIN BIT(hwmon_temp_min) 107 #define HWMON_T_MIN_HYST BIT(hwmon_temp_min_hyst) 108 #define HWMON_T_MAX BIT(hwmon_temp_max) 109 #define HWMON_T_MAX_HYST BIT(hwmon_temp_max_hyst) 110 #define HWMON_T_CRIT BIT(hwmon_temp_crit) 111 #define HWMON_T_CRIT_HYST BIT(hwmon_temp_crit_hyst) 112 #define HWMON_T_EMERGENCY BIT(hwmon_temp_emergency) 113 #define HWMON_T_EMERGENCY_HYST BIT(hwmon_temp_emergency_hyst) 114 #define HWMON_T_ALARM BIT(hwmon_temp_alarm) 115 #define HWMON_T_MIN_ALARM BIT(hwmon_temp_min_alarm) 116 #define HWMON_T_MAX_ALARM BIT(hwmon_temp_max_alarm) 117 #define HWMON_T_CRIT_ALARM BIT(hwmon_temp_crit_alarm) 118 #define HWMON_T_LCRIT_ALARM BIT(hwmon_temp_lcrit_alarm) 119 #define HWMON_T_EMERGENCY_ALARM BIT(hwmon_temp_emergency_alarm) 120 #define HWMON_T_FAULT BIT(hwmon_temp_fault) 121 #define HWMON_T_OFFSET BIT(hwmon_temp_offset) 122 #define HWMON_T_LABEL BIT(hwmon_temp_label) 123 #define HWMON_T_LOWEST BIT(hwmon_temp_lowest) 124 #define HWMON_T_HIGHEST BIT(hwmon_temp_highest) 125 #define HWMON_T_RESET_HISTORY BIT(hwmon_temp_reset_history) 126 #define HWMON_T_RATED_MIN BIT(hwmon_temp_rated_min) 127 #define HWMON_T_RATED_MAX BIT(hwmon_temp_rated_max) 128 #define HWMON_T_BEEP BIT(hwmon_temp_beep) 129 130 enum hwmon_in_attributes { 131 hwmon_in_enable, 132 hwmon_in_input, 133 hwmon_in_min, 134 hwmon_in_max, 135 hwmon_in_lcrit, 136 hwmon_in_crit, 137 hwmon_in_average, 138 hwmon_in_lowest, 139 hwmon_in_highest, 140 hwmon_in_reset_history, 141 hwmon_in_label, 142 hwmon_in_alarm, 143 hwmon_in_min_alarm, 144 hwmon_in_max_alarm, 145 hwmon_in_lcrit_alarm, 146 hwmon_in_crit_alarm, 147 hwmon_in_rated_min, 148 hwmon_in_rated_max, 149 hwmon_in_beep, 150 hwmon_in_fault, 151 }; 152 153 #define HWMON_I_ENABLE BIT(hwmon_in_enable) 154 #define HWMON_I_INPUT BIT(hwmon_in_input) 155 #define HWMON_I_MIN BIT(hwmon_in_min) 156 #define HWMON_I_MAX BIT(hwmon_in_max) 157 #define HWMON_I_LCRIT BIT(hwmon_in_lcrit) 158 #define HWMON_I_CRIT BIT(hwmon_in_crit) 159 #define HWMON_I_AVERAGE BIT(hwmon_in_average) 160 #define HWMON_I_LOWEST BIT(hwmon_in_lowest) 161 #define HWMON_I_HIGHEST BIT(hwmon_in_highest) 162 #define HWMON_I_RESET_HISTORY BIT(hwmon_in_reset_history) 163 #define HWMON_I_LABEL BIT(hwmon_in_label) 164 #define HWMON_I_ALARM BIT(hwmon_in_alarm) 165 #define HWMON_I_MIN_ALARM BIT(hwmon_in_min_alarm) 166 #define HWMON_I_MAX_ALARM BIT(hwmon_in_max_alarm) 167 #define HWMON_I_LCRIT_ALARM BIT(hwmon_in_lcrit_alarm) 168 #define HWMON_I_CRIT_ALARM BIT(hwmon_in_crit_alarm) 169 #define HWMON_I_RATED_MIN BIT(hwmon_in_rated_min) 170 #define HWMON_I_RATED_MAX BIT(hwmon_in_rated_max) 171 #define HWMON_I_BEEP BIT(hwmon_in_beep) 172 #define HWMON_I_FAULT BIT(hwmon_in_fault) 173 174 enum hwmon_curr_attributes { 175 hwmon_curr_enable, 176 hwmon_curr_input, 177 hwmon_curr_min, 178 hwmon_curr_max, 179 hwmon_curr_lcrit, 180 hwmon_curr_crit, 181 hwmon_curr_average, 182 hwmon_curr_lowest, 183 hwmon_curr_highest, 184 hwmon_curr_reset_history, 185 hwmon_curr_label, 186 hwmon_curr_alarm, 