root / fpu / softfloat-native.c @ 719f66a7
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1 | 158142c2 | bellard | /* Native implementation of soft float functions. Only a single status
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2 | 158142c2 | bellard | context is supported */
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3 | 158142c2 | bellard | #include "softfloat.h" |
4 | 158142c2 | bellard | #include <math.h> |
5 | 14d483ec | blueswir1 | #if defined(HOST_SOLARIS)
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6 | 14d483ec | blueswir1 | #include <fenv.h> |
7 | 14d483ec | blueswir1 | #endif
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8 | 158142c2 | bellard | |
9 | 158142c2 | bellard | void set_float_rounding_mode(int val STATUS_PARAM) |
10 | 158142c2 | bellard | { |
11 | 158142c2 | bellard | STATUS(float_rounding_mode) = val; |
12 | 179a2c19 | blueswir1 | #if defined(HOST_BSD) && !defined(__APPLE__) || \
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13 | 179a2c19 | blueswir1 | (defined(HOST_SOLARIS) && HOST_SOLARIS < 10)
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14 | 158142c2 | bellard | fpsetround(val); |
15 | 158142c2 | bellard | #elif defined(__arm__)
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16 | 158142c2 | bellard | /* nothing to do */
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17 | 158142c2 | bellard | #else
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18 | 158142c2 | bellard | fesetround(val); |
19 | 158142c2 | bellard | #endif
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20 | 158142c2 | bellard | } |
21 | 158142c2 | bellard | |
22 | 158142c2 | bellard | #ifdef FLOATX80
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23 | 158142c2 | bellard | void set_floatx80_rounding_precision(int val STATUS_PARAM) |
24 | 158142c2 | bellard | { |
25 | 158142c2 | bellard | STATUS(floatx80_rounding_precision) = val; |
26 | 158142c2 | bellard | } |
27 | 158142c2 | bellard | #endif
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28 | 158142c2 | bellard | |
29 | 179a2c19 | blueswir1 | #if defined(HOST_BSD) || (defined(HOST_SOLARIS) && HOST_SOLARIS < 10) |
30 | fdbb4691 | bellard | #define lrint(d) ((int32_t)rint(d))
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31 | fdbb4691 | bellard | #define llrint(d) ((int64_t)rint(d))
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32 | fdbb4691 | bellard | #define lrintf(f) ((int32_t)rint(f))
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33 | fdbb4691 | bellard | #define llrintf(f) ((int64_t)rint(f))
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34 | fdbb4691 | bellard | #define sqrtf(f) ((float)sqrt(f)) |
35 | fdbb4691 | bellard | #define remainderf(fa, fb) ((float)remainder(fa, fb)) |
36 | fdbb4691 | bellard | #define rintf(f) ((float)rint(f)) |
37 | fc81ba53 | ths | #if !defined(__sparc__) && defined(HOST_SOLARIS) && HOST_SOLARIS < 10 |
38 | 0475a5ca | ths | extern long double rintl(long double); |
39 | 0475a5ca | ths | extern long double scalbnl(long double, int); |
40 | 0475a5ca | ths | |
41 | 0475a5ca | ths | long long |
42 | 0475a5ca | ths | llrintl(long double x) { |
43 | 0475a5ca | ths | return ((long long) rintl(x)); |
44 | 0475a5ca | ths | } |
45 | 0475a5ca | ths | |
46 | 0475a5ca | ths | long
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47 | 0475a5ca | ths | lrintl(long double x) { |
48 | 0475a5ca | ths | return ((long) rintl(x)); |
49 | 0475a5ca | ths | } |
50 | 0475a5ca | ths | |
51 | 0475a5ca | ths | long double |
52 | 0475a5ca | ths | ldexpl(long double x, int n) { |
53 | 0475a5ca | ths | return (scalbnl(x, n));
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54 | 0475a5ca | ths | } |
55 | 0475a5ca | ths | #endif
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56 | 158142c2 | bellard | #endif
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57 | 158142c2 | bellard | |
58 | e58ffeb3 | malc | #if defined(_ARCH_PPC)
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59 | 158142c2 | bellard | |
60 | 158142c2 | bellard | /* correct (but slow) PowerPC rint() (glibc version is incorrect) */
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61 | 947f5fcb | malc | static double qemu_rint(double x) |
62 | 158142c2 | bellard | { |
63 | 158142c2 | bellard | double y = 4503599627370496.0; |
64 | 158142c2 | bellard | if (fabs(x) >= y)
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65 | 158142c2 | bellard | return x;
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66 | 5fafdf24 | ths | if (x < 0) |
67 | 158142c2 | bellard | y = -y; |
68 | 158142c2 | bellard | y = (x + y) - y; |
69 | 158142c2 | bellard | if (y == 0.0) |
70 | 158142c2 | bellard | y = copysign(y, x); |
71 | 158142c2 | bellard | return y;
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72 | 158142c2 | bellard | } |
73 | 158142c2 | bellard | |
74 | 158142c2 | bellard | #define rint qemu_rint
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75 | 158142c2 | bellard | #endif
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76 | 158142c2 | bellard | |
77 | 158142c2 | bellard | /*----------------------------------------------------------------------------
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78 | 158142c2 | bellard | | Software IEC/IEEE integer-to-floating-point conversion routines.
