version 1.21, 2002/06/26 17:26:09
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version 1.25, 2005/12/01 20:05:22
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Line 2454 check_input_usymb(u_symb)char *u_symb;
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Line 2454 check_input_usymb(u_symb)char *u_symb;
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/* num_p : the numerical part in string */ |
/* num_p : the numerical part in string */ |
/* unit_p : the unit string */ |
/* unit_p : the unit string */ |
/* num_p is used to calculate sig figs */ |
/* num_p is used to calculate sig figs */ |
/* return : 0 empty string */ |
/* return : -1 invalid string */ |
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/* 0 empty string */ |
/* 1 number without units */ |
/* 1 number without units */ |
/* 2 empty number with units */ |
/* 2 empty number with units */ |
/* 3 number with units */ |
/* 3 number with units */ |
Line 2499 char *buf;double *num; char *num_p; char
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Line 2500 char *buf;double *num; char *num_p; char
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while( isspace(buf[idx]) ) { idx++; } |
while( isspace(buf[idx]) ) { idx++; } |
sscanf(num_str, "%lg", &result); /* put the numerical value into a double variable */ |
sscanf(num_str, "%lg", &result); /* put the numerical value into a double variable */ |
errcode = errcode | 1; |
errcode = errcode | 1; |
} else if( buf[idx] == 'x' || buf[idx] == 'X') { /* optional x or X part */ |
} else if( buf[idx] == 'x' || buf[idx] == 'X' || buf[idx] == '*') { /* optional x or X part */ |
idx++; /* skip x or X */ |
idx++; /* skip x or X */ |
while( isspace(buf[idx]) ) { idx++; } |
while( isspace(buf[idx]) ) { idx++; } |
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e_part = 1.0; /* default power */ |
e_part = 1.0; /* default power */ |
base_str[b_idx] = 0; /* initialize base_str[] */ |
base_str[b_idx] = 0; /* initialize base_str[] */ |
while( isdigit(buf[idx]) || buf[idx] == '.' ) { /* should start with a digit or . */ |
if( buf[idx] == '1' && buf[idx+1] == '0') { |
base_str[b_idx++] = buf[idx++]; |
base_str[b_idx++] = buf[idx++]; |
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base_str[b_idx++] = buf[idx++]; |
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} else { |
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return (-1); |
} |
} |
base_str[b_idx] = 0; /* terminate base_str[] */ |
base_str[b_idx] = 0; /* terminate base_str[] */ |
while( isspace(buf[idx]) ) { idx++; } /* skip over white spaces */ |
while( isspace(buf[idx]) ) { idx++; } /* skip over white spaces */ |
Line 2520 char *buf;double *num; char *num_p; char
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Line 2524 char *buf;double *num; char *num_p; char
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while( isspace(buf[idx]) ) { idx++; } |
while( isspace(buf[idx]) ) { idx++; } |
if( isdigit(buf[idx]) || buf[idx] == '+' || buf[idx] == '-' ) { |
if( isdigit(buf[idx]) || buf[idx] == '+' || buf[idx] == '-' ) { |
exp_str[e_idx] = 0; /* initialize exp_str[], again */ |
exp_str[e_idx] = 0; /* initialize exp_str[], again */ |
while( isdigit(buf[idx]) || buf[idx] == '.' || buf[idx] == '+' || buf[idx] == '-' ) { |
while( isdigit(buf[idx]) /*|| buf[idx] == '.'*/ || buf[idx] == '+' || buf[idx] == '-' ) { |
exp_str[e_idx++] = buf[idx++]; |
exp_str[e_idx++] = buf[idx++]; |
} |
} |
exp_str[e_idx] = 0; /* terminate exp_str[] */ |
exp_str[e_idx] = 0; /* terminate exp_str[] */ |
Line 2554 char *buf;double *num; char *num_p; char
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Line 2558 char *buf;double *num; char *num_p; char
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while( isspace(buf[idx]) ) { idx++; } |
while( isspace(buf[idx]) ) { idx++; } |
if( isdigit(buf[idx]) || buf[idx] == '+' || buf[idx] == '-' ) { |
if( isdigit(buf[idx]) || buf[idx] == '+' || buf[idx] == '-' ) { |
exp_str[e_idx] = 0; |
exp_str[e_idx] = 0; |
while( isdigit(buf[idx]) || buf[idx] == '.' || buf[idx] == '+' || buf[idx] == '-' ) { |
while( isdigit(buf[idx]) /*|| buf[idx] == '.'*/ || buf[idx] == '+' || buf[idx] == '-' ) { |
exp_str[e_idx++] = buf[idx++]; |
exp_str[e_idx++] = buf[idx++]; |
} |
} |
exp_str[e_idx] = 0; |
exp_str[e_idx] = 0; |
Line 2565 char *buf;double *num; char *num_p; char
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Line 2569 char *buf;double *num; char *num_p; char
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} |
} |
sscanf(exp_str, "%lg", &e_part); |
sscanf(exp_str, "%lg", &e_part); |
sscanf(num_str, "%lg", &n_part); |
sscanf(num_str, "%lg", &n_part); |
