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+
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+/*
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+===============================================================================
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+
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+This C header file is part of the SoftFloat IEC/IEEE Floating-point
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+Arithmetic Package, Release 2.
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+
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+Written by John R. Hauser. This work was made possible in part by the
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+International Computer Science Institute, located at Suite 600, 1947 Center
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+Street, Berkeley, California 94704. Funding was partially provided by the
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+National Science Foundation under grant MIP-9311980. The original version
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+of this code was written as part of a project to build a fixed-point vector
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+processor in collaboration with the University of California at Berkeley,
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+overseen by Profs. Nelson Morgan and John Wawrzynek. More information
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+is available through the Web page
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+http://www.jhauser.us/arithmetic/SoftFloat-2b/SoftFloat-source.txt
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+
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+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort
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+has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
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+TIMES RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO
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+PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
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+AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
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+
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+Derivative works are acceptable, even for commercial purposes, so long as
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+(1) they include prominent notice that the work is derivative, and (2) they
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+include prominent notice akin to these three paragraphs for those parts of
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+this code that are retained.
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+
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+===============================================================================
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+*/
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+
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+#ifndef __SOFTFLOAT_H__
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+#define __SOFTFLOAT_H__
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+
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+
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+/*
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+-------------------------------------------------------------------------------
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+The macro `FLOATX80' must be defined to enable the extended double-precision
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+floating-point format `floatx80'. If this macro is not defined, the
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+`floatx80' type will not be defined, and none of the functions that either
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+input or output the `floatx80' type will be defined.
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+-------------------------------------------------------------------------------
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+*/
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+#ifdef CONFIG_FPE_NWFPE_XP
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+#define FLOATX80
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+#endif
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+
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+/*
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+-------------------------------------------------------------------------------
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+Software IEC/IEEE floating-point types.
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+-------------------------------------------------------------------------------
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+*/
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+typedef u32 float32;
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+typedef u64 float64;
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+typedef struct {
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+#ifdef __ARMEB__
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+ u16 __padding;
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+ u16 high;
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+#else
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+ u16 high;
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+ u16 __padding;
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+#endif
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+ u64 low;
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+} __attribute__ ((packed,aligned(4))) floatx80;
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+
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+/*
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+-------------------------------------------------------------------------------
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+Software IEC/IEEE floating-point underflow tininess-detection mode.
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+-------------------------------------------------------------------------------
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+*/
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+extern signed char float_detect_tininess;
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+enum {
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+ float_tininess_after_rounding = 0,
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+ float_tininess_before_rounding = 1
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+};
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+
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+/*
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+-------------------------------------------------------------------------------
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+Software IEC/IEEE floating-point rounding mode.
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+-------------------------------------------------------------------------------
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+*/
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+//extern int8 float_rounding_mode;
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+enum {
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+ float_round_nearest_even = 0,
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+ float_round_to_zero = 1,
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+ float_round_down = 2,
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+ float_round_up = 3
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+};
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+
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+/*
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+-------------------------------------------------------------------------------
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+Software IEC/IEEE floating-point exception flags.
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+-------------------------------------------------------------------------------
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+enum {
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+ float_flag_inexact = 1,
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+ float_flag_underflow = 2,
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+ float_flag_overflow = 4,
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+ float_flag_divbyzero = 8,
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+ float_flag_invalid = 16
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+};
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+
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+ScottB: November 4, 1998
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+Changed the enumeration to match the bit order in the FPA11.
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+*/
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+
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+enum {
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+ float_flag_invalid = 1,
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+ float_flag_divbyzero = 2,
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+ float_flag_overflow = 4,
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+ float_flag_underflow = 8,
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+ float_flag_inexact = 16
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+};
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+
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+/*
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+-------------------------------------------------------------------------------
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+Routine to raise any or all of the software IEC/IEEE floating-point
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+exception flags.
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+-------------------------------------------------------------------------------
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+*/
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+void float_raise( signed char );
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+
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+/*
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+-------------------------------------------------------------------------------
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+Software IEC/IEEE integer-to-floating-point conversion routines.
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+-------------------------------------------------------------------------------
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+*/
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+float32 int32_to_float32( struct roundingData *, signed int );
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+float64 int32_to_float64( signed int );
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+#ifdef FLOATX80
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+floatx80 int32_to_floatx80( signed int );
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+#endif
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+
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+/*
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+-------------------------------------------------------------------------------
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+Software IEC/IEEE single-precision conversion routines.
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+-------------------------------------------------------------------------------
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+*/
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+signed int float32_to_int32( struct roundingData *, float32 );
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+signed int float32_to_int32_round_to_zero( float32 );
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+float64 float32_to_float64( float32 );
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+#ifdef FLOATX80
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+floatx80 float32_to_floatx80( float32 );
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+#endif
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+
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+/*
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+-------------------------------------------------------------------------------
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+Software IEC/IEEE single-precision operations.
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+-------------------------------------------------------------------------------
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+*/
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+float32 float32_round_to_int( struct roundingData*, float32 );
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+float32 float32_add( struct roundingData *, float32, float32 );
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+float32 float32_sub( struct roundingData *, float32, float32 );
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+float32 float32_mul( struct roundingData *, float32, float32 );
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+float32 float32_div( struct roundingData *, float32, float32 );
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+float32 float32_rem( struct roundingData *, float32, float32 );
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+float32 float32_sqrt( struct roundingData*, float32 );
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+char float32_eq( float32, float32 );
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+char float32_le( float32, float32 );
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+char float32_lt( float32, float32 );
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+char float32_eq_signaling( float32, float32 );
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+char float32_le_quiet( float32, float32 );
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+char float32_lt_quiet( float32, float32 );
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+char float32_is_signaling_nan( float32 );
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+
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+/*
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+-------------------------------------------------------------------------------
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+Software IEC/IEEE double-precision conversion routines.
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+-------------------------------------------------------------------------------
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+*/
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+signed int float64_to_int32( struct roundingData *, float64 );
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+signed int float64_to_int32_round_to_zero( float64 );
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+float32 float64_to_float32( struct roundingData *, float64 );
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+#ifdef FLOATX80
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+floatx80 float64_to_floatx80( float64 );
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+#endif
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+
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+/*
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+-------------------------------------------------------------------------------
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+Software IEC/IEEE double-precision operations.
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+-------------------------------------------------------------------------------
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+*/
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+float64 float64_round_to_int( struct roundingData *, float64 );
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