187 hwmon_curr_min_alarm, 188 hwmon_curr_max_alarm, 189 hwmon_curr_lcrit_alarm, 190 hwmon_curr_crit_alarm, 191 hwmon_curr_rated_min, 192 hwmon_curr_rated_max, 193 hwmon_curr_beep, 194 }; 195 196 #define HWMON_C_ENABLE BIT(hwmon_curr_enable) 197 #define HWMON_C_INPUT BIT(hwmon_curr_input) 198 #define HWMON_C_MIN BIT(hwmon_curr_min) 199 #define HWMON_C_MAX BIT(hwmon_curr_max) 200 #define HWMON_C_LCRIT BIT(hwmon_curr_lcrit) 201 #define HWMON_C_CRIT BIT(hwmon_curr_crit) 202 #define HWMON_C_AVERAGE BIT(hwmon_curr_average) 203 #define HWMON_C_LOWEST BIT(hwmon_curr_lowest) 204 #define HWMON_C_HIGHEST BIT(hwmon_curr_highest) 205 #define HWMON_C_RESET_HISTORY BIT(hwmon_curr_reset_history) 206 #define HWMON_C_LABEL BIT(hwmon_curr_label) 207 #define HWMON_C_ALARM BIT(hwmon_curr_alarm) 208 #define HWMON_C_MIN_ALARM BIT(hwmon_curr_min_alarm) 209 #define HWMON_C_MAX_ALARM BIT(hwmon_curr_max_alarm) 210 #define HWMON_C_LCRIT_ALARM BIT(hwmon_curr_lcrit_alarm) 211 #define HWMON_C_CRIT_ALARM BIT(hwmon_curr_crit_alarm) 212 #define HWMON_C_RATED_MIN BIT(hwmon_curr_rated_min) 213 #define HWMON_C_RATED_MAX BIT(hwmon_curr_rated_max) 214 #define HWMON_C_BEEP BIT(hwmon_curr_beep) 215 216 enum hwmon_power_attributes { 217 hwmon_power_enable, 218 hwmon_power_average, 219 hwmon_power_average_interval, 220 hwmon_power_average_interval_max, 221 hwmon_power_average_interval_min, 222 hwmon_power_average_highest, 223 hwmon_power_average_lowest, 224 hwmon_power_average_max, 225 hwmon_power_average_min, 226 hwmon_power_input, 227 hwmon_power_input_highest, 228 hwmon_power_input_lowest, 229 hwmon_power_reset_history, 230 hwmon_power_accuracy, 231 hwmon_power_cap, 232 hwmon_power_cap_hyst, 233 hwmon_power_cap_max, 234 hwmon_power_cap_min, 235 hwmon_power_min, 236 hwmon_power_max, 237 hwmon_power_crit, 238 hwmon_power_lcrit, 239 hwmon_power_label, 240 hwmon_power_alarm, 241 hwmon_power_cap_alarm, 242 hwmon_power_min_alarm, 243 hwmon_power_max_alarm, 244 hwmon_power_lcrit_alarm, 245 hwmon_power_crit_alarm, 246 hwmon_power_rated_min, 247 hwmon_power_rated_max, 248 }; 249 250 #define HWMON_P_ENABLE BIT(hwmon_power_enable) 251 #define HWMON_P_AVERAGE BIT(hwmon_power_average) 252 #define HWMON_P_AVERAGE_INTERVAL BIT(hwmon_power_average_interval) 253 #define HWMON_P_AVERAGE_INTERVAL_MAX BIT(hwmon_power_average_interval_max) 254 #define HWMON_P_AVERAGE_INTERVAL_MIN BIT(hwmon_power_average_interval_min) 255 #define HWMON_P_AVERAGE_HIGHEST BIT(hwmon_power_average_highest) 256 #define HWMON_P_AVERAGE_LOWEST BIT(hwmon_power_average_lowest) 257 #define HWMON_P_AVERAGE_MAX BIT(hwmon_power_average_max) 258 #define HWMON_P_AVERAGE_MIN BIT(hwmon_power_average_min) 259 #define HWMON_P_INPUT BIT(hwmon_power_input) 260 #define HWMON_P_INPUT_HIGHEST BIT(hwmon_power_input_highest) 261 #define HWMON_P_INPUT_LOWEST BIT(hwmon_power_input_lowest) 262 #define HWMON_P_RESET_HISTORY BIT(hwmon_power_reset_history) 263 #define HWMON_P_ACCURACY BIT(hwmon_power_accuracy) 264 #define HWMON_P_CAP