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if( n_part != 10 ) { |
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return (-1); |
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} |
result = pow(n_part,e_part); |
result = pow(n_part,e_part); |
errcode = errcode | 1; |
errcode = errcode | 1; |
} else { /* number unit */ |
} else { /* number unit */ |
Line 2638 answers_string(mode, p)int mode;Problem_
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Line 2645 answers_string(mode, p)int mode;Problem_
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if(len_dd == 0 ) { /* no unit_str */ |
if(len_dd == 0 ) { /* no unit_str */ |
sprintf(ans_str," %s [%s,%s]\n\n", str_aa,str_bb,str_cc); |
sprintf(ans_str," %s [%s,%s]\n\n", str_aa,str_bb,str_cc); |
} else { |
} else { |
sprintf(ans_str," %s [%s,%s] $%s$\n\n", str_aa,str_bb,str_cc,p->unit_str); |
sprintf(ans_str," %s [%s,%s] $\\mathrm{%s}$\n\n", str_aa,str_bb,str_cc,p->unit_str); |
} |
} |
capa_mfree((char *)str_aa); |
capa_mfree((char *)str_aa); |
capa_mfree((char *)str_bb); |
capa_mfree((char *)str_bb); |
Line 2660 answers_string(mode, p)int mode;Problem_
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Line 2667 answers_string(mode, p)int mode;Problem_
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if(len_dd == 0 ) { /* no unit_str */ |
if(len_dd == 0 ) { /* no unit_str */ |
sprintf(ans_str," %s\n", str_bb); |
sprintf(ans_str," %s\n", str_bb); |
} else { |
} else { |
sprintf(ans_str," %s $%s$\n", str_bb,p->unit_str); |
sprintf(ans_str," %s $\\mathrm{%s}$\n", str_bb,p->unit_str); |
} |
} |
capa_mfree((char *)str_bb); |
capa_mfree((char *)str_bb); |
} |
} |
Line 2897 answers_string(mode, p)int mode;Problem_
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Line 2904 answers_string(mode, p)int mode;Problem_
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} |
} |
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int check_for_unit_fail(int result) |
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{ |
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int ret; |
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ret = (result == UNIT_FAIL || |
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result == UNIT_IRRECONCIBLE || |
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result == UNIT_INVALID_STUDENT3 || |
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result == UNIT_INVALID_STUDENT2 || |
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result == UNIT_INVALID_STUDENT1); |
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return ret; |
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} |
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/* ------------------------------ called from capalogin */ |
/* ------------------------------ called from capalogin */ |
/* impose stronger checking on the user input string *answer */ |
/* impose stronger checking on the user input string *answer */ |
Line 2943 capa_check_ans(ai,ans, error) AnswerInfo
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Line 2960 capa_check_ans(ai,ans, error) AnswerInfo
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all_alphabet = 0; |
all_alphabet = 0; |
} |
} |
} |
} |
if( !all_alphabet ) { /* answer string is not all alphabets */ |
if( !all_alphabet ) { |
outcome = split_num_unit(ans,&n_part,num_str,unit_str); |
outcome = split_num_unit(ans,&n_part,num_str,unit_str); |
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} |
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if( outcome > 0 ) { |
if( outcome > 1 ) { /* with both num and unit parts or only unit part */ |
if( outcome > 1 ) { /* with both num and unit parts or only unit part */ |
if( u_p != NULL ) { |
if( u_p != NULL ) { |
if (UNIT_FAIL == (result = check_correct_unit(unit_str,u_p,&scale))) { |
result = check_correct_unit(unit_str,u_p,&scale); |
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if (check_for_unit_fail(result)) { |
*error=strsave(unit_str); |
*error=strsave(unit_str); |
} |
} |
} else { /* what to do when no unit is specified but student entered a unit? */ |
} else { /* what to do when no unit is specified but student entered a unit? */ |
Line 2959 capa_check_ans(ai,ans, error) AnswerInfo
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Line 2979 capa_check_ans(ai,ans, error) AnswerInfo
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result = NO_UNIT; |
result = NO_UNIT; |
} |
} |
} |
} |
if( (result != NO_UNIT) && (result != UNIT_FAIL) && ( result != UNIT_NOTNEEDED) ) { |
if( (result != NO_UNIT) && (!check_for_unit_fail(result)) && ( result != UNIT_NOTNEEDED) ) { |