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79 | 158142c2 | bellard | *----------------------------------------------------------------------------*/
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80 | 158142c2 | bellard | float32 int32_to_float32(int v STATUS_PARAM)
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81 | 158142c2 | bellard | { |
82 | 158142c2 | bellard | return (float32)v;
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83 | 158142c2 | bellard | } |
84 | 158142c2 | bellard | |
85 | 75d62a58 | j_mayer | float32 uint32_to_float32(unsigned int v STATUS_PARAM) |
86 | 75d62a58 | j_mayer | { |
87 | 75d62a58 | j_mayer | return (float32)v;
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88 | 75d62a58 | j_mayer | } |
89 | 75d62a58 | j_mayer | |
90 | 158142c2 | bellard | float64 int32_to_float64(int v STATUS_PARAM)
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91 | 158142c2 | bellard | { |
92 | 158142c2 | bellard | return (float64)v;
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93 | 158142c2 | bellard | } |
94 | 158142c2 | bellard | |
95 | 75d62a58 | j_mayer | float64 uint32_to_float64(unsigned int v STATUS_PARAM) |
96 | 75d62a58 | j_mayer | { |
97 | 75d62a58 | j_mayer | return (float64)v;
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98 | 75d62a58 | j_mayer | } |
99 | 75d62a58 | j_mayer | |
100 | 158142c2 | bellard | #ifdef FLOATX80
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101 | 158142c2 | bellard | floatx80 int32_to_floatx80(int v STATUS_PARAM)
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102 | 158142c2 | bellard | { |
103 | 158142c2 | bellard | return (floatx80)v;
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104 | 158142c2 | bellard | } |
105 | 158142c2 | bellard | #endif
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106 | 158142c2 | bellard | float32 int64_to_float32( int64_t v STATUS_PARAM) |
107 | 158142c2 | bellard | { |
108 | 158142c2 | bellard | return (float32)v;
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109 | 158142c2 | bellard | } |
110 | 75d62a58 | j_mayer | float32 uint64_to_float32( uint64_t v STATUS_PARAM) |
111 | 75d62a58 | j_mayer | { |
112 | 75d62a58 | j_mayer | return (float32)v;
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113 | 75d62a58 | j_mayer | } |
114 | 158142c2 | bellard | float64 int64_to_float64( int64_t v STATUS_PARAM) |
115 | 158142c2 | bellard | { |
116 | 158142c2 | bellard | return (float64)v;
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117 | 158142c2 | bellard | } |
118 | 75d62a58 | j_mayer | float64 uint64_to_float64( uint64_t v STATUS_PARAM) |
119 | 75d62a58 | j_mayer | { |
120 | 75d62a58 | j_mayer | return (float64)v;
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121 | 75d62a58 | j_mayer | } |
122 | 158142c2 | bellard | #ifdef FLOATX80
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123 | 158142c2 | bellard | floatx80 int64_to_floatx80( int64_t v STATUS_PARAM) |
124 | 158142c2 | bellard | { |
125 | 158142c2 | bellard | return (floatx80)v;
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126 | 158142c2 | bellard | } |
127 | 158142c2 | bellard | #endif
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128 | 158142c2 | bellard | |
129 | 1b2b0af5 | bellard | /* XXX: this code implements the x86 behaviour, not the IEEE one. */
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130 | 1b2b0af5 | bellard | #if HOST_LONG_BITS == 32 |
131 | 1b2b0af5 | bellard | static inline int long_to_int32(long a) |
132 | 1b2b0af5 | bellard | { |
133 | 1b2b0af5 | bellard | return a;
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134 | 1b2b0af5 | bellard | } |
135 | 1b2b0af5 | bellard | #else
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136 | 1b2b0af5 | bellard | static inline int long_to_int32(long a) |
137 | 1b2b0af5 | bellard | { |
138 | 5fafdf24 | ths | if (a != (int32_t)a)
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139 | 1b2b0af5 | bellard | a = 0x80000000;
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140 | 1b2b0af5 | bellard | return a;
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141 | 1b2b0af5 | bellard | } |
142 | 1b2b0af5 | bellard | #endif
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143 | 1b2b0af5 | bellard | |
144 | 158142c2 | bellard | /*----------------------------------------------------------------------------
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145 | 158142c2 | bellard | | Software IEC/IEEE single-precision conversion routines.
