From 1d3861ef93f8423176c6010ab606abdab00a7cbd Mon Sep 17 00:00:00 2001 From: bnewbold Date: Wed, 31 Mar 2010 08:52:45 +0800 Subject: Major hierarchy reorganization; see README. copy-to-ide and Makefile updated to conform; .gitignore added; LICENSE added --- core/wiring_math.cpp | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 core/wiring_math.cpp (limited to 'core/wiring_math.cpp') 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 +#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; +} + + -- cgit v1.2.3