--- /dev/null
+/* $NetBSD: softfloat.h,v 1.10 2013/04/24 18:04:46 matt Exp $ */\r
+\r
+/* This is a derivative work. */\r
+\r
+/*\r
+===============================================================================\r
+\r
+This C header file is part of the SoftFloat IEC/IEEE Floating-point\r
+Arithmetic Package, Release 2a.\r
+\r
+Written by John R. Hauser. This work was made possible in part by the\r
+International Computer Science Institute, located at Suite 600, 1947 Center\r
+Street, Berkeley, California 94704. Funding was partially provided by the\r
+National Science Foundation under grant MIP-9311980. The original version\r
+of this code was written as part of a project to build a fixed-point vector\r
+processor in collaboration with the University of California at Berkeley,\r
+overseen by Profs. Nelson Morgan and John Wawrzynek. More information\r
+is available through the Web page `http://HTTP.CS.Berkeley.EDU/~jhauser/\r
+arithmetic/SoftFloat.html'.\r
+\r
+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort\r
+has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT\r
+TIMES RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO\r
+PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY\r
+AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.\r
+\r
+Derivative works are acceptable, even for commercial purposes, so long as\r
+(1) they include prominent notice that the work is derivative, and (2) they\r
+include prominent notice akin to these four paragraphs for those parts of\r
+this code that are retained.\r
+\r
+===============================================================================\r
+*/\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+The macro `FLOATX80' must be defined to enable the extended double-precision\r
+floating-point format `floatx80'. If this macro is not defined, the\r
+`floatx80' type will not be defined, and none of the functions that either\r
+input or output the `floatx80' type will be defined. The same applies to\r
+the `FLOAT128' macro and the quadruple-precision format `float128'.\r
+-------------------------------------------------------------------------------\r
+*/\r
+/* #define FLOATX80 */\r
+/* #define FLOAT128 */\r
+\r
+#include <stdint.h>\r
+#include <machine/ieeefp.h>\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE floating-point types.\r
+-------------------------------------------------------------------------------\r
+*/\r
+typedef unsigned int float32;\r
+typedef unsigned long long float64;\r
+#ifdef FLOATX80\r
+typedef struct {\r
+ unsigned short high;\r
+ unsigned long long low;\r
+} floatx80;\r
+#endif\r
+#ifdef FLOAT128\r
+typedef struct {\r
+ unsigned long long high, low;\r
+} float128;\r
+#endif\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE floating-point underflow tininess-detection mode.\r
+-------------------------------------------------------------------------------\r
+*/\r
+#ifndef SOFTFLOAT_FOR_GCC\r
+extern int float_detect_tininess;\r
+#endif\r
+enum {\r
+ float_tininess_after_rounding = 0,\r
+ float_tininess_before_rounding = 1\r
+};\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE floating-point rounding mode.\r
+-------------------------------------------------------------------------------\r
+*/\r
+extern fp_rnd float_rounding_mode;\r
+#define float_round_nearest_even FP_RN\r
+#define float_round_to_zero FP_RZ\r
+#define float_round_down FP_RM\r
+#define float_round_up FP_RP\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE floating-point exception flags.\r
+-------------------------------------------------------------------------------\r
+*/\r
+extern fp_except float_exception_flags;\r
+extern fp_except float_exception_mask;\r
+enum {\r
+ float_flag_inexact = FP_X_IMP,\r
+ float_flag_underflow = FP_X_UFL,\r