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146 | 158142c2 | bellard | *----------------------------------------------------------------------------*/
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147 | 158142c2 | bellard | int float32_to_int32( float32 a STATUS_PARAM)
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148 | 158142c2 | bellard | { |
149 | 1b2b0af5 | bellard | return long_to_int32(lrintf(a));
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150 | 158142c2 | bellard | } |
151 | 158142c2 | bellard | int float32_to_int32_round_to_zero( float32 a STATUS_PARAM)
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152 | 158142c2 | bellard | { |
153 | 158142c2 | bellard | return (int)a; |
154 | 158142c2 | bellard | } |
155 | 158142c2 | bellard | int64_t float32_to_int64( float32 a STATUS_PARAM) |
156 | 158142c2 | bellard | { |
157 | 158142c2 | bellard | return llrintf(a);
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158 | 158142c2 | bellard | } |
159 | 158142c2 | bellard | |
160 | 158142c2 | bellard | int64_t float32_to_int64_round_to_zero( float32 a STATUS_PARAM) |
161 | 158142c2 | bellard | { |
162 | 158142c2 | bellard | return (int64_t)a;
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163 | 158142c2 | bellard | } |
164 | 158142c2 | bellard | |
165 | 158142c2 | bellard | float64 float32_to_float64( float32 a STATUS_PARAM) |
166 | 158142c2 | bellard | { |
167 | 158142c2 | bellard | return a;
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168 | 158142c2 | bellard | } |
169 | 158142c2 | bellard | #ifdef FLOATX80
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170 | 158142c2 | bellard | floatx80 float32_to_floatx80( float32 a STATUS_PARAM) |
171 | 158142c2 | bellard | { |
172 | 158142c2 | bellard | return a;
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173 | 158142c2 | bellard | } |
174 | 158142c2 | bellard | #endif
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175 | 158142c2 | bellard | |
176 | 75d62a58 | j_mayer | unsigned int float32_to_uint32( float32 a STATUS_PARAM) |
177 | 75d62a58 | j_mayer | { |
178 | 75d62a58 | j_mayer | int64_t v; |
179 | 75d62a58 | j_mayer | unsigned int res; |
180 | 75d62a58 | j_mayer | |
181 | 75d62a58 | j_mayer | v = llrintf(a); |
182 | 75d62a58 | j_mayer | if (v < 0) { |
183 | 75d62a58 | j_mayer | res = 0;
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184 | 75d62a58 | j_mayer | } else if (v > 0xffffffff) { |
185 | 75d62a58 | j_mayer | res = 0xffffffff;
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186 | 75d62a58 | j_mayer | } else {
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187 | 75d62a58 | j_mayer | res = v; |
188 | 75d62a58 | j_mayer | } |
189 | 75d62a58 | j_mayer | return res;
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190 | 75d62a58 | j_mayer | } |
191 | 75d62a58 | j_mayer | unsigned int float32_to_uint32_round_to_zero( float32 a STATUS_PARAM) |
192 | 75d62a58 | j_mayer | { |
193 | 75d62a58 | j_mayer | int64_t v; |
194 | 75d62a58 | j_mayer | unsigned int res; |
195 | 75d62a58 | j_mayer | |
196 | 75d62a58 | j_mayer | v = (int64_t)a; |
197 | 75d62a58 | j_mayer | if (v < 0) { |
198 | 75d62a58 | j_mayer | res = 0;
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199 | 75d62a58 | j_mayer | } else if (v > 0xffffffff) { |
200 | 75d62a58 | j_mayer | res = 0xffffffff;
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201 | 75d62a58 | j_mayer | } else {
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202 | 75d62a58 | j_mayer | res = v; |
203 | 75d62a58 | j_mayer | } |
204 | 75d62a58 | j_mayer | return res;
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205 | 75d62a58 | j_mayer | } |
206 | 75d62a58 | j_mayer | |
207 | 158142c2 | bellard | /*----------------------------------------------------------------------------
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208 | 158142c2 | bellard | | Software IEC/IEEE single-precision operations.
