Changeset 9adb61d in mainline for uspace/lib/math/generic/floor.c

Timestamp:

2015-09-05T11:50:00Z (10 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

996dc042, ba8eecf

Parents:

e6f5766

Message:

Add single-precision variant for all functions. Allow generic implementations to call other functions while selecting the number of bits of precision, but not the implementation (generic or arch-specific).

File:

• uspace/lib/math/generic/floor.c (modified) (2 diffs)

uspace/lib/math/generic/floor.c

@@ -34 +34 @@
 
 #include <floor.h>
+#include <math.h>
 #include <mathtypes.h>
-#include <trunc.h>
 
-/** Ceiling (round towards negative infinity)
+/** Ceiling (round towards negative infinity, 32-bit floating point)
+ *
+ * @param val Floating point number.
+ *
+ * @return Number rounded towards negative infinity.
+ */
+
+float32_t float32_floor(float32_t val)
+{
+        float32_t t;
+        float32_u v;
+        
+        v.val = val;
+        t = trunc_f32(val);
+        
+        if (v.data.parts.sign == 0 || val == t)
+                return t;
+        else
+                return t - 1.0;
+}
+
+/** Ceiling (round towards negative infinity, 64-bit floating point)
  *
  * @param val Floating point number.
@@ -50 +71 @@
         
         v.val = val;
-        t = float64_trunc(val);
+        t = trunc_f64(val);
         
         if (v.data.parts.sign == 0 || val == t)