text: #ifndef STDMATH
  #define	STDMATH
  /* http://www.gnu.org/software/glibc/) */
  #define M_E		2.7182818284590452354	/* e */
  #define M_LOG2E		1.4426950408889634074	/* log_2 e */
  #define M_LOG10E	0.43429448190325182765	/* log_10 e */
  #define M_LN2		0.69314718055994530942	/* log_e 2 */
  #define M_LN10		2.30258509299404568402	/* log_e 10 */
  #define M_PI		3.14159265358979323846	/* pi */
  #define M_PI_2		1.57079632679489661923	/* pi/2 */
  #define M_PI_4		0.78539816339744830962	/* pi/4 */
  #define M_1_PI		0.31830988618379067154	/* 1/pi */
  #define M_2_PI		0.63661977236758134308	/* 2/pi */
  #define M_2_SQRTPI	1.12837916709551257390	/* 2/sqrt(pi) */
  #define M_SQRT2		1.41421356237309504880	/* sqrt(2) */
  #define M_SQRT1_2	0.70710678118654752440	/* 1/sqrt(2) */
  
  float sinf(float angle);
  
  float cosf(float angle);
  
  float tanf(float angle);
  
  float atanf(float arg);
  
  float expf(float x);
  
  float logf(float x);
  
  float log10f(float x);
  
  float sqrtf(float x);
  
  float powf(float x, float y);
  
  float frexpf(float x, int *exp);
  
  float ldexp(float x, int exp);
  
  float modff(float x, float *iptr);
  
  int mxmulf(unsigned N, float *R, float *A, float *B);
  
  #define floor(x) (((float)(int)(x))<(x))?((float)(int)(x)):((float)((int)(x)-1))
  #define acos(x) (M_PI_2-atanf((x)/sqrtf(1-(x)*(x))))
  #define cos(x) cosf(x)
  #define sqrt(x) sqrtf(x)
  #define fabs(x) (((x)>0)?(x):(0-(x)))
  #define abs(...) fabs(__VA_ARGS__)
  #define labs(...) fabs(__VA_ARGS__)
  #define frexp(...) frexpf(__VA_ARGS__) /*Should be double*/
  #define log10(...) log10f(__VA_ARGS__)
  #define pow(...) powf(__VA_ARGS__)
  
  #endif
  