if( t == ANSWER_IS_FLOAT ) { |
if( t == ANSWER_IS_FLOAT ) { |
target = (double)atof(s); /* real number */ |
target = (double)atof(s); /* real number */ |
} else { |
} else { |
Line 3097 capa_check_answer(p, answer, error) Prob
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Line 3117 capa_check_answer(p, answer, error) Prob
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fmt = p->ans_fmt; |
fmt = p->ans_fmt; |
calc_type = p->calc; |
calc_type = p->calc; |
unit_str[0]=0; |
unit_str[0]=0; |
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switch(type) { |
switch(type) { |
case ANSWER_IS_INTEGER: |
case ANSWER_IS_INTEGER: |
case ANSWER_IS_FLOAT: |
case ANSWER_IS_FLOAT: |
Line 3111 capa_check_answer(p, answer, error) Prob
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Line 3131 capa_check_answer(p, answer, error) Prob
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} |
} |
if( !all_alphabet ) { |
if( !all_alphabet ) { |
outcome = split_num_unit(answer,&n_part,input,unit_str); |
outcome = split_num_unit(answer,&n_part,input,unit_str); |
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} |
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if( outcome > 0 ) { |
if( outcome > 1 ) { /* with both num and unit parts or only unit part */ |
if( outcome > 1 ) { /* with both num and unit parts or only unit part */ |
if( p->ans_unit != NULL ) { |
if( p->ans_unit != NULL ) { |
if ( UNIT_FAIL == ( result = check_correct_unit(unit_str,p->ans_unit,&scale) ) ) { |
result = check_correct_unit(unit_str,p->ans_unit,&scale); |
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if (check_for_unit_fail(result)) { |
*error=strsave(unit_str); |
*error=strsave(unit_str); |
} |
} |
} else { /* what to do when no unit is specified but student entered a unit? */ |
} else { /* what to do when no unit is specified but student entered a unit? */ |
Line 3125 capa_check_answer(p, answer, error) Prob
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Line 3148 capa_check_answer(p, answer, error) Prob
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result = NO_UNIT; |
result = NO_UNIT; |
} |
} |
} |
} |
if( (result != NO_UNIT) && (result != UNIT_FAIL) && ( result != UNIT_NOTNEEDED) ) { |
if( (result != NO_UNIT) && (!check_for_unit_fail(result)) && ( result != UNIT_NOTNEEDED) ) { |
if( type == ANSWER_IS_FLOAT ) { |
if( type == ANSWER_IS_FLOAT ) { |
target = (double)atof(correct); /* real number */ |
target = (double)atof(correct); /* real number */ |
} else { |
} else { |
Line 3400 Problem_t *p; char **answers; int cnt; c
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Line 3423 Problem_t *p; char **answers; int cnt; c
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done = ii = 0; |
done = ii = 0; |
result = 0; |
result = 0; |
while( !done ) { /* check if any of the outcome has failed on units */ |
while( !done ) { /* check if any of the outcome has failed on units */ |
if( (outcomes[ii] == UNIT_FAIL) || |
if( (check_for_unit_fail(outcomes[ii])) || |
(outcomes[ii] == NO_UNIT) || |
(outcomes[ii] == NO_UNIT) || |
(outcomes[ii] == UNIT_NOTNEEDED) ) { |
(outcomes[ii] == UNIT_NOTNEEDED) ) { |
result = outcomes[ii]; |
result = outcomes[ii]; |
Line 3447 Problem_t *p; char **answers; int cnt; c
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Line 3470 Problem_t *p; char **answers; int cnt; c
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} |
} |
} |
} |
for (ii=0;ii<cnt;ii++) { |
for (ii=0;ii<cnt;ii++) { |
if( (outcomes[ii] == UNIT_FAIL) || |
if( (check_for_unit_fail(outcomes[ii])) || |
(outcomes[ii] == SIG_FAIL) || |
(outcomes[ii] == SIG_FAIL) || |
(outcomes[ii] == UNIT_NOTNEEDED) ) { |
(outcomes[ii] == UNIT_NOTNEEDED) ) { |
capa_mfree(errormsg[ii]); |
capa_mfree(errormsg[ii]); |
Line 3465 Problem_t *p; char **answers; int cnt; c
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Line 3488 Problem_t *p; char **answers; int cnt; c
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result = capa_check_answer(p, answers[0], error); |
result = capa_check_answer(p, answers[0], error); |
ii = 1; ai = p->ans_list; |
ii = 1; ai = p->ans_list; |
while( (ii<p->ans_cnt) && ( (result != EXACT_ANS) && (result != APPROX_ANS) ) ) { |
while( (ii<p->ans_cnt) && ( (result != EXACT_ANS) && (result != APPROX_ANS) ) ) { |
if((ii!=1)&&((result==UNIT_FAIL)||(result==SIG_FAIL)||(result==UNIT_NOTNEEDED))) { |
if((ii!=1)&&((check_for_unit_fail(result))||(result==SIG_FAIL)||(result==UNIT_NOTNEEDED))) { |
capa_mfree((char*)error); |
capa_mfree((char*)error); |
} |
} |
result = capa_check_ans(ai,answers[0],error); |
result = capa_check_ans(ai,answers[0],error); |