BIT(hwmon_power_cap) 265 #define HWMON_P_CAP_HYST BIT(hwmon_power_cap_hyst) 266 #define HWMON_P_CAP_MAX BIT(hwmon_power_cap_max) 267 #define HWMON_P_CAP_MIN BIT(hwmon_power_cap_min) 268 #define HWMON_P_MIN BIT(hwmon_power_min) 269 #define HWMON_P_MAX BIT(hwmon_power_max) 270 #define HWMON_P_LCRIT BIT(hwmon_power_lcrit) 271 #define HWMON_P_CRIT BIT(hwmon_power_crit) 272 #define HWMON_P_LABEL BIT(hwmon_power_label) 273 #define HWMON_P_ALARM BIT(hwmon_power_alarm) 274 #define HWMON_P_CAP_ALARM BIT(hwmon_power_cap_alarm) 275 #define HWMON_P_MIN_ALARM BIT(hwmon_power_min_alarm) 276 #define HWMON_P_MAX_ALARM BIT(hwmon_power_max_alarm) 277 #define HWMON_P_LCRIT_ALARM BIT(hwmon_power_lcrit_alarm) 278 #define HWMON_P_CRIT_ALARM BIT(hwmon_power_crit_alarm) 279 #define HWMON_P_RATED_MIN BIT(hwmon_power_rated_min) 280 #define HWMON_P_RATED_MAX BIT(hwmon_power_rated_max) 281 282 enum hwmon_energy_attributes { 283 hwmon_energy_enable, 284 hwmon_energy_input, 285 hwmon_energy_label, 286 }; 287 288 #define HWMON_E_ENABLE BIT(hwmon_energy_enable) 289 #define HWMON_E_INPUT BIT(hwmon_energy_input) 290 #define HWMON_E_LABEL BIT(hwmon_energy_label) 291 292 enum hwmon_humidity_attributes { 293 hwmon_humidity_enable, 294 hwmon_humidity_input, 295 hwmon_humidity_label, 296 hwmon_humidity_min, 297 hwmon_humidity_min_hyst, 298 hwmon_humidity_max, 299 hwmon_humidity_max_hyst, 300 hwmon_humidity_alarm, 301 hwmon_humidity_fault, 302 hwmon_humidity_rated_min, 303 hwmon_humidity_rated_max, 304 hwmon_humidity_min_alarm, 305 hwmon_humidity_max_alarm, 306 }; 307 308 #define HWMON_H_ENABLE BIT(hwmon_humidity_enable) 309 #define HWMON_H_INPUT BIT(hwmon_humidity_input) 310 #define HWMON_H_LABEL BIT(hwmon_humidity_label) 311 #define HWMON_H_MIN BIT(hwmon_humidity_min) 312 #define HWMON_H_MIN_HYST BIT(hwmon_humidity_min_hyst) 313 #define HWMON_H_MAX BIT(hwmon_humidity_max) 314 #define HWMON_H_MAX_HYST BIT(hwmon_humidity_max_hyst) 315 #define HWMON_H_ALARM BIT(hwmon_humidity_alarm) 316 #define HWMON_H_FAULT BIT(hwmon_humidity_fault) 317 #define HWMON_H_RATED_MIN BIT(hwmon_humidity_rated_min) 318 #define HWMON_H_RATED_MAX BIT(hwmon_humidity_rated_max) 319 #define HWMON_H_MIN_ALARM BIT(hwmon_humidity_min_alarm) 320 #define HWMON_H_MAX_ALARM BIT(hwmon_humidity_max_alarm) 321 322 enum hwmon_fan_attributes { 323 hwmon_fan_enable, 324 hwmon_fan_input, 325 hwmon_fan_label, 326 hwmon_fan_min, 327 hwmon_fan_max, 328 hwmon_fan_div, 329 hwmon_fan_pulses, 330 hwmon_fan_target, 331 hwmon_fan_alarm, 332 hwmon_fan_min_alarm, 333 hwmon_fan_max_alarm, 334 hwmon_fan_fault, 335 hwmon_fan_beep, 336 }; 337 338 #define HWMON_F_ENABLE BIT(hwmon_fan_enable) 339 #define HWMON_F_INPUT BIT(hwmon_fan_input) 340 #define HWMON_F_LABEL BIT(hwmon_fan_label) 341 #define HWMON_F_MIN BIT(hwmon_fan_min) 342 #define HWMON_F_MAX BIT(hwmon_fan_max) 343 #define HWMON_F_DIV BIT(hwmon_fan_div) 344 #define HWMON_F_PULSES BIT(hwmon_fan_pulses) 345 #define HWMON_F_TARGET BIT(hwmon_fan_target) 346 #define HWMON_F_ALARM