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209 | 158142c2 | bellard | *----------------------------------------------------------------------------*/
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210 | 158142c2 | bellard | float32 float32_round_to_int( float32 a STATUS_PARAM) |
211 | 158142c2 | bellard | { |
212 | 158142c2 | bellard | return rintf(a);
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213 | 158142c2 | bellard | } |
214 | 158142c2 | bellard | |
215 | b109f9f8 | bellard | float32 float32_rem( float32 a, float32 b STATUS_PARAM) |
216 | b109f9f8 | bellard | { |
217 | b109f9f8 | bellard | return remainderf(a, b);
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218 | b109f9f8 | bellard | } |
219 | b109f9f8 | bellard | |
220 | 158142c2 | bellard | float32 float32_sqrt( float32 a STATUS_PARAM) |
221 | 158142c2 | bellard | { |
222 | 158142c2 | bellard | return sqrtf(a);
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223 | 158142c2 | bellard | } |
224 | 750afe93 | bellard | int float32_compare( float32 a, float32 b STATUS_PARAM )
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225 | b109f9f8 | bellard | { |
226 | b109f9f8 | bellard | if (a < b) {
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227 | 30e7a22e | aurel32 | return float_relation_less;
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228 | b109f9f8 | bellard | } else if (a == b) { |
229 | 30e7a22e | aurel32 | return float_relation_equal;
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230 | b109f9f8 | bellard | } else if (a > b) { |
231 | 30e7a22e | aurel32 | return float_relation_greater;
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232 | b109f9f8 | bellard | } else {
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233 | 30e7a22e | aurel32 | return float_relation_unordered;
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234 | b109f9f8 | bellard | } |
235 | b109f9f8 | bellard | } |
236 | 750afe93 | bellard | int float32_compare_quiet( float32 a, float32 b STATUS_PARAM )
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237 | b109f9f8 | bellard | { |
238 | b109f9f8 | bellard | if (isless(a, b)) {
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239 | 30e7a22e | aurel32 | return float_relation_less;
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240 | b109f9f8 | bellard | } else if (a == b) { |
241 | 30e7a22e | aurel32 | return float_relation_equal;
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242 | b109f9f8 | bellard | } else if (isgreater(a, b)) { |
243 | 30e7a22e | aurel32 | return float_relation_greater;
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244 | b109f9f8 | bellard | } else {
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245 | 30e7a22e | aurel32 | return float_relation_unordered;
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246 | b109f9f8 | bellard | } |
247 | b109f9f8 | bellard | } |
248 | 750afe93 | bellard | int float32_is_signaling_nan( float32 a1)
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249 | 158142c2 | bellard | { |
250 | 158142c2 | bellard | float32u u; |
251 | 158142c2 | bellard | uint32_t a; |
252 | 158142c2 | bellard | u.f = a1; |
253 | 158142c2 | bellard | a = u.i; |
254 | 158142c2 | bellard | return ( ( ( a>>22 ) & 0x1FF ) == 0x1FE ) && ( a & 0x003FFFFF ); |
255 | 158142c2 | bellard | } |
256 | 158142c2 | bellard | |
257 | 629bd74a | aurel32 | int float32_is_nan( float32 a1 )
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258 | 629bd74a | aurel32 | { |
259 | 629bd74a | aurel32 | float32u u; |
260 | 629bd74a | aurel32 | uint64_t a; |
261 | 629bd74a | aurel32 | u.f = a1; |
262 | 629bd74a | aurel32 | a = u.i; |
263 | 629bd74a | aurel32 | return ( 0xFF800000 < ( a<<1 ) ); |
264 | 629bd74a | aurel32 | } |
265 | 629bd74a | aurel32 | |
266 | 158142c2 | bellard | /*----------------------------------------------------------------------------
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267 | 158142c2 | bellard | | Software IEC/IEEE double-precision conversion routines.
