1 /* Native implementation of soft float functions. Only a single status
2 context is supported */
6 void set_float_rounding_mode(int val STATUS_PARAM)
8 STATUS(float_rounding_mode) = val;
9 #if defined(_BSD) && !defined(__APPLE__)
11 #elif defined(__arm__)
19 void set_floatx80_rounding_precision(int val STATUS_PARAM)
21 STATUS(floatx80_rounding_precision) = val;
26 #define lrint(d) ((int32_t)rint(d))
27 #define llrint(d) ((int64_t)rint(d))
30 #if defined(__powerpc__)
32 /* correct (but slow) PowerPC rint() (glibc version is incorrect) */
33 double qemu_rint(double x)
35 double y = 4503599627370496.0;
46 #define rint qemu_rint
49 /*----------------------------------------------------------------------------
50 | Software IEC/IEEE integer-to-floating-point conversion routines.
51 *----------------------------------------------------------------------------*/
52 float32 int32_to_float32(int v STATUS_PARAM)
57 float64 int32_to_float64(int v STATUS_PARAM)
63 floatx80 int32_to_floatx80(int v STATUS_PARAM)
68 float32 int64_to_float32( int64_t v STATUS_PARAM)
72 float64 int64_to_float64( int64_t v STATUS_PARAM)
77 floatx80 int64_to_floatx80( int64_t v STATUS_PARAM)
83 /*----------------------------------------------------------------------------
84 | Software IEC/IEEE single-precision conversion routines.
85 *----------------------------------------------------------------------------*/
86 int float32_to_int32( float32 a STATUS_PARAM)
90 int float32_to_int32_round_to_zero( float32 a STATUS_PARAM)
94 int64_t float32_to_int64( float32 a STATUS_PARAM)
99 int64_t float32_to_int64_round_to_zero( float32 a STATUS_PARAM)
104 float64 float32_to_float64( float32 a STATUS_PARAM)
109 floatx80 float32_to_floatx80( float32 a STATUS_PARAM)
115 /*----------------------------------------------------------------------------
116 | Software IEC/IEEE single-precision operations.
117 *----------------------------------------------------------------------------*/
118 float32 float32_round_to_int( float32 a STATUS_PARAM)
123 float32 float32_rem( float32 a, float32 b STATUS_PARAM)
125 return remainderf(a, b);
128 float32 float32_sqrt( float32 a STATUS_PARAM)
132 char float32_compare( float32 a, float32 b STATUS_PARAM )
144 char float32_compare_quiet( float32 a, float32 b STATUS_PARAM )
150 } else if (isgreater(a, b)) {
156 char float32_is_signaling_nan( float32 a1)
162 return ( ( ( a>>22 ) & 0x1FF ) == 0x1FE ) && ( a & 0x003FFFFF );
165 /*----------------------------------------------------------------------------
166 | Software IEC/IEEE double-precision conversion routines.
167 *----------------------------------------------------------------------------*/
168 int float64_to_int32( float64 a STATUS_PARAM)
172 int float64_to_int32_round_to_zero( float64 a STATUS_PARAM)
176 int64_t float64_to_int64( float64 a STATUS_PARAM)
180 int64_t float64_to_int64_round_to_zero( float64 a STATUS_PARAM)
184 float32 float64_to_float32( float64 a STATUS_PARAM)
189 floatx80 float64_to_floatx80( float64 a STATUS_PARAM)
195 float128 float64_to_float128( float64 a STATUS_PARAM)
201 /*----------------------------------------------------------------------------
202 | Software IEC/IEEE double-precision operations.
203 *----------------------------------------------------------------------------*/
204 float64 float64_round_to_int( float64 a STATUS_PARAM )
207 switch(STATUS(float_rounding_mode)) {
209 case float_round_nearest_even:
210 asm("rndd %0, %1" : "=f" (a) : "f"(a));
212 case float_round_down:
213 asm("rnddm %0, %1" : "=f" (a) : "f"(a));
216 asm("rnddp %0, %1" : "=f" (a) : "f"(a));
218 case float_round_to_zero:
219 asm("rnddz %0, %1" : "=f" (a) : "f"(a));
227 float64 float64_rem( float64 a, float64 b STATUS_PARAM)
229 return remainder(a, b);
232 float64 float64_sqrt( float64 a STATUS_PARAM)
236 char float64_compare( float64 a, float64 b STATUS_PARAM )
248 char float64_compare_quiet( float64 a, float64 b STATUS_PARAM )
254 } else if (isgreater(a, b)) {
260 char float64_is_signaling_nan( float64 a1)
267 ( ( ( a>>51 ) & 0xFFF ) == 0xFFE )
268 && ( a & LIT64( 0x0007FFFFFFFFFFFF ) );
274 /*----------------------------------------------------------------------------
275 | Software IEC/IEEE extended double-precision conversion routines.
276 *----------------------------------------------------------------------------*/
277 int floatx80_to_int32( floatx80 a STATUS_PARAM)
281 int floatx80_to_int32_round_to_zero( floatx80 a STATUS_PARAM)
285 int64_t floatx80_to_int64( floatx80 a STATUS_PARAM)
289 int64_t floatx80_to_int64_round_to_zero( floatx80 a STATUS_PARAM)
293 float32 floatx80_to_float32( floatx80 a STATUS_PARAM)
297 float64 floatx80_to_float64( floatx80 a STATUS_PARAM)
302 /*----------------------------------------------------------------------------
303 | Software IEC/IEEE extended double-precision operations.
304 *----------------------------------------------------------------------------*/
305 floatx80 floatx80_round_to_int( floatx80 a STATUS_PARAM)
309 floatx80 floatx80_rem( floatx80 a, floatx80 b STATUS_PARAM)
311 return remainderl(a, b);
313 floatx80 floatx80_sqrt( floatx80 a STATUS_PARAM)
317 char floatx80_compare( floatx80 a, floatx80 b STATUS_PARAM )
329 char floatx80_compare_quiet( floatx80 a, floatx80 b STATUS_PARAM )
335 } else if (isgreater(a, b)) {
341 char floatx80_is_signaling_nan( floatx80 a1)
345 return ( ( u.i.high & 0x7FFF ) == 0x7FFF ) && (bits64) ( u.i.low<<1 );