Added COUNTA(), FINV(), and TINV().

1999-04-28  Jukka-Pekka Iivonen  <iivonen@iki.fi>

	* src/fn-stat.c: Added COUNTA(), FINV(), and TINV().

	* src/fn-stat.c, src/fn-math.c: AVERAGE(), COUNT(), MAX(), and
	MIN() moved from fn-math.c to fn-stat.c.  They are in the
	statistical function group in Excel.

ChangeLog-1999-07-09

+1999-04-28  Jukka-Pekka Iivonen  <iivonen@iki.fi>
+
+	* src/fn-stat.c: Added COUNTA(), FINV(), and TINV().
+
+	* src/fn-stat.c, src/fn-math.c: AVERAGE(), COUNT(), MAX(), and
+	MIN() moved from fn-math.c to fn-stat.c.  They are in the
+	statistical function group in Excel.
+	
 1999-04-27  Jukka-Pekka Iivonen  <iivonen@iki.fi>
 
 	* src/fn-stat.c: Added BETADIST(), FDIST(), and TDIST().

ChangeLog-2000-02-23

+1999-04-28  Jukka-Pekka Iivonen  <iivonen@iki.fi>
+
+	* src/fn-stat.c: Added COUNTA(), FINV(), and TINV().
+
+	* src/fn-stat.c, src/fn-math.c: AVERAGE(), COUNT(), MAX(), and
+	MIN() moved from fn-math.c to fn-stat.c.  They are in the
+	statistical function group in Excel.
+	
 1999-04-27  Jukka-Pekka Iivonen  <iivonen@iki.fi>
 
 	* src/fn-stat.c: Added BETADIST(), FDIST(), and TDIST().

OChangeLog-1999-07-09

+1999-04-28  Jukka-Pekka Iivonen  <iivonen@iki.fi>
+
+	* src/fn-stat.c: Added COUNTA(), FINV(), and TINV().
+
+	* src/fn-stat.c, src/fn-math.c: AVERAGE(), COUNT(), MAX(), and
+	MIN() moved from fn-math.c to fn-stat.c.  They are in the
+	statistical function group in Excel.
+	
 1999-04-27  Jukka-Pekka Iivonen  <iivonen@iki.fi>
 
 	* src/fn-stat.c: Added BETADIST(), FDIST(), and TDIST().

OChangeLog-2000-02-23

+1999-04-28  Jukka-Pekka Iivonen  <iivonen@iki.fi>
+
+	* src/fn-stat.c: Added COUNTA(), FINV(), and TINV().
+
+	* src/fn-stat.c, src/fn-math.c: AVERAGE(), COUNT(), MAX(), and
+	MIN() moved from fn-math.c to fn-stat.c.  They are in the
+	statistical function group in Excel.
+	
 1999-04-27  Jukka-Pekka Iivonen  <iivonen@iki.fi>
 
 	* src/fn-stat.c: Added BETADIST(), FDIST(), and TDIST().

plugins/fn-math/functions.c

@@ -316,51 +316,6 @@ gnumeric_atan2 (struct FunctionDefinition *i, Value *argv [], char **error_strin
 				   value_get_as_double (argv [1])));
 }
 
-static char *help_average = {
-	N_("@FUNCTION=AVERAGE\n"
-	   "@SYNTAX=AVERAGE(value1, value2,...)\n"
-
-	   "@DESCRIPTION="
-	   "Computes the average of all the values and cells referenced in the "
-	   "argument list.  This is equivalent to the sum of the arguments divided "
-	   "by the count of the arguments."
-	   "\n"
-	   "@SEEALSO=SUM, COUNT")
-};
-
-Value *
-gnumeric_average (void *tsheet, GList *expr_node_list, int eval_col, int eval_row, char **error_string)
-{
-	Value *result;
-	Value *sum, *count;
-	double c;
-	
-	sum = gnumeric_sum (tsheet, expr_node_list, eval_col, eval_row, error_string);
-	if (!sum)
-		return NULL;
-	
-	count = gnumeric_count (tsheet, expr_node_list, eval_col, eval_row, error_string);
-	if (!count){
-		value_release (sum);
-		return NULL;
-	}
-
-	c = value_get_as_double (count);
-	
-	if (c == 0.0){
-		*error_string = "Division by zero";
-		value_release (sum);
-		return NULL;
-	}
-	
-	result = value_float (value_get_as_double (sum) / c);
-
-	value_release (count);
-	value_release (sum);
-	
-	return result;
-}
-
 static char *help_ceil = {
 	N_("@FUNCTION=CEIL\n"
 	   "@SYNTAX=CEIL(x)\n"
@@ -477,54 +432,6 @@ gnumeric_cosh (struct FunctionDefinition *i, Value *argv [], char **error_string
 	return value_float (cosh (value_get_as_double (argv [0])));
 }
 
