Changeset c0c38c7c in mainline for uspace/lib/softfloat/sub.c

Timestamp:

2015-03-14T21:36:44Z (9 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

7f9d97f3

Parents:

2c7fdaa

Message:

software floating point overhaul
use proper type mapping
fix cosine calculation

File:

• uspace/lib/softfloat/sub.c (modified) (2 diffs)

uspace/lib/softfloat/sub.c

@@ -34 +34 @@
  */
 
-#include "sftypes.h"
 #include "sub.h"
 #include "comparison.h"
 #include "common.h"
+#include "add.h"
 
 /** Subtract two single-precision floats with the same sign.
@@ -438 +438 @@
 }
 
+#ifdef float32_t
+
+float32_t __subsf3(float32_t a, float32_t b)
+{
+        float32_u ua;
+        ua.val = a;
+        
+        float32_u ub;
+        ub.val = b;
+        
+        float32_u res;
+        
+        if (ua.data.parts.sign != ub.data.parts.sign) {
+                ub.data.parts.sign = !ub.data.parts.sign;
+                res.data = add_float32(ua.data, ub.data);
+        } else
+                res.data = sub_float32(ua.data, ub.data);
+        
+        return res.val;
+}
+
+float32_t __aeabi_fsub(float32_t a, float32_t b)
+{
+        float32_u ua;
+        ua.val = a;
+        
+        float32_u ub;
+        ub.val = b;
+        
+        float32_u res;
+        
+        if (ua.data.parts.sign != ub.data.parts.sign) {
+                ub.data.parts.sign = !ub.data.parts.sign;
+                res.data = add_float32(ua.data, ub.data);
+        } else
+                res.data = sub_float32(ua.data, ub.data);
+        
+        return res.val;
+}
+
+#endif
+
+#ifdef float64_t
+
+float64_t __subdf3(float64_t a, float64_t b)
+{
+        float64_u ua;
+        ua.val = a;
+        
+        float64_u ub;
+        ub.val = b;
+        
+        float64_u res;
+        
+        if (ua.data.parts.sign != ub.data.parts.sign) {
+                ub.data.parts.sign = !ub.data.parts.sign;
+                res.data = add_float64(ua.data, ub.data);
+        } else
+                res.data = sub_float64(ua.data, ub.data);
+        
+        return res.val;
+}
+
+float64_t __aeabi_dsub(float64_t a, float64_t b)
+{
+        float64_u ua;
+        ua.val = a;
+        
+        float64_u ub;
+        ub.val = b;
+        
+        float64_u res;
+        
+        if (ua.data.parts.sign != ub.data.parts.sign) {
+                ub.data.parts.sign = !ub.data.parts.sign;
+                res.data = add_float64(ua.data, ub.data);
+        } else
+                res.data = sub_float64(ua.data, ub.data);
+        
+        return res.val;
+}
+
+#endif
+
+#ifdef float128_t
+
+float128_t __subtf3(float128_t a, float128_t b)
+{
+        float128_u ua;
+        ua.val = a;
+        
+        float128_u ub;
+        ub.val = b;
+        
+        float128_u res;
+        
+        if (ua.data.parts.sign != ub.data.parts.sign) {
+                ub.data.parts.sign = !ub.data.parts.sign;
+                res.data = add_float128(ua.data, ub.data);
+        } else
+                res.data = sub_float128(ua.data, ub.data);
+        
+        return res.val;
+}
+
+void _Qp_sub(float128_t *c, float128_t *a, float128_t *b)
+{
+        *c = __subtf3(*a, *b);
+}
+
+#endif
+
 /** @}
  */