1 files changed, 316 insertions, 0 deletions
diff --git a/StdLib/Include/Arm/softfloat.h b/StdLib/Include/Arm/softfloat.h
new file mode 100644
index 0000000000..d52c5a9f8d
--- /dev/null
+++ b/StdLib/Include/Arm/softfloat.h
@@ -0,0 +1,316 @@
+/*  $NetBSD: softfloat.h,v 1.10 2013/04/24 18:04:46 matt Exp $  */
+
+/* This is a derivative work. */
+
+/*
+===============================================================================
+
+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 */
+
+#include <stdint.h>
+#include <machine/ieeefp.h>
+
+/*
+-------------------------------------------------------------------------------
+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.
+-------------------------------------------------------------------------------
+*/
+#ifndef SOFTFLOAT_FOR_GCC
+extern int float_detect_tininess;
+#endif
+enum {
+    float_tininess_after_rounding  = 0,
+    float_tininess_before_rounding = 1
+};
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE floating-point rounding mode.
+-------------------------------------------------------------------------------
+*/
+extern fp_rnd float_rounding_mode;
+#define float_round_nearest_even FP_RN
+#define float_round_to_zero      FP_RZ
+#define float_round_down         FP_RM
+#define float_round_up           FP_RP
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE floating-point exception flags.
+-------------------------------------------------------------------------------
+*/
+extern fp_except float_exception_flags;
+extern fp_except float_exception_mask;
+enum {
+    float_flag_inexact   = FP_X_IMP,
+    float_flag_underflow = FP_X_UFL,
+    float_flag_overflow  = FP_X_OFL,
+    float_flag_divbyzero = FP_X_DZ,
+    float_flag_invalid   = FP_X_INV
+};
+
+/*
+-------------------------------------------------------------------------------
+Routine to raise any or all of the software IEC/IEEE floating-point
+exception flags.
+-------------------------------------------------------------------------------
+*/
+void float_raise( fp_except );
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE integer-to-floating-point conversion routines.
+-------------------------------------------------------------------------------
+*/
+float32 int32_to_float32( int32 );
+float32 uint32_to_float32( uint32 );
+float64 int32_to_float64( int32 );
+float64 uint32_to_float64( uint32 );
+#ifdef FLOATX80
+floatx80 int32_to_floatx80( int32 );
+floatx80 uint32_to_floatx80( uint32 );
+#endif
+#ifdef FLOAT128
+float128 int32_to_float128( int32 );
+float128 uint32_to_float128( uint32 );
+#endif
+#ifndef SOFTFLOAT_FOR_GCC /* __floatdi?f is in libgcc2.c */
+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 );
+#endif
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE single-precision conversion routines.
+-------------------------------------------------------------------------------
+*/
+int float32_to_int32( float32 );
+int float32_to_int32_round_to_zero( float32 );
+#if defined(SOFTFLOAT_FOR_GCC) && defined(SOFTFLOAT_NEED_FIXUNS)
+unsigned int float32_to_uint32_round_to_zero( float32 );
+#endif
+#ifndef SOFTFLOAT_FOR_GCC /* __fix?fdi provided by libgcc2.c */
+long long float32_to_int64( float32 );
+long long float32_to_int64_round_to_zero( float32 );
+#endif
+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 );
+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 );
+#ifndef SOFTFLOAT_FOR_GCC
+int float32_is_signaling_nan( float32 );
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE double-precision conversion routines.
+-------------------------------------------------------------------------------
+*/
+int float64_to_int32( float64 );
+int float64_to_int32_round_to_zero( float64 );
+#if defined(SOFTFLOAT_FOR_GCC) && defined(SOFTFLOAT_NEED_FIXUNS)
+unsigned int float64_to_uint32_round_to_zero( float64 );
+#endif
+#ifndef SOFTFLOAT_FOR_GCC /* __fix?fdi provided by libgcc2.c */
+long long float64_to_int64( float64 );
+long long float64_to_int64_round_to_zero( float64 );
+#endif
+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 );
+#ifndef SOFTFLOAT_FOR_GCC
+int float64_is_signaling_nan( float64 );
+#endif
+
+#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 );
+#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