-static int
-callback_function_count (Sheet *sheet, Value *value, char **error_string, void *closure)
-{
-	Value *result = (Value *) closure;
-
-	switch (value->type){
-	case VALUE_INTEGER:
-		result->v.v_int++;
-		break;
-		
-	case VALUE_FLOAT:
-		result->v.v_int++;
-		break;
-		
-	default:
-		break;
-	}		
-	return TRUE;
-}
-
-static char *help_count = {
-	N_("@FUNCTION=COUNT\n"
-	   "@SYNTAX=COUNT(b1, b2, ...)\n"
-
-	   "@DESCRIPTION="
-	   "Returns the total number of arguments passed."
-	   "\n"
-	   "Performing this function on a string or empty cell simply does nothing."
-	   "\n"
-	   "@SEEALSO=AVERAGE")
-};
-
-Value *
-gnumeric_count (void *tsheet, GList *expr_node_list, int eval_col, int eval_row, char **error_string)
-{
-	Value *result;
-	Sheet *sheet = (Sheet *) tsheet;
-
-	result = g_new (Value, 1);
-	result->type = VALUE_INTEGER;
-	result->v.v_int = 0;
-	
-	function_iterate_argument_values (sheet, callback_function_count, result, expr_node_list,
-					  eval_col, eval_row, error_string);
-
-	return result;
-}
-
 static char *help_degrees = {
 	N_("@FUNCTION=DEGREES\n"
 	   "@SYNTAX=DEGREES(x)\n"
@@ -802,125 +709,6 @@ gnumeric_log10 (struct FunctionDefinition *i, Value *argv [], char **error_strin
 	return value_float (log10 (t));
 }
 
