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Diffstat (limited to 'StdLib/LibC/Softfloat/templates/softfloat.h')
-rw-r--r-- | StdLib/LibC/Softfloat/templates/softfloat.h | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/StdLib/LibC/Softfloat/templates/softfloat.h b/StdLib/LibC/Softfloat/templates/softfloat.h new file mode 100644 index 0000000000..8c0fe10134 --- /dev/null +++ b/StdLib/LibC/Softfloat/templates/softfloat.h @@ -0,0 +1,290 @@ +
+/*
+===============================================================================
+
+This C header file is part of the SoftFloat IEC/IEEE Floating-point
+Arithmetic Package, Release 2a.
+
+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://HTTP.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 ANY
+AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
+
+Derivative works are acceptable, even for commercial purposes, so long as
+(1) they include prominent notice that the work is derivative, and (2) they
+include prominent notice akin to 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 !!!bits32 float32;
+typedef !!!bits64 float64;
+#ifdef FLOATX80
+typedef struct {
+ !!!bits16 high;
+ !!!bits64 low;
+} floatx80;
+#endif
+#ifdef FLOAT128
+typedef struct {
+ !!!bits64 high, low;
+} float128;
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE floating-point underflow tininess-detection mode.
+-------------------------------------------------------------------------------
+*/
+extern !!!int8 float_detect_tininess;
+enum {
+ float_tininess_after_rounding = 0,
+ float_tininess_before_rounding = 1
+};
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE floating-point rounding mode.
+-------------------------------------------------------------------------------
+*/
+extern !!!int8 float_rounding_mode;
+enum {
+ float_round_nearest_even = 0,
+ float_round_to_zero = 1,
+ float_round_down = 2,
+ float_round_up = 3
+};
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE floating-point exception flags.
+-------------------------------------------------------------------------------
+*/
+extern !!!int8 float_exception_flags;
+enum {
+ float_flag_inexact = 1,
+ float_flag_underflow = 2,
+ float_flag_overflow = 4,
+ float_flag_divbyzero = 8,
+ float_flag_invalid = 16
+};
+
+/*
+-------------------------------------------------------------------------------
+Routine to raise any or all of the software IEC/IEEE floating-point
+exception flags.
+-------------------------------------------------------------------------------
+*/
+void float_raise( !!!int8 );
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE integer-to-floating-point conversion routines.
+-------------------------------------------------------------------------------
+*/
+float32 int32_to_float32( !!!int32 );
+float64 int32_to_float64( !!!int32 );
+#ifdef FLOATX80
+floatx80 int32_to_floatx80( !!!int32 );
+#endif
+#ifdef FLOAT128
+float128 int32_to_float128( !!!int32 );
+#endif
+float32 int64_to_float32( !!!int64 );
+float64 int64_to_float64( !!!int64 );
+#ifdef FLOATX80
+floatx80 int64_to_floatx80( !!!int64 );
+#endif
+#ifdef FLOAT128
+float128 int64_to_float128( !!!int64 );
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE single-precision conversion routines.
+-------------------------------------------------------------------------------
+*/
+!!!int32 float32_to_int32( float32 );
+!!!int32 float32_to_int32_round_to_zero( float32 );
+!!!int64 float32_to_int64( float32 );
+!!!int64 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
+
+/*
+-------------------------------------------------------------------------------
+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 );
+!!!flag float32_eq( float32, float32 );
+!!!flag float32_le( float32, float32 );
+!!!flag float32_lt( float32, float32 );
+!!!flag float32_eq_signaling( float32, float32 );
+!!!flag float32_le_quiet( float32, float32 );
+!!!flag float32_lt_quiet( float32, float32 );
+!!!flag float32_is_signaling_nan( float32 );
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE double-precision conversion routines.
+-------------------------------------------------------------------------------
+*/
+!!!int32 float64_to_int32( float64 );
+!!!int32 float64_to_int32_round_to_zero( float64 );
+!!!int64 float64_to_int64( float64 );
+!!!int64 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 );
+!!!flag float64_eq( float64, float64 );
+!!!flag float64_le( float64, float64 );
+!!!flag float64_lt( float64, float64 );
+!!!flag float64_eq_signaling( float64, float64 );
+!!!flag float64_le_quiet( float64, float64 );
+!!!flag float64_lt_quiet( float64, float64 );
+!!!flag float64_is_signaling_nan( float64 );
+
+#ifdef FLOATX80
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE extended double-precision conversion routines.
+-------------------------------------------------------------------------------
+*/
+!!!int32 floatx80_to_int32( floatx80 );
+!!!int32 floatx80_to_int32_round_to_zero( floatx80 );
+!!!int64 floatx80_to_int64( floatx80 );
+!!!int64 floatx80_to_int64_round_to_zero( floatx80 );
+float32 floatx80_to_float32( floatx80 );
+float64 floatx80_to_float64( floatx80 );
+#ifdef FLOAT128
+float128 floatx80_to_float128( floatx80 );
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE extended double-precision rounding precision. Valid
+values are 32, 64, and 80.
+-------------------------------------------------------------------------------
+*/
+extern !!!int8 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 );
+!!!flag floatx80_eq( floatx80, floatx80 );
+!!!flag floatx80_le( floatx80, floatx80 );
+!!!flag floatx80_lt( floatx80, floatx80 );
+!!!flag floatx80_eq_signaling( floatx80, floatx80 );
+!!!flag floatx80_le_quiet( floatx80, floatx80 );
+!!!flag floatx80_lt_quiet( floatx80, floatx80 );
+!!!flag floatx80_is_signaling_nan( floatx80 );
+
+#endif
+
+#ifdef FLOAT128
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE quadruple-precision conversion routines.
+-------------------------------------------------------------------------------
+*/
+!!!int32 float128_to_int32( float128 );
+!!!int32 float128_to_int32_round_to_zero( float128 );
+!!!int64 float128_to_int64( float128 );
+!!!int64 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 );
+!!!flag float128_eq( float128, float128 );
+!!!flag float128_le( float128, float128 );
+!!!flag float128_lt( float128, float128 );
+!!!flag float128_eq_signaling( float128, float128 );
+!!!flag float128_le_quiet( float128, float128 );
+!!!flag float128_lt_quiet( float128, float128 );
+!!!flag float128_is_signaling_nan( float128 );
+
+#endif
+
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