BIT(hwmon_fan_alarm) 347 #define HWMON_F_MIN_ALARM BIT(hwmon_fan_min_alarm) 348 #define HWMON_F_MAX_ALARM BIT(hwmon_fan_max_alarm) 349 #define HWMON_F_FAULT BIT(hwmon_fan_fault) 350 #define HWMON_F_BEEP BIT(hwmon_fan_beep) 351 352 enum hwmon_pwm_attributes { 353 hwmon_pwm_input, 354 hwmon_pwm_enable, 355 hwmon_pwm_mode, 356 hwmon_pwm_freq, 357 hwmon_pwm_auto_channels_temp, 358 }; 359 360 #define HWMON_PWM_INPUT BIT(hwmon_pwm_input) 361 #define HWMON_PWM_ENABLE BIT(hwmon_pwm_enable) 362 #define HWMON_PWM_MODE BIT(hwmon_pwm_mode) 363 #define HWMON_PWM_FREQ BIT(hwmon_pwm_freq) 364 #define HWMON_PWM_AUTO_CHANNELS_TEMP BIT(hwmon_pwm_auto_channels_temp) 365 366 enum hwmon_intrusion_attributes { 367 hwmon_intrusion_alarm, 368 hwmon_intrusion_beep, 369 }; 370 #define HWMON_INTRUSION_ALARM BIT(hwmon_intrusion_alarm) 371 #define HWMON_INTRUSION_BEEP BIT(hwmon_intrusion_beep) 372 373 /** 374 * struct hwmon_ops - hwmon device operations 375 * @visible: Static visibility. If non-zero, 'is_visible' is ignored. 376 * @is_visible: Callback to return attribute visibility. Mandatory unless 377 * 'visible' is non-zero. 378 * Parameters are: 379 * @const void *drvdata: 380 * Pointer to driver-private data structure passed 381 * as argument to hwmon_device_register_with_info(). 382 * @type: Sensor type 383 * @attr: Sensor attribute 384 * @channel: 385 * Channel number 386 * The function returns the file permissions. 387 * If the return value is 0, no attribute will be created. 388 * @read: Read callback for data attributes. Mandatory if readable 389 * data attributes are present. 390 * Parameters are: 391 * @dev: Pointer to hardware monitoring device 392 * @type: Sensor type 393 * @attr: Sensor attribute 394 * @channel: 395 * Channel number 396 * @val: Pointer to returned value 397 * The function returns 0 on success or a negative error number. 398 * @read_string: 399 * Read callback for string attributes. Mandatory if string 400 * attributes are present. 401 * Parameters are: 402 * @dev: Pointer to hardware monitoring device 403 * @type: Sensor type 404 * @attr: Sensor attribute 405 * @channel: 406 * Channel number 407 * @str: Pointer to returned string 408 * The function returns 0 on success or a negative error number. 409 * @write: Write callback for data attributes. Mandatory if writeable 410 * data attributes are present. 411 * Parameters are: 412 * @dev: Pointer to hardware monitoring device 413 * @type: Sensor type 414 * @attr: Sensor attribute 415 * @channel: 416 * Channel number 417 * @val: Value to write 418 * The function returns 0 on success or a negative error number. 419 */ 420 struct hwmon_ops { 421 umode_t visible; 422 umode_t (*is_visible)(const void *drvdata, enum hwmon_sensor_types type, 423 u32 attr, int channel); 424 int (*read)(struct device *dev, enum hwmon_sensor_types type, 425 u32 attr, int channel, long *val); 426 int (*read_string)(struct device *dev, enum hwmon_sensor_types type, 427 u32 attr, int channel, const char **str); 428 int (*write)(struct device *dev, enum hwmon_sensor_types type, 429 u32 attr, int channel, long val); 430 }; 431 432 /** 433 * struct hwmon_channel_info - Channel information 434 * @type: Channel type. 435 * @config: Pointer to NULL-terminated list of channel parameters. 