+ float_flag_overflow = FP_X_OFL,\r
+ float_flag_divbyzero = FP_X_DZ,\r
+ float_flag_invalid = FP_X_INV\r
+};\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Routine to raise any or all of the software IEC/IEEE floating-point\r
+exception flags.\r
+-------------------------------------------------------------------------------\r
+*/\r
+void float_raise( fp_except );\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE integer-to-floating-point conversion routines.\r
+-------------------------------------------------------------------------------\r
+*/\r
+float32 int32_to_float32( int32 );\r
+float32 uint32_to_float32( uint32 );\r
+float64 int32_to_float64( int32 );\r
+float64 uint32_to_float64( uint32 );\r
+#ifdef FLOATX80\r
+floatx80 int32_to_floatx80( int32 );\r
+floatx80 uint32_to_floatx80( uint32 );\r
+#endif\r
+#ifdef FLOAT128\r
+float128 int32_to_float128( int32 );\r
+float128 uint32_to_float128( uint32 );\r
+#endif\r
+#ifndef SOFTFLOAT_FOR_GCC /* __floatdi?f is in libgcc2.c */\r
+float32 int64_to_float32( long long );\r
+float64 int64_to_float64( long long );\r
+#ifdef FLOATX80\r
+floatx80 int64_to_floatx80( long long );\r
+#endif\r
+#ifdef FLOAT128\r
+float128 int64_to_float128( long long );\r
+#endif\r
+#endif\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE single-precision conversion routines.\r
+-------------------------------------------------------------------------------\r
+*/\r
+int float32_to_int32( float32 );\r
+int float32_to_int32_round_to_zero( float32 );\r
+#if defined(SOFTFLOAT_FOR_GCC) && defined(SOFTFLOAT_NEED_FIXUNS)\r
+unsigned int float32_to_uint32_round_to_zero( float32 );\r
+#endif\r
+#ifndef SOFTFLOAT_FOR_GCC /* __fix?fdi provided by libgcc2.c */\r
+long long float32_to_int64( float32 );\r
+long long float32_to_int64_round_to_zero( float32 );\r
+#endif\r
+float64 float32_to_float64( float32 );\r
+#ifdef FLOATX80\r
+floatx80 float32_to_floatx80( float32 );\r
+#endif\r
+#ifdef FLOAT128\r
+float128 float32_to_float128( float32 );\r
+#endif\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE single-precision operations.\r
+-------------------------------------------------------------------------------\r
+*/\r
+float32 float32_round_to_int( float32 );\r
+float32 float32_add( float32, float32 );\r
+float32 float32_sub( float32, float32 );\r
+float32 float32_mul( float32, float32 );\r
+float32 float32_div( float32, float32 );\r
+float32 float32_rem( float32, float32 );\r
+float32 float32_sqrt( float32 );\r
+int float32_eq( float32, float32 );\r
+int float32_le( float32, float32 );\r
+int float32_lt( float32, float32 );\r
+int float32_eq_signaling( float32, float32 );\r
+int float32_le_quiet( float32, float32 );\r
+int float32_lt_quiet( float32, float32 );\r
+#ifndef SOFTFLOAT_FOR_GCC\r
+int float32_is_signaling_nan( float32 );\r
+#endif\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE double-precision conversion routines.\r
+-------------------------------------------------------------------------------\r
+*/\r
+int float64_to_int32( float64 );\r
+int float64_to_int32_round_to_zero( float64 );\r
+#if defined(SOFTFLOAT_FOR_GCC) && defined(SOFTFLOAT_NEED_FIXUNS)\r
+unsigned int float64_to_uint32_round_to_zero( float64 );\r
+#endif\r
+#ifndef SOFTFLOAT_FOR_GCC /* __fix?fdi provided by libgcc2.c */\r
+long long float64_to_int64( float64 );\r
+long long float64_to_int64_round_to_zero( float64 );\r
+#endif\r
+float32 float64_to_float32( float64 );\r
+#ifdef FLOATX80\r
+floatx80 float64_to_floatx80( float64 );\r
+#endif\r
+#ifdef FLOAT128\r
+float128 float64_to_float128( float64 );\r
+#endif\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE double-precision operations.\r
+-------------------------------------------------------------------------------\r
+*/\r
+float64 float64_round_to_int( float64 );\r
