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authorbnewbold <bnewbold@robocracy.org>2010-03-31 08:52:45 +0800
committeriperry <iperry@gmail.com>2010-03-31 09:43:10 +0800
commit1d3861ef93f8423176c6010ab606abdab00a7cbd (patch)
tree5c95101e295bcfdd7f9f4292ce9204ddf7e7f662 /core/wiring_math.cpp
parent8d6bf3b196c2a0bc1adda4a04669e54fdc5b65cb (diff)
downloadlibrambutan-1d3861ef93f8423176c6010ab606abdab00a7cbd.tar.gz
librambutan-1d3861ef93f8423176c6010ab606abdab00a7cbd.zip
Major hierarchy reorganization; see README.
copy-to-ide and Makefile updated to conform; .gitignore added; LICENSE added
Diffstat (limited to 'core/wiring_math.cpp')
-rw-r--r--core/wiring_math.cpp38
1 files changed, 38 insertions, 0 deletions
diff --git a/core/wiring_math.cpp b/core/wiring_math.cpp
new file mode 100644
index 0000000..9be7dc3
--- /dev/null
+++ b/core/wiring_math.cpp
@@ -0,0 +1,38 @@
+#include <stdlib.h>
+#include "math.h"
+
+/* from newlib:
+ *
+ * rand returns the next pseudo-random integer in sequence; it is a number
+ * between 0 and RAND_MAX (inclusive).
+ *
+ * srand does not return a result. */
+
+
+/* The rest copied from WMath.cpp */
+void randomSeed(unsigned int seed) {
+ if (seed != 0) {
+ srand(seed);
+ }
+}
+
+long random(long howbig) {
+ if (howbig == 0) {
+ return 0;
+ }
+ return rand() % howbig;
+}
+
+long random(long howsmall, long howbig) {
+ if (howsmall >= howbig) {
+ return howsmall;
+ }
+ long diff = howbig - howsmall;
+ return random(diff) + howsmall;
+}
+
+long map(long x, long in_min, long in_max, long out_min, long out_max) {
+ return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
+}
+
+