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268 | 158142c2 | bellard | *----------------------------------------------------------------------------*/
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269 | 158142c2 | bellard | int float64_to_int32( float64 a STATUS_PARAM)
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270 | 158142c2 | bellard | { |
271 | 1b2b0af5 | bellard | return long_to_int32(lrint(a));
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272 | 158142c2 | bellard | } |
273 | 158142c2 | bellard | int float64_to_int32_round_to_zero( float64 a STATUS_PARAM)
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274 | 158142c2 | bellard | { |
275 | 158142c2 | bellard | return (int)a; |
276 | 158142c2 | bellard | } |
277 | 158142c2 | bellard | int64_t float64_to_int64( float64 a STATUS_PARAM) |
278 | 158142c2 | bellard | { |
279 | 158142c2 | bellard | return llrint(a);
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280 | 158142c2 | bellard | } |
281 | 158142c2 | bellard | int64_t float64_to_int64_round_to_zero( float64 a STATUS_PARAM) |
282 | 158142c2 | bellard | { |
283 | 158142c2 | bellard | return (int64_t)a;
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284 | 158142c2 | bellard | } |
285 | 158142c2 | bellard | float32 float64_to_float32( float64 a STATUS_PARAM) |
286 | 158142c2 | bellard | { |
287 | 158142c2 | bellard | return a;
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288 | 158142c2 | bellard | } |
289 | 158142c2 | bellard | #ifdef FLOATX80
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290 | 158142c2 | bellard | floatx80 float64_to_floatx80( float64 a STATUS_PARAM) |
291 | 158142c2 | bellard | { |
292 | 158142c2 | bellard | return a;
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293 | 158142c2 | bellard | } |
294 | 158142c2 | bellard | #endif
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295 | 158142c2 | bellard | #ifdef FLOAT128
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296 | 158142c2 | bellard | float128 float64_to_float128( float64 a STATUS_PARAM) |
297 | 158142c2 | bellard | { |
298 | 158142c2 | bellard | return a;
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299 | 158142c2 | bellard | } |
300 | 158142c2 | bellard | #endif
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301 | 158142c2 | bellard | |
302 | 75d62a58 | j_mayer | unsigned int float64_to_uint32( float64 a STATUS_PARAM) |
303 | 75d62a58 | j_mayer | { |
304 | 75d62a58 | j_mayer | int64_t v; |
305 | 75d62a58 | j_mayer | unsigned int res; |
306 | 75d62a58 | j_mayer | |
307 | 75d62a58 | j_mayer | v = llrint(a); |
308 | 75d62a58 | j_mayer | if (v < 0) { |
309 | 75d62a58 | j_mayer | res = 0;
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310 | 75d62a58 | j_mayer | } else if (v > 0xffffffff) { |
311 | 75d62a58 | j_mayer | res = 0xffffffff;
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312 | 75d62a58 | j_mayer | } else {
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313 | 75d62a58 | j_mayer | res = v; |
314 | 75d62a58 | j_mayer | } |
315 | 75d62a58 | j_mayer | return res;
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316 | 75d62a58 | j_mayer | } |
317 | 75d62a58 | j_mayer | unsigned int float64_to_uint32_round_to_zero( float64 a STATUS_PARAM) |
318 | 75d62a58 | j_mayer | { |
319 | 75d62a58 | j_mayer | int64_t v; |
320 | 75d62a58 | j_mayer | unsigned int res; |
321 | 75d62a58 | j_mayer | |
322 | 75d62a58 | j_mayer | v = (int64_t)a; |
323 | 75d62a58 | j_mayer | if (v < 0) { |
324 | 75d62a58 | j_mayer | res = 0;
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325 | 75d62a58 | j_mayer | } else if (v > 0xffffffff) { |
326 | 75d62a58 | j_mayer | res = 0xffffffff;
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327 | 75d62a58 | j_mayer | } else {
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328 | 75d62a58 | j_mayer | res = v; |
329 | 75d62a58 | j_mayer | } |
330 | 75d62a58 | j_mayer | return res;
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331 | 75d62a58 | j_mayer | } |
332 | 75d62a58 | j_mayer | uint64_t float64_to_uint64 (float64 a STATUS_PARAM) |
333 | 75d62a58 | j_mayer | { |
334 | 75d62a58 | j_mayer | int64_t v; |
335 | 75d62a58 | j_mayer | |
336 | 75d62a58 | j_mayer | v = llrint(a + (float64)INT64_MIN); |
337 | 75d62a58 | j_mayer | |
338 | 75d62a58 | j_mayer | return v - INT64_MIN;
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339 | 75d62a58 | j_mayer | } |
340 | 75d62a58 | j_mayer | uint64_t float64_to_uint64_round_to_zero (float64 a STATUS_PARAM) |
341 | 75d62a58 | j_mayer | { |
342 | 75d62a58 | j_mayer | int64_t v; |
343 | 75d62a58 | j_mayer | |
344 | 75d62a58 | j_mayer | v = (int64_t)(a + (float64)INT64_MIN); |
345 | 75d62a58 | j_mayer | |
346 | 75d62a58 | j_mayer | return v - INT64_MIN;
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347 | 75d62a58 | j_mayer | } |
348 | 75d62a58 | j_mayer | |
349 | 158142c2 | bellard | /*----------------------------------------------------------------------------
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350 | 158142c2 | bellard | | Software IEC/IEEE double-precision operations.