-static char *help_min = {
-	N_("@FUNCTION=MIN\n"
-	   "@SYNTAX=MIN(b1, b2, ...)\n"
-
-	   "@DESCRIPTION="
-	   "MIN returns the value of the element of the values passed "
-	   "that has the smallest value. With negative numbers considered "
-	   "smaller than positive numbers."
-	   "\n"
-	   "Performing this function on a string or empty cell simply does nothing."
-	   "\n"
-	   "@SEEALSO=MAX,ABS")
-};
-
-static char *help_max = {
-	N_("@FUNCTION=MAX\n"
-	   "@SYNTAX=MAX(b1, b2, ...)\n"
-
-	   "@DESCRIPTION="
-	   "MAX returns the value of the element of the values passed "
-	   "that has the largest value. With negative numbers considered "
-	   "smaller than positive numbers."
-	   "\n"
-	   "Performing this function on a string or empty cell simply does nothing."
-	   "\n"
-	   "@SEEALSO=MIN,ABS")
-};
-
-enum {
-	OPER_MIN,
-	OPER_MAX
-};
-
-typedef struct {
-	int   operation;
-	int   found;
-	Value *result;
-} min_max_closure_t;
-
-static int
-callback_function_min_max (Sheet *sheet, Value *value, char **error_string, void *closure)
-{
-	min_max_closure_t *mm = closure;
-	
-	switch (value->type){
-	case VALUE_INTEGER:
-		if (mm->found){
-			if (mm->operation == OPER_MIN){
-				if (value->v.v_int < mm->result->v.v_float)
-					mm->result->v.v_float = value->v.v_int;
-			} else {
-				if (value->v.v_int > mm->result->v.v_float)
-					mm->result->v.v_float = value->v.v_int;
-			}
-		} else {
-			mm->found = 1;
-			mm->result->v.v_float = value->v.v_int;
-		}
-		break;
-
-	case VALUE_FLOAT:
-		if (mm->found){
-			if (mm->operation == OPER_MIN){
-				if (value->v.v_float < mm->result->v.v_float)
-					mm->result->v.v_float = value->v.v_float;
-			} else {
-				if (value->v.v_float > mm->result->v.v_float)
-					mm->result->v.v_float = value->v.v_float;
-			}
-		} else {
-			mm->found = 1;
-			mm->result->v.v_float = value->v.v_float;
-		}
-
-	default:
-		/* ignore strings */
-		break;
-	}
-	
-	return TRUE;
-}
-
-static Value *
-gnumeric_min (void *tsheet, GList *expr_node_list, int eval_col, int eval_row, char **error_string)
-{
-	min_max_closure_t closure;
-	Sheet *sheet = (Sheet *) tsheet;
-
-	closure.operation = OPER_MIN;
-	closure.found  = 0;
-	closure.result = g_new (Value, 1);
-	closure.result->type = VALUE_FLOAT;
-	closure.result->v.v_float = 0;
-
-	function_iterate_argument_values (sheet, callback_function_min_max,
-					  &closure, expr_node_list,
-					  eval_col, eval_row, error_string);
-
-	return 	closure.result;
-}
-
-static Value *
-gnumeric_max (void *tsheet, GList *expr_node_list, int eval_col, int eval_row, char **error_string)
-{
-	min_max_closure_t closure;
-	Sheet *sheet = (Sheet *) tsheet;
-
-	closure.operation = OPER_MAX;
-	closure.found  = 0;
-	closure.result = g_new (Value, 1);
-	closure.result->type = VALUE_FLOAT;
-	closure.result->v.v_float = 0;
-
-	function_iterate_argument_values (sheet, callback_function_min_max,
-					  &closure, expr_node_list,
-					  eval_col, eval_row, error_string);
-	return 	closure.result;
-}
-
 static char *help_mod = {
 	N_("@FUNCTION=MOD\n"
 	   "@SYNTAX=MOD(number,divisor)\n"
@@ -1733,10 +1521,8 @@ FunctionDefinition math_functions [] = {
 	{ "atanh",   "f",    "number",    &help_atanh, NULL, gnumeric_atanh },
 	{ "atan2",   "ff",   "xnum,ynum", &help_atan2, NULL, gnumeric_atan2 },
 	/* avedev */
-	{ "average", 0,      "",          &help_average, gnumeric_average, NULL },
 	{ "cos",     "f",    "number",    &help_cos,     NULL, gnumeric_cos },
 	{ "cosh",    "f",    "number",    &help_cosh,    NULL, gnumeric_cosh },
-	{ "count",   0,      "",          &help_count,   gnumeric_count, NULL },
 	{ "ceil",    "f",    "number",    &help_ceil,    NULL, gnumeric_ceil },
 	{ "ceiling", "ff",   "number,significance",    &help_ceiling, NULL, gnumeric_ceiling },
 	{ "degrees", "f",    "number",    &help_degrees, NULL, gnumeric_degrees },
@@ -1750,8 +1536,6 @@ FunctionDefinition math_functions [] = {
 	{ "log",     "f",    "number",    &help_log,     NULL, gnumeric_log },
 	{ "log2",    "f",    "number",    &help_log2,    NULL, gnumeric_log2 },
 	{ "log10",   "f",    "number",    &help_log10,   NULL, gnumeric_log10 },
-	{ "max",     0,      "",          &help_max,     gnumeric_max, NULL },
-	{ "min",     0,      "",          &help_min,     gnumeric_min, NULL },
 	{ "mod",     "ff",   "num,denom", &help_mod,     NULL, gnumeric_mod },
 	{ "multinomial", 0,  "",          &help_multinomial, gnumeric_multinomial, NULL },
 	{ "not",     "f",    "number",    &help_not,     NULL, gnumeric_not },

plugins/fn-stat/functions.c

@@ -1696,6 +1696,282 @@ gnumeric_geomean (void *tsheet, GList *expr_node_list,
 	return value_float (pow (pr.product, 1.0/num));
 }
 
