-
-/*============================================================================
-
-This C header file is part of the SoftFloat IEC/IEEE Floating-point Arithmetic
-Package, Release 2b.
-
-Written by John R. Hauser. This work was made possible in part by the
-International Computer Science Institute, located at Suite 600, 1947 Center
-Street, Berkeley, California 94704. Funding was partially provided by the
-National Science Foundation under grant MIP-9311980. The original version
-of this code was written as part of a project to build a fixed-point vector
-processor in collaboration with the University of California at Berkeley,
-overseen by Profs. Nelson Morgan and John Wawrzynek. More information
-is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
-arithmetic/SoftFloat.html'.
-
-THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort has
-been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
-RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
-AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
-COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
-EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
-INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR
-OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
-
-Derivative works are acceptable, even for commercial purposes, so long as
-(1) the source code for the derivative work includes prominent notice that
-the work is derivative, and (2) the source code includes prominent notice with
-these four paragraphs for those parts of this code that are retained.
-
-=============================================================================*/
-
-/*----------------------------------------------------------------------------
-| The macro `FLOATX80' must be defined to enable the extended double-precision
-| floating-point format `floatx80'. If this macro is not defined, the
-| `floatx80' type will not be defined, and none of the functions that either
-| input or output the `floatx80' type will be defined. The same applies to
-| the `FLOAT128' macro and the quadruple-precision format `float128'.
-*----------------------------------------------------------------------------*/
-#define FLOATX80
-#define FLOAT128
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE floating-point types.
-*----------------------------------------------------------------------------*/
-typedef unsigned int float32;
-typedef unsigned long long float64;
-#ifdef FLOATX80
-typedef struct {
- unsigned short high;
- unsigned long long low;
-} floatx80;
-#endif
-#ifdef FLOAT128
-typedef struct {
- unsigned long long high, low;
-} float128;
-#endif
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE floating-point underflow tininess-detection mode.
-*----------------------------------------------------------------------------*/
-extern int float_detect_tininess;
-enum {
- float_tininess_after_rounding = 0,
- float_tininess_before_rounding = 1
-};
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE floating-point rounding mode.
-*----------------------------------------------------------------------------*/
-extern int float_rounding_mode;
-enum {
- float_round_nearest_even = 0,
- float_round_to_zero = 1,
- float_round_up = 2,
- float_round_down = 3
-};
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE floating-point exception flags.
-*----------------------------------------------------------------------------*/
-extern int float_exception_flags;
-enum {
- float_flag_inexact = 1,
- float_flag_divbyzero = 2,
- float_flag_underflow = 4,
- float_flag_overflow = 8,
- float_flag_invalid = 16
-};
-
-/*----------------------------------------------------------------------------
-| Routine to raise any or all of the software IEC/IEEE floating-point
-| exception flags.
-*----------------------------------------------------------------------------*/
-void float_raise( int );
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE integer-to-floating-point conversion routines.
-*----------------------------------------------------------------------------*/
-float32 int32_to_float32( int );
-float64 int32_to_float64( int );
-#ifdef FLOATX80
-floatx80 int32_to_floatx80( int );
-#endif
-#ifdef FLOAT128
-float128 int32_to_float128( int );
-#endif
-float32 int64_to_float32( long long );
-float64 int64_to_float64( long long );
-#ifdef FLOATX80
-floatx80 int64_to_floatx80( long long );
-#endif
-#ifdef FLOAT128
-float128 int64_to_float128( long long );
+#ifdef __cplusplus
+extern "C" {
#endif
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE single-precision conversion routines.
-*----------------------------------------------------------------------------*/
-int float32_to_int32( float32 );
-int float32_to_int32_round_to_zero( float32 );
-long long float32_to_int64( float32 );
-long long float32_to_int64_round_to_zero( float32 );
-float64 float32_to_float64( float32 );
-#ifdef FLOATX80
-floatx80 float32_to_floatx80( float32 );
-#endif
-#ifdef FLOAT128
-float128 float32_to_float128( float32 );
-#endif
+#ifndef _SOFTFLOAT_H
+#define _SOFTFLOAT_H
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE single-precision operations.
-*----------------------------------------------------------------------------*/
-float32 float32_round_to_int( float32 );
-float32 float32_add( float32, float32 );
-float32 float32_sub( float32, float32 );
-float32 float32_mul( float32, float32 );
-float32 float32_div( float32, float32 );
-float32 float32_rem( float32, float32 );
-float32 float32_sqrt( float32 );
-int float32_eq( float32, float32 );
-int float32_le( float32, float32 );
-int float32_lt( float32, float32 );
-int float32_eq_signaling( float32, float32 );
-int float32_le_quiet( float32, float32 );
-int float32_lt_quiet( float32, float32 );
-int float32_is_signaling_nan( float32 );
+#include "softfloat-header"
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE double-precision conversion routines.
