*/
int tarval_is_one(tarval *a);
+/**
+ * Returns 1 if tv is the "minus one"
+ *
+ * @param a the tarval
+ */
+int tarval_is_minus_one(tarval *a);
+
/*
* returns non-zero if all bits in the tarval are set
*/
*/
unsigned char get_tarval_sub_bits(tarval *tv, unsigned byte_ofs);
-/**
- * Return values of tarval classify
- */
-typedef enum _tarval_classification_t {
- TV_CLASSIFY_NULL = 0, /**< the tarval represents the additive neutral element */
- TV_CLASSIFY_ONE = +1, /**< the tarval represents the multiplicative neutral element */
- TV_CLASSIFY_ALL_ONE = -1, /**< the tarval represents the bitwise-and neutral element */
- TV_CLASSIFY_OTHER = 2 /**< all other tarvals */
-} tarval_classification_t;
-
/**
* Returns non-zero if a given (integer) tarval has only one single bit
* set.
*/
int tarval_enable_fp_ops(int enable);
+/**
+ * Check if its the a floating point NaN.
+ */
+int tarval_is_NaN(tarval *tv);
+
+/**
+ * Check if its the a floating point +inf.
+ */
+int tarval_is_plus_inf(tarval *tv);
+
+/**
+ * Check if its the a floating point -inf.
+ */
+int tarval_is_minus_inf(tarval *tv);
+
+/**
+ * Check if the tarval represents a finite value, ie neither NaN nor inf.
+ */
+int tarval_is_finite(tarval *tv);
+
#endif /* FIRM_TV_TV_H */