+static char *help_count = {
+	N_("@FUNCTION=COUNT\n"
+	   "@SYNTAX=COUNT(b1, b2, ...)\n"
+
+	   "@DESCRIPTION="
+	   "Returns the total number of integer or floating point "
+	   "arguments passed."
+	   "\n"
+	   "Performing this function on a string or empty cell simply does "
+	   "nothing."
+	   "\n"
+	   "@SEEALSO=AVERAGE")
+};
+
+static int
+callback_function_count (Sheet *sheet, Value *value,
+			 char **error_string, void *closure)
+{
+	Value *result = (Value *) closure;
+
+	switch (value->type){
+	case VALUE_INTEGER:
+		result->v.v_int++;
+		break;
+		
+	case VALUE_FLOAT:
+		result->v.v_int++;
+		break;
+		
+	default:
+		break;
+	}		
+	return TRUE;
+}
+
+Value *
+gnumeric_count (void *tsheet, GList *expr_node_list,
+		int eval_col, int eval_row, char **error_string)
+{
+	Value *result;
+	Sheet *sheet = (Sheet *) tsheet;
+
+	result = g_new (Value, 1);
+	result->type = VALUE_INTEGER;
+	result->v.v_int = 0;
+	
+	function_iterate_argument_values (sheet, callback_function_count,
+					  result, expr_node_list,
+					  eval_col, eval_row, error_string);
+
+	return result;
+}
+
+static char *help_counta = {
+        N_("@FUNCTION=COUNTA\n"
+           "@SYNTAX=COUNTA(b1, b2, ...)\n"
+
+           "@DESCRIPTION="
+           "Returns the number of arguments passed not including empty cells."
+           "\n"
+           "@SEEALSO=AVERAGE,COUNT,DCOUNT,DCOUNTA,PRODUCT,SUM")
+};
+
+static int
+callback_function_counta (Sheet *sheet, Value *value,
+			  char **error_string, void *
+closure)
+{
+        Value *result = (Value *) closure;
+
+        switch (value->type){
+        case VALUE_INTEGER:
+        case VALUE_FLOAT:
+	case VALUE_STRING:
+	case VALUE_CELLRANGE:
+	case VALUE_ARRAY:
+                result->v.v_int++;
+                break;
+        default:
+                break;
+        }
+        return TRUE;
+}
+
+Value *
+gnumeric_counta (void *tsheet, GList *expr_node_list,
+		 int eval_col, int eval_row, char **error_string)
+{
+        Value *result;
+        Sheet *sheet = (Sheet *) tsheet;
+
+        result = g_new (Value, 1);
+        result->type = VALUE_INTEGER;
+        result->v.v_int = 0;
+
+        function_iterate_argument_values (sheet, callback_function_counta,
+					  result, expr_node_list,
+                                          eval_col, eval_row, error_string);
+
+        return result;
+}
+
+static char *help_average = {
+	N_("@FUNCTION=AVERAGE\n"
+	   "@SYNTAX=AVERAGE(value1, value2,...)\n"
+
+	   "@DESCRIPTION="
+	   "Computes the average of all the values and cells referenced in "
+	   "the argument list.  This is equivalent to the sum of the "
+	   "arguments divided by the count of the arguments."
+	   "\n"
+	   "@SEEALSO=SUM, COUNT")
+};
+
+Value *
+gnumeric_average (void *tsheet, GList *expr_node_list,
+		  int eval_col, int eval_row, char **error_string)
+{
+	Value *result;
+	Value *sum, *count;
+	double c;
+	
+	sum = gnumeric_sum (tsheet, expr_node_list,
+			    eval_col, eval_row, error_string);
+	if (!sum)
+		return NULL;
+	
+	count = gnumeric_count (tsheet, expr_node_list,
+				eval_col, eval_row, error_string);
+	if (!count){
+		value_release (sum);
+		return NULL;
+	}
+
+	c = value_get_as_double (count);
+	
+	if (c == 0.0){
+		*error_string = "Division by zero";
+		value_release (sum);
+		return NULL;
+	}
+	
+	result = value_float (value_get_as_double (sum) / c);
+
+	value_release (count);
+	value_release (sum);
+	
+	return result;
+}
+
+static char *help_min = {
+	N_("@FUNCTION=MIN\n"
+	   "@SYNTAX=MIN(b1, b2, ...)\n"
+
+	   "@DESCRIPTION="
+	   "MIN returns the value of the element of the values passed "
+	   "that has the smallest value. With negative numbers considered "
+	   "smaller than positive numbers."
+	   "\n"
+	   "Performing this function on a string or empty cell simply does "