+float64 float64_add( float64, float64 );\r
+float64 float64_sub( float64, float64 );\r
+float64 float64_mul( float64, float64 );\r
+float64 float64_div( float64, float64 );\r
+float64 float64_rem( float64, float64 );\r
+float64 float64_sqrt( float64 );\r
+int float64_eq( float64, float64 );\r
+int float64_le( float64, float64 );\r
+int float64_lt( float64, float64 );\r
+int float64_eq_signaling( float64, float64 );\r
+int float64_le_quiet( float64, float64 );\r
+int float64_lt_quiet( float64, float64 );\r
+#ifndef SOFTFLOAT_FOR_GCC\r
+int float64_is_signaling_nan( float64 );\r
+#endif\r
+\r
+#ifdef FLOATX80\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE extended double-precision conversion routines.\r
+-------------------------------------------------------------------------------\r
+*/\r
+int floatx80_to_int32( floatx80 );\r
+int floatx80_to_int32_round_to_zero( floatx80 );\r
+long long floatx80_to_int64( floatx80 );\r
+long long floatx80_to_int64_round_to_zero( floatx80 );\r
+float32 floatx80_to_float32( floatx80 );\r
+float64 floatx80_to_float64( floatx80 );\r
+#ifdef FLOAT128\r
+float128 floatx80_to_float128( floatx80 );\r
+#endif\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE extended double-precision rounding precision. Valid\r
+values are 32, 64, and 80.\r
+-------------------------------------------------------------------------------\r
+*/\r
+extern int floatx80_rounding_precision;\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE extended double-precision operations.\r
+-------------------------------------------------------------------------------\r
+*/\r
+floatx80 floatx80_round_to_int( floatx80 );\r
+floatx80 floatx80_add( floatx80, floatx80 );\r
+floatx80 floatx80_sub( floatx80, floatx80 );\r
+floatx80 floatx80_mul( floatx80, floatx80 );\r
+floatx80 floatx80_div( floatx80, floatx80 );\r
+floatx80 floatx80_rem( floatx80, floatx80 );\r
+floatx80 floatx80_sqrt( floatx80 );\r
+int floatx80_eq( floatx80, floatx80 );\r
+int floatx80_le( floatx80, floatx80 );\r
+int floatx80_lt( floatx80, floatx80 );\r
+int floatx80_eq_signaling( floatx80, floatx80 );\r
+int floatx80_le_quiet( floatx80, floatx80 );\r
+int floatx80_lt_quiet( floatx80, floatx80 );\r
+int floatx80_is_signaling_nan( floatx80 );\r
+\r
+#endif\r
+\r
+#ifdef FLOAT128\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE quadruple-precision conversion routines.\r
+-------------------------------------------------------------------------------\r
+*/\r
+int float128_to_int32( float128 );\r
+int float128_to_int32_round_to_zero( float128 );\r
+long long float128_to_int64( float128 );\r
+long long float128_to_int64_round_to_zero( float128 );\r
+float32 float128_to_float32( float128 );\r
+float64 float128_to_float64( float128 );\r
+#ifdef FLOATX80\r
+floatx80 float128_to_floatx80( float128 );\r
+#endif\r
+\r
+/*\r
+-------------------------------------------------------------------------------\r
+Software IEC/IEEE quadruple-precision operations.\r
+-------------------------------------------------------------------------------\r
+*/\r
+float128 float128_round_to_int( float128 );\r
+float128 float128_add( float128, float128 );\r
+float128 float128_sub( float128, float128 );\r
+float128 float128_mul( float128, float128 );\r
+float128 float128_div( float128, float128 );\r
+float128 float128_rem( float128, float128 );\r
+float128 float128_sqrt( float128 );\r
+int float128_eq( float128, float128 );\r
+int float128_le( float128, float128 );\r
+int float128_lt( float128, float128 );\r
+int float128_eq_signaling( float128, float128 );\r
+int float128_le_quiet( float128, float128 );\r
+int float128_lt_quiet( float128, float128 );\r
+int float128_is_signaling_nan( float128 );\r
+\r
+#endif\r
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