* @brief tarval floating point calculations
* @date 2003
* @author Mathias Heil
- * @version $Id$
*/
#ifndef FIRM_TV_FLTCALC_H
#define FIRM_TV_FLTCALC_H
#include <stdlib.h>
#include "firm_types.h"
+#include "irtypes.h"
enum {
FC_DEC,
* possible float states
*/
typedef enum {
- NORMAL, /**< normal representation, implicit 1 */
- ZERO, /**< +/-0 */
- SUBNORMAL, /**< denormals, implicit 0 */
- INF, /**< +/-oo */
- NAN, /**< Not A Number */
+ FC_NORMAL, /**< normal representation, implicit 1 */
+ FC_ZERO, /**< +/-0 */
+ FC_SUBNORMAL, /**< denormals, implicit 0 */
+ FC_INF, /**< +/-oo */
+ FC_NAN, /**< Not A Number */
} value_class_t;
-/**
- * A descriptor for an IEEE float value.
- */
-typedef struct ieee_descriptor_t {
- unsigned char exponent_size; /**< size of exponent in bits */
- unsigned char mantissa_size; /**< size of mantissa in bits */
- unsigned char explicit_one; /**< set if the leading one is explicit */
- unsigned char clss; /**< state of this float */
-} ieee_descriptor_t;
-
struct fp_value;
typedef struct fp_value fp_value;
int fc_get_buffer_length(void);
/*}@*/
-void *fc_val_from_str(const char *str, size_t len, const ieee_descriptor_t *desc, void *result);
+void *fc_val_from_str(const char *str, size_t len, const float_descriptor_t *desc, void *result);
/** get the representation of a floating point value
* This function tries to builds a representation having the same value as the
* @return The result pointer passed to the function. If this was NULL this returns
* a pointer to the internal accumulator buffer
*/
-fp_value *fc_val_from_ieee754(long double l, const ieee_descriptor_t *desc,
+fp_value *fc_val_from_ieee754(long double l, const float_descriptor_t *desc,
fp_value *result);
/** retrieve the float value of an internal value
* @return The result pointer passed to the function. If this was NULL this returns
* a pointer to the internal accumulator buffer
*/
-fp_value *fc_cast(const fp_value *val, const ieee_descriptor_t *desc, fp_value *result);
+fp_value *fc_cast(const fp_value *val, const float_descriptor_t *desc, fp_value *result);
/*@{*/
/** build a special float value
* @return The result pointer passed to the function. If this was NULL this returns
* a pointer to the internal accumulator buffer
*/
-fp_value *fc_get_min(const ieee_descriptor_t *desc, fp_value *result);
-fp_value *fc_get_max(const ieee_descriptor_t *desc, fp_value *result);
-fp_value *fc_get_snan(const ieee_descriptor_t *desc, fp_value *result);
-fp_value *fc_get_qnan(const ieee_descriptor_t *desc, fp_value *result);
-fp_value *fc_get_plusinf(const ieee_descriptor_t *desc, fp_value *result);
-fp_value *fc_get_minusinf(const ieee_descriptor_t *desc, fp_value *result);
+fp_value *fc_get_min(const float_descriptor_t *desc, fp_value *result);
+fp_value *fc_get_max(const float_descriptor_t *desc, fp_value *result);
+fp_value *fc_get_snan(const float_descriptor_t *desc, fp_value *result);
+fp_value *fc_get_qnan(const float_descriptor_t *desc, fp_value *result);
+fp_value *fc_get_plusinf(const float_descriptor_t *desc, fp_value *result);
+fp_value *fc_get_minusinf(const float_descriptor_t *desc, fp_value *result);
/*@}*/
int fc_is_zero(const fp_value *a);
/**
* Return non-zero if a given value can be converted lossless into another precision.
*/
-int fc_can_lossless_conv_to(const fp_value *value, const ieee_descriptor_t *desc);
+int fc_can_lossless_conv_to(const fp_value *value, const float_descriptor_t *desc);
/** Set new rounding mode
* This function sets the rounding mode to one of the following, returning
*/
unsigned char fc_sub_bits(const fp_value *val, unsigned num_bit, unsigned byte_ofs);
-/**
- * Set the immediate precision for IEEE-754 results. Set this to
- * 0 to get the same precision as the operands.
- * For x87 compatibility, set this to 80.
- *
- * @return the old setting
- */
-unsigned fc_set_immediate_precision(unsigned bits);
-
/**
* Returns non-zero if the result of the last operation was exact.
*/