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351 | 158142c2 | bellard | *----------------------------------------------------------------------------*/
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352 | fc81ba53 | ths | #if defined(__sun__) && defined(HOST_SOLARIS) && HOST_SOLARIS < 10 |
353 | 63a654bb | ths | static inline float64 trunc(float64 x) |
354 | 63a654bb | ths | { |
355 | 63a654bb | ths | return x < 0 ? -floor(-x) : floor(x); |
356 | 63a654bb | ths | } |
357 | 63a654bb | ths | #endif
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358 | e6e5906b | pbrook | float64 float64_trunc_to_int( float64 a STATUS_PARAM ) |
359 | e6e5906b | pbrook | { |
360 | e6e5906b | pbrook | return trunc(a);
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361 | e6e5906b | pbrook | } |
362 | e6e5906b | pbrook | |
363 | 158142c2 | bellard | float64 float64_round_to_int( float64 a STATUS_PARAM ) |
364 | 158142c2 | bellard | { |
365 | 158142c2 | bellard | #if defined(__arm__)
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366 | 158142c2 | bellard | switch(STATUS(float_rounding_mode)) {
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367 | 158142c2 | bellard | default:
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368 | 158142c2 | bellard | case float_round_nearest_even:
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369 | 158142c2 | bellard | asm("rndd %0, %1" : "=f" (a) : "f"(a)); |
370 | 158142c2 | bellard | break;
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371 | 158142c2 | bellard | case float_round_down:
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372 | 158142c2 | bellard | asm("rnddm %0, %1" : "=f" (a) : "f"(a)); |
373 | 158142c2 | bellard | break;
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374 | 158142c2 | bellard | case float_round_up:
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375 | 158142c2 | bellard | asm("rnddp %0, %1" : "=f" (a) : "f"(a)); |
376 | 158142c2 | bellard | break;
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377 | 158142c2 | bellard | case float_round_to_zero:
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378 | 158142c2 | bellard | asm("rnddz %0, %1" : "=f" (a) : "f"(a)); |
379 | 158142c2 | bellard | break;
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380 | 158142c2 | bellard | } |
381 | 158142c2 | bellard | #else
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382 | 158142c2 | bellard | return rint(a);
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383 | 158142c2 | bellard | #endif
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384 | 158142c2 | bellard | } |
385 | 158142c2 | bellard | |
386 | b109f9f8 | bellard | float64 float64_rem( float64 a, float64 b STATUS_PARAM) |
387 | b109f9f8 | bellard | { |
388 | b109f9f8 | bellard | return remainder(a, b);
|
389 | b109f9f8 | bellard | } |
390 | b109f9f8 | bellard | |
391 | 158142c2 | bellard | float64 float64_sqrt( float64 a STATUS_PARAM) |
392 | 158142c2 | bellard | { |
393 | 158142c2 | bellard | return sqrt(a);
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394 | 158142c2 | bellard | } |
395 | 750afe93 | bellard | int float64_compare( float64 a, float64 b STATUS_PARAM )
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396 | b109f9f8 | bellard | { |
397 | b109f9f8 | bellard | if (a < b) {
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398 | 30e7a22e | aurel32 | return float_relation_less;
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399 | b109f9f8 | bellard | } else if (a == b) { |
400 | 30e7a22e | aurel32 | return float_relation_equal;
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401 | b109f9f8 | bellard | } else if (a > b) { |
402 | 30e7a22e | aurel32 | return float_relation_greater;
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403 | b109f9f8 | bellard | } else {
