* added math.h missing prototypes like log2f. This fixes #6802.

* whitespace cleanup and renamed log2() to radeon_log2 (conflicts with log2 in math.h)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39620 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/posix/math.h

@@ -117,6 +117,7 @@ extern long long	llrintf(float x);
 extern long long	llroundf(float x);
 extern float		log10f(float x);
 extern float		log1pf(float x);
+extern float		log2f(float x);
 extern float		logbf(float x);
 extern float		logf(float x);
 extern long			lrintf(float x);
@@ -124,8 +125,12 @@ extern long			lroundf(float x);
 extern float		modff(float x, float *y);
 extern float		nanf(const char *tagp);
 extern float		nearbyintf(float x);
+extern float		nextafterf(float x, float y);
+extern float		nexttowardf(float x, long double y);
 extern float		powf(float x, float y);
+extern float		remainderf(float x, float y);
 extern float		remquof(float x, float y, int *quo);
+extern float		rintf(float x);
 extern float		roundf(float x);
 extern float		sinf(float x);
 extern float		sinhf(float x);
@@ -160,13 +165,20 @@ extern long long	llrint(double x);
 extern long long	llround(double x);
 extern double		log(double x);
 extern double		log10(double x);
+extern double		log1p(double x);
+extern double		log2(double x);
+extern double		logb(double x);
 extern long			lrint(double x);
 extern long			lround(double x);
 extern double		modf(double x, double *y);
 extern double		nan(const char* tagp);
 extern double		nearbyint(double x);
+extern double		nextafter(double x, double y);
+extern double		nexttoward(double x, long double y);
 extern double		pow(double x, double y);
+extern double		remainder(double x, double y);
 extern double		remquo(double x, double y, int *quo);
+extern double		rint(double x);
 extern double		round(double x);
 extern double		sin(double x);
 extern double		sinh(double x);
@@ -202,8 +214,12 @@ extern long			lroundl(long double x);
 extern long double	modfl(long double value, long double *iptr);
 extern long double	nanl(const char* tagp);
 extern long double	nearbyintl(long double x);
+extern long double	nextafterl(long double x, long double y);
+extern long double	nexttowardl(long double x, long double y);
 extern long double	powl(long double x, long double y);
+extern long double	remainderl(long double x, long double y);
 extern long double	remquol(long double x, long double y, int *quo);
+extern long double	rintl(long double x);
 extern long double	roundl(long double x);
 extern long double	sinl(long double x);
 extern long double	sinhl(long double x);
@@ -224,12 +240,6 @@ extern double		j0(double x);
 extern double		j1(double x);
 extern double		jn(int x, double y);
 extern double		lgamma_r(double x, int *y);
-extern double		log1p(double x);
-extern double		logb(double x);
-extern double		nextafter(double x, double y);
-extern double		nexttoward(double x, long double y);
-extern double		remainder(double x, double y);
-extern double		rint(double x);
 extern double		scalb (double x, double y);
 extern double		y0(double x);
 extern double		y1(double x);
@@ -258,20 +268,12 @@ extern float		erff(float x);
 extern float		erfcf(float x);
 extern float		gammaf_r(float x, int *y);
 extern float		lgammaf_r(float x, int *y);
-extern float		rintf(float x);
-extern float		nextafterf(float x, float y);
-extern float		nexttowardf(float x, long double y);
-extern float		remainderf(float x, float y);
 extern float		scalbf(float x, float n);
 extern float		scalbnf(float x, int n);
 extern int			ilogbf(float x);
 
 extern long double	erfcl(long double x);
 extern long double	erfl(long double x);
-extern long double	nextafterl(long double x, long double y);
-extern long double	nexttowardl(long double x, long double y);
-extern long double	remainderl(long double x, long double y);
-extern long double	rintl(long double x);
 extern long double	scalbnl(long double x, int n);
 extern long double	scalblnl(long double x, long n);
 

headers/private/graphics/radeon/utils.h

@@ -15,7 +15,7 @@ extern "C" {
 #endif
 
 
-extern int log2( uint32 x );
+extern int radeon_log2( uint32 x );
 
 static inline int RoundDiv( int num, int den )
 {

src/add-ons/kernel/drivers/graphics/radeon/CP_setup.c

@@ -349,8 +349,8 @@ static status_t initRingBuffer( device_info *di, int aring_size )
 
 	// set ring buffer size
 	// (it's log2 of qwords)
-	OUTREG( regs, RADEON_CP_RB_CNTL, log2( cp->ring.size / 2 ));
+	OUTREG( regs, RADEON_CP_RB_CNTL, radeon_log2( cp->ring.size / 2 ));
-	SHOW_INFO( 3, "CP buffer size mask=%d", log2( cp->ring.size / 2 ) );
+	SHOW_INFO( 3, "CP buffer size mask=%d", radeon_log2( cp->ring.size / 2 ) );
 
 	// set write pointer delay to zero;
 	// we assume that memory synchronization is done correctly my MoBo

src/add-ons/kernel/drivers/graphics/radeon/utils.c

@@ -11,7 +11,7 @@
 #include "utils.h"
 
 // get ceil( log2( size ))
-int log2( uint32 x )
+int radeon_log2( uint32 x )
 {
 	int res;
 	uint32 tmp;