Changeset 6b8b767 for src/libcfa/math

Timestamp:

Jul 13, 2018, 6:35:06 PM (6 years ago)

Author:

Peter A. Buhr <pabuhr@…>

Branches:

ADT, aaron-thesis, arm-eh, ast-experimental, cleanup-dtors, deferred_resn, demangler, enum, forall-pointer-decay, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, no_list, persistent-indexer, pthread-emulation, qualifiedEnum

Children:

0a73148

Parents:

dffaeac

Message:

add math routines lerp, step, smoothstep

File:

• src/libcfa/math (modified) (2 diffs)

src/libcfa/math

@@ -10 +10 @@
 // Created On       : Mon Apr 18 23:37:04 2016
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Wed Jul 11 21:12:54 2018
-// Update Count     : 109
+// Last Modified On : Fri Jul 13 11:02:15 2018
+// Update Count     : 116
 //
 
@@ -352 +352 @@
 #include "common"
 
+//---------------------------------------
+
+forall( otype T | { void ?{}( T &, one_t ); T ?+?( T, T ); T ?-?( T, T );T ?*?( T, T ); } )
+T lerp( T x, T y, T a ) { return x * ((T){1} - a) + y * a; }
+
+forall( otype T | { void ?{}( T &, zero_t ); void ?{}( T &, one_t ); int ?<?( T, T ); } )
+T step( T edge, T x ) { return x < edge ? (T){0} : (T){1}; }
+
+forall( otype T | { void ?{}( T &, int ); T clamp( T, T, T ); T ?-?( T, T ); T ?*?( T, T ); T ?/?( T, T ); } )
+T smoothstep( T edge0, T edge1, T x ) { T t = clamp( (x - edge0) / (edge1 - edge0), (T){0}, (T){1} ); return t * t * ((T){3} - (T){2} * t); }
+
 // Local Variables: //
 // mode: c //