-*----------------------------------------------------------------------------*/
-int float64_to_int32( float64 );
-int float64_to_int32_round_to_zero( float64 );
-long long float64_to_int64( float64 );
-long long float64_to_int64_round_to_zero( float64 );
-float32 float64_to_float32( float64 );
-#ifdef FLOATX80
-floatx80 float64_to_floatx80( float64 );
#endif
-#ifdef FLOAT128
-float128 float64_to_float128( float64 );
-#endif
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE double-precision operations.
-*----------------------------------------------------------------------------*/
-float64 float64_round_to_int( float64 );
-float64 float64_add( float64, float64 );
-float64 float64_sub( float64, float64 );
-float64 float64_mul( float64, float64 );
-float64 float64_div( float64, float64 );
-float64 float64_rem( float64, float64 );
-float64 float64_sqrt( float64 );
-int float64_eq( float64, float64 );
-int float64_le( float64, float64 );
-int float64_lt( float64, float64 );
-int float64_eq_signaling( float64, float64 );
-int float64_le_quiet( float64, float64 );
-int float64_lt_quiet( float64, float64 );
-int float64_is_signaling_nan( float64 );
-#ifdef FLOATX80
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE extended double-precision conversion routines.
-*----------------------------------------------------------------------------*/
-int floatx80_to_int32( floatx80 );
-int floatx80_to_int32_round_to_zero( floatx80 );
-long long floatx80_to_int64( floatx80 );
-long long floatx80_to_int64_round_to_zero( floatx80 );
-float32 floatx80_to_float32( floatx80 );
-float64 floatx80_to_float64( floatx80 );
-#ifdef FLOAT128
-float128 floatx80_to_float128( floatx80 );
+#ifdef __cplusplus
+}
#endif
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE extended double-precision rounding precision. Valid
-| values are 32, 64, and 80.
-*----------------------------------------------------------------------------*/
-extern int floatx80_rounding_precision;
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE extended double-precision operations.
-*----------------------------------------------------------------------------*/
-floatx80 floatx80_round_to_int( floatx80 );
-floatx80 floatx80_add( floatx80, floatx80 );
-floatx80 floatx80_sub( floatx80, floatx80 );
-floatx80 floatx80_mul( floatx80, floatx80 );
-floatx80 floatx80_div( floatx80, floatx80 );
-floatx80 floatx80_rem( floatx80, floatx80 );
-floatx80 floatx80_sqrt( floatx80 );
-int floatx80_eq( floatx80, floatx80 );
-int floatx80_le( floatx80, floatx80 );
-int floatx80_lt( floatx80, floatx80 );
-int floatx80_eq_signaling( floatx80, floatx80 );
-int floatx80_le_quiet( floatx80, floatx80 );
-int floatx80_lt_quiet( floatx80, floatx80 );
-int floatx80_is_signaling_nan( floatx80 );
-
-#endif
-
-#ifdef FLOAT128
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE quadruple-precision conversion routines.
-*----------------------------------------------------------------------------*/
-int float128_to_int32( float128 );
-int float128_to_int32_round_to_zero( float128 );
-long long float128_to_int64( float128 );
-long long float128_to_int64_round_to_zero( float128 );
-float32 float128_to_float32( float128 );
-float64 float128_to_float64( float128 );
-#ifdef FLOATX80
-floatx80 float128_to_floatx80( float128 );
-#endif
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE quadruple-precision operations.
-*----------------------------------------------------------------------------*/
-float128 float128_round_to_int( float128 );
-float128 float128_add( float128, float128 );
-float128 float128_sub( float128, float128 );
-float128 float128_mul( float128, float128 );
-float128 float128_div( float128, float128 );
-float128 float128_rem( float128, float128 );
-float128 float128_sqrt( float128 );
-int float128_eq( float128, float128 );
-int float128_le( float128, float128 );
-int float128_lt( float128, float128 );
-int float128_eq_signaling( float128, float128 );
-int float128_le_quiet( float128, float128 );
-int float128_lt_quiet( float128, float128 );
-int float128_is_signaling_nan( float128 );
-
-#endif
-
projects / riscv-isa-sim.git / blobdiff