Changeset 9adb61d in mainline for uspace/lib/math/generic/exp.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/exp.c (modified) (7 diffs)

uspace/lib/math/generic/exp.c

@@ -49 +49 @@
 };
 
-/** Exponential approximation by Taylor series (32-))
+/** Exponential approximation by Taylor series (32-bit floating point)
  *
  * Compute the approximation of exponential by a Taylor
@@ -61 +61 @@
  *
  */
-static float64_t taylor_exp_32(float64_t arg)
+static float32_t taylor_exp_32(float32_t arg)
 {
-        float64_t ret = 1;
-        float64_t nom = 1;
+        float32_t ret = 1;
+        float32_t nom = 1;
         
         for (unsigned int i = 0; i < TAYLOR_DEGREE_32; i++) {
@@ -74 +74 @@
 }
 
-/** Exponential approximation by Taylor series
+/** Exponential approximation by Taylor series (64-bit floating point)
  *
  * Compute the approximation of exponential by a Taylor
@@ -99 +99 @@
 }
 
-/** Single precision exponential
+/** Exponential (32-bit floating point)
  *
  * Compute exponential value.
@@ -121 +121 @@
          */
 
-        i = float32_trunc(arg * M_LOG2E);
+        i = trunc_f32(arg * M_LOG2E);
         f = arg * M_LOG2E - i;
 
@@ -129 +129 @@
 }
 
-/** Double precision exponential
+/** Exponential (64-bit floating point)
  *
  * Compute exponential value.
@@ -151 +151 @@
          */
 
-        i = float64_trunc(arg * M_LOG2E);
+        i = trunc_f64(arg * M_LOG2E);
         f = arg * M_LOG2E - i;