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404 | 30e7a22e | aurel32 | return float_relation_unordered;
|
405 | b109f9f8 | bellard | } |
406 | b109f9f8 | bellard | } |
407 | 750afe93 | bellard | int float64_compare_quiet( float64 a, float64 b STATUS_PARAM )
|
408 | b109f9f8 | bellard | { |
409 | b109f9f8 | bellard | if (isless(a, b)) {
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410 | 30e7a22e | aurel32 | return float_relation_less;
|
411 | b109f9f8 | bellard | } else if (a == b) { |
412 | 30e7a22e | aurel32 | return float_relation_equal;
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413 | b109f9f8 | bellard | } else if (isgreater(a, b)) { |
414 | 30e7a22e | aurel32 | return float_relation_greater;
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415 | b109f9f8 | bellard | } else {
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416 | 30e7a22e | aurel32 | return float_relation_unordered;
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417 | b109f9f8 | bellard | } |
418 | b109f9f8 | bellard | } |
419 | 750afe93 | bellard | int float64_is_signaling_nan( float64 a1)
|
420 | 158142c2 | bellard | { |
421 | 158142c2 | bellard | float64u u; |
422 | 158142c2 | bellard | uint64_t a; |
423 | 158142c2 | bellard | u.f = a1; |
424 | 158142c2 | bellard | a = u.i; |
425 | 158142c2 | bellard | return
|
426 | 158142c2 | bellard | ( ( ( a>>51 ) & 0xFFF ) == 0xFFE ) |
427 | 158142c2 | bellard | && ( a & LIT64( 0x0007FFFFFFFFFFFF ) );
|
428 | 158142c2 | bellard | |
429 | 158142c2 | bellard | } |
430 | 158142c2 | bellard | |
431 | 750afe93 | bellard | int float64_is_nan( float64 a1 )
|
432 | e6e5906b | pbrook | { |
433 | e6e5906b | pbrook | float64u u; |
434 | e6e5906b | pbrook | uint64_t a; |
435 | e6e5906b | pbrook | u.f = a1; |
436 | e6e5906b | pbrook | a = u.i; |
437 | e6e5906b | pbrook | |
438 | 1b2ad2ec | aurel32 | return ( LIT64( 0xFFF0000000000000 ) < (bits64) ( a<<1 ) ); |
439 | e6e5906b | pbrook | |
440 | e6e5906b | pbrook | } |
441 | e6e5906b | pbrook | |
442 | 158142c2 | bellard | #ifdef FLOATX80
|
443 | 158142c2 | bellard | |
444 | 158142c2 | bellard | /*----------------------------------------------------------------------------
|
445 | 158142c2 | bellard | | Software IEC/IEEE extended double-precision conversion routines.
|
446 | 158142c2 | bellard | *----------------------------------------------------------------------------*/
|
447 | 158142c2 | bellard | int floatx80_to_int32( floatx80 a STATUS_PARAM)
|
448 | 158142c2 | bellard | { |
449 | 1b2b0af5 | bellard | return long_to_int32(lrintl(a));
|
450 | 158142c2 | bellard | } |
451 | 158142c2 | bellard | int floatx80_to_int32_round_to_zero( floatx80 a STATUS_PARAM)
|
452 | 158142c2 | bellard | { |
453 | 158142c2 | bellard | return (int)a; |
454 | 158142c2 | bellard | } |
455 | 158142c2 | bellard | int64_t floatx80_to_int64( floatx80 a STATUS_PARAM) |
456 | 158142c2 | bellard | { |
457 | 158142c2 | bellard | return llrintl(a);
|
458 | 158142c2 | bellard | } |
459 | 158142c2 | bellard | int64_t floatx80_to_int64_round_to_zero( floatx80 a STATUS_PARAM) |
460 | 158142c2 | bellard | { |
461 | 158142c2 | bellard | return (int64_t)a;
|
462 | 158142c2 | bellard | } |
463 | 158142c2 | bellard | float32 floatx80_to_float32( floatx80 a STATUS_PARAM) |
464 | 158142c2 | bellard | { |
465 | 158142c2 | bellard | return a;
|
466 | 158142c2 | bellard | } |
467 | 158142c2 | bellard | float64 floatx80_to_float64( floatx80 a STATUS_PARAM) |
468 | 158142c2 | bellard | { |
469 | 158142c2 | bellard | return a;
|
470 | 158142c2 | bellard | } |
471 | 158142c2 | bellard | |
472 | 158142c2 | bellard | /*----------------------------------------------------------------------------
|
473 | 158142c2 | bellard | | Software IEC/IEEE extended double-precision operations.