436 * Use for per-channel attributes. 437 */ 438 struct hwmon_channel_info { 439 enum hwmon_sensor_types type; 440 const u32 *config; 441 }; 442 443 #define HWMON_CHANNEL_INFO(stype, ...) \ 444 (&(const struct hwmon_channel_info) { \ 445 .type = hwmon_##stype, \ 446 .config = (const u32 []) { \ 447 __VA_ARGS__, 0 \ 448 } \ 449 }) 450 451 /** 452 * struct hwmon_chip_info - Chip configuration 453 * @ops: Pointer to hwmon operations. 454 * @info: Null-terminated list of channel information. 455 */ 456 struct hwmon_chip_info { 457 const struct hwmon_ops *ops; 458 const struct hwmon_channel_info * const *info; 459 }; 460 461 /* hwmon_device_register() is deprecated */ 462 struct device *hwmon_device_register(struct device *dev); 463 464 /* 465 * hwmon_device_register_with_groups() and 466 * devm_hwmon_device_register_with_groups() are deprecated. 467 */ 468 struct device * 469 hwmon_device_register_with_groups(struct device *dev, const char *name, 470 void *drvdata, 471 const struct attribute_group **groups); 472 struct device * 473 devm_hwmon_device_register_with_groups(struct device *dev, const char *name, 474 void *drvdata, 475 const struct attribute_group **groups); 476 struct device * 477 hwmon_device_register_with_info(struct device *dev, 478 const char *name, void *drvdata, 479 const struct hwmon_chip_info *info, 480 const struct attribute_group **extra_groups); 481 struct device * 482 hwmon_device_register_for_thermal(struct device *dev, const char *name, 483 void *drvdata); 484 struct device * 485 devm_hwmon_device_register_with_info(struct device *dev, 486 const char *name, void *drvdata, 487 const struct hwmon_chip_info *info, 488 const struct attribute_group **extra_groups); 489 490 void hwmon_device_unregister(struct device *dev); 491 492 int hwmon_notify_event(struct device *dev, enum hwmon_sensor_types type, 493 u32 attr, int channel); 494 495 char *hwmon_sanitize_name(const char *name); 496 char *devm_hwmon_sanitize_name(struct device *dev, const char *name); 497 498 void hwmon_lock(struct device *dev); 499 void hwmon_unlock(struct device *dev); 500 501 DEFINE_GUARD(hwmon_lock, struct device *, hwmon_lock(_T), hwmon_unlock(_T)) 502 503 /** 504 * hwmon_is_bad_char - Is the char invalid in a hwmon name 505 * @ch: the char to be considered 506 * 507 * hwmon_is_bad_char() can be used to determine if the given character 508 * may not be used in a hwmon name. 509 * 510 * Returns true if the char is invalid, false otherwise. 511 */ 512 static inline bool hwmon_is_bad_char(const char ch) 513 { 514 switch (ch) { 515 case '-': 516 case '*': 517 case ' ': 518 case '\t': 519 case '\n': 520 return true; 521 default: 522 return false; 523 } 524 } 525 526 #endif 527