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Use libm in asteroids.

This commit is contained in:
Jonas 'Sortie' Termansen 2013-01-16 16:49:31 +01:00
parent 5980be9b3c
commit c12c429c3e
1 changed files with 3 additions and 16 deletions
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19
games/asteroids.cpp
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@ -32,24 +32,12 @@
#include <fcntl.h>
#include <errno.h>
#include <error.h>
#include <math.h>
#include <time.h>
#include <timespec.h>
#include <dispd.h>
// TODO: Hacks that should belong in libm or something.
extern "C" float sqrtf(float x)
{
float ret;
asm ("fsqrt" : "=t" (ret) : "0" (x));
return ret;
}
extern "C" void sincosf(float x, float* sinval, float* cosval)
{
asm ("fsincos" : "=t" (*cosval), "=u" (*sinval) : "0" (x));
}
const float PI = 3.1415926532f;
inline float RandomFloat()
@ -250,9 +238,8 @@ public:
const Vector Rotate(float radians) const
{
float sinr;
float cosr;
sincosf(radians, &sinr, &cosr);
float sinr = sinf(radians);
float cosr = cosf(radians);
float newx = x * cosr - y * sinr;
float newy = x * sinr + y * cosr;
return Vector(newx, newy);