|
474 | 158142c2 | bellard | *----------------------------------------------------------------------------*/
|
475 | 158142c2 | bellard | floatx80 floatx80_round_to_int( floatx80 a STATUS_PARAM) |
476 | 158142c2 | bellard | { |
477 | 158142c2 | bellard | return rintl(a);
|
478 | 158142c2 | bellard | } |
479 | b109f9f8 | bellard | floatx80 floatx80_rem( floatx80 a, floatx80 b STATUS_PARAM) |
480 | b109f9f8 | bellard | { |
481 | b109f9f8 | bellard | return remainderl(a, b);
|
482 | b109f9f8 | bellard | } |
483 | 158142c2 | bellard | floatx80 floatx80_sqrt( floatx80 a STATUS_PARAM) |
484 | 158142c2 | bellard | { |
485 | 158142c2 | bellard | return sqrtl(a);
|
486 | 158142c2 | bellard | } |
487 | 750afe93 | bellard | int floatx80_compare( floatx80 a, floatx80 b STATUS_PARAM )
|
488 | b109f9f8 | bellard | { |
489 | b109f9f8 | bellard | if (a < b) {
|
490 | 30e7a22e | aurel32 | return float_relation_less;
|
491 | b109f9f8 | bellard | } else if (a == b) { |
492 | 30e7a22e | aurel32 | return float_relation_equal;
|
493 | b109f9f8 | bellard | } else if (a > b) { |
494 | 30e7a22e | aurel32 | return float_relation_greater;
|
495 | b109f9f8 | bellard | } else {
|
496 | 30e7a22e | aurel32 | return float_relation_unordered;
|
497 | b109f9f8 | bellard | } |
498 | b109f9f8 | bellard | } |
499 | 750afe93 | bellard | int floatx80_compare_quiet( floatx80 a, floatx80 b STATUS_PARAM )
|
500 | b109f9f8 | bellard | { |
501 | b109f9f8 | bellard | if (isless(a, b)) {
|
502 | 30e7a22e | aurel32 | return float_relation_less;
|
503 | b109f9f8 | bellard | } else if (a == b) { |
504 | 30e7a22e | aurel32 | return float_relation_equal;
|
505 | b109f9f8 | bellard | } else if (isgreater(a, b)) { |
506 | 30e7a22e | aurel32 | return float_relation_greater;
|
507 | b109f9f8 | bellard | } else {
|
508 | 30e7a22e | aurel32 | return float_relation_unordered;
|
509 | b109f9f8 | bellard | } |
510 | b109f9f8 | bellard | } |
511 | 750afe93 | bellard | int floatx80_is_signaling_nan( floatx80 a1)
|
512 | 158142c2 | bellard | { |
513 | 158142c2 | bellard | floatx80u u; |
514 | 1b2ad2ec | aurel32 | uint64_t aLow; |
515 | 1b2ad2ec | aurel32 | u.f = a1; |
516 | 1b2ad2ec | aurel32 | |
517 | 1b2ad2ec | aurel32 | aLow = u.i.low & ~ LIT64( 0x4000000000000000 );
|
518 | 1b2ad2ec | aurel32 | return
|
519 | 1b2ad2ec | aurel32 | ( ( u.i.high & 0x7FFF ) == 0x7FFF ) |
520 | 1b2ad2ec | aurel32 | && (bits64) ( aLow<<1 )
|
521 | 1b2ad2ec | aurel32 | && ( u.i.low == aLow ); |
522 | 1b2ad2ec | aurel32 | } |
523 | 1b2ad2ec | aurel32 | |
524 | 1b2ad2ec | aurel32 | int floatx80_is_nan( floatx80 a1 )
|
525 | 1b2ad2ec | aurel32 | { |
526 | 1b2ad2ec | aurel32 | floatx80u u; |
527 | 158142c2 | bellard | u.f = a1; |
528 | 158142c2 | bellard | return ( ( u.i.high & 0x7FFF ) == 0x7FFF ) && (bits64) ( u.i.low<<1 ); |
529 | 158142c2 | bellard | } |
530 | 158142c2 | bellard | |
531 | 158142c2 | bellard | #endif |