+	   "nothing."
+	   "\n"
+	   "@SEEALSO=MAX,ABS")
+};
+
+static char *help_max = {
+	N_("@FUNCTION=MAX\n"
+	   "@SYNTAX=MAX(b1, b2, ...)\n"
+
+	   "@DESCRIPTION="
+	   "MAX returns the value of the element of the values passed "
+	   "that has the largest value. With negative numbers considered "
+	   "smaller than positive numbers."
+	   "\n"
+	   "Performing this function on a string or empty cell simply does "
+	   "nothing."
+	   "\n"
+	   "@SEEALSO=MIN,ABS")
+};
+
+enum {
+	OPER_MIN,
+	OPER_MAX
+};
+
+typedef struct {
+	int   operation;
+	int   found;
+	Value *result;
+} min_max_closure_t;
+
+static int
+callback_function_min_max (Sheet *sheet, Value *value,
+			   char **error_string, void *closure)
+{
+	min_max_closure_t *mm = closure;
+	
+	switch (value->type){
+	case VALUE_INTEGER:
+		if (mm->found){
+			if (mm->operation == OPER_MIN){
+				if (value->v.v_int < mm->result->v.v_float)
+					mm->result->v.v_float = value->v.v_int;
+			} else {
+				if (value->v.v_int > mm->result->v.v_float)
+					mm->result->v.v_float = value->v.v_int;
+			}
+		} else {
+			mm->found = 1;
+			mm->result->v.v_float = value->v.v_int;
+		}
+		break;
+
+	case VALUE_FLOAT:
+		if (mm->found){
+			if (mm->operation == OPER_MIN){
+				if (value->v.v_float < mm->result->v.v_float)
+					mm->result->v.v_float =
+					  value->v.v_float;
+			} else {
+				if (value->v.v_float > mm->result->v.v_float)
+					mm->result->v.v_float =
+					  value->v.v_float;
+			}
+		} else {
+			mm->found = 1;
+			mm->result->v.v_float = value->v.v_float;
+		}
+
+	default:
+		/* ignore strings */
+		break;
+	}
+	
+	return TRUE;
+}
+
+static Value *
+gnumeric_min (void *tsheet, GList *expr_node_list,
+	      int eval_col, int eval_row, char **error_string)
+{
+	min_max_closure_t closure;
+	Sheet *sheet = (Sheet *) tsheet;
+
+	closure.operation = OPER_MIN;
+	closure.found  = 0;
+	closure.result = g_new (Value, 1);
+	closure.result->type = VALUE_FLOAT;
+	closure.result->v.v_float = 0;
+
+	function_iterate_argument_values (sheet, callback_function_min_max,
+					  &closure, expr_node_list,
+					  eval_col, eval_row, error_string);
+
+	return 	closure.result;
+}
+
+static Value *
+gnumeric_max (void *tsheet, GList *expr_node_list,
+	      int eval_col, int eval_row, char **error_string)
+{
+	min_max_closure_t closure;
+	Sheet *sheet = (Sheet *) tsheet;
+
+	closure.operation = OPER_MAX;
+	closure.found  = 0;
+	closure.result = g_new (Value, 1);
+	closure.result->type = VALUE_FLOAT;
+	closure.result->v.v_float = 0;
+
+	function_iterate_argument_values (sheet, callback_function_min_max,
+					  &closure, expr_node_list,
+					  eval_col, eval_row, error_string);
+	return 	closure.result;
+}
+
 static char *help_skew = {
 	N_("@FUNCTION=SKEW\n"
 	   "@SYNTAX=SKEW(n1, n2, ...)\n"
@@ -2102,6 +2378,61 @@ gnumeric_tdist (struct FunctionDefinition *i, Value *argv [],
 	        return value_float (pt(x, dof)*2);
 }
 
+static char *help_tinv = {
+       N_("@FUNCTION=TINV\n"
+          "@SYNTAX=TINV(p,dof)\n"
+
+          "@DESCRIPTION="
+          "The TINV function returns the inverse of the two-tailed Student's "
+	  "t-distribution. TINV uses an iterative algorithm for calculating "
+	  "the result. If TINV does not converge (accuracy within +/- 3x10^7) "
+	  "after 100 iterations, the function returns #N/A! error. "
+          "\n"
+	  "If @p < 0 or @p > 1 or @dof < 1 TINV returns #NUM! error. "
+	  "\n"
+          "@SEEALSO=TDIST,TTEST")
+};
+
+static Value *
+gnumeric_tinv (struct FunctionDefinition *i, Value *argv [],
+		 char **error_string)
+{
+        const int left = 1;
+	const int right = 2;
+        const int iterations = 200;
+	const float_t accuracy_limit = 0.00000003;
+        float_t p, p_test, x, step;
+	int     dof, n, dir = 0;
+
+        p = value_get_as_double (argv [0]);
+