#include "../SDL_internal.h"
#include "SDL_stdinc.h"
#include "../libm/math_libm.h"

Include dependency graph for SDL_stdlib.c:

Functions
double	SDL_atan (double x)

float	SDL_atanf (float x)

double	SDL_atan2 (double x, double y)

float	SDL_atan2f (float x, float y)

double	SDL_acos (double val)

float	SDL_acosf (float val)

double	SDL_asin (double val)

float	SDL_asinf (float val)

double	SDL_ceil (double x)

float	SDL_ceilf (float x)

double	SDL_copysign (double x, double y)

float	SDL_copysignf (float x, float y)

double	SDL_cos (double x)

float	SDL_cosf (float x)

double	SDL_exp (double x)

float	SDL_expf (float x)

double	SDL_fabs (double x)

float	SDL_fabsf (float x)

double	SDL_floor (double x)

float	SDL_floorf (float x)

double	SDL_fmod (double x, double y)

float	SDL_fmodf (float x, float y)

double	SDL_log (double x)

float	SDL_logf (float x)

double	SDL_log10 (double x)

float	SDL_log10f (float x)

double	SDL_pow (double x, double y)

float	SDL_powf (float x, float y)

double	SDL_scalbn (double x, int n)

float	SDL_scalbnf (float x, int n)

double	SDL_sin (double x)

float	SDL_sinf (float x)

double	SDL_sqrt (double x)

float	SDL_sqrtf (float x)

double	SDL_tan (double x)

float	SDL_tanf (float x)

int	SDL_abs (int x)

int	SDL_isdigit (int x)

int	SDL_isspace (int x)

int	SDL_toupper (int x)

int	SDL_tolower (int x)

Function Documentation

◆ SDL_abs()

int SDL_abs ( int x )

Definition at line 429 of file SDL_stdlib.c.

 {
 #if defined(HAVE_ABS)
     return abs(x);
 #else
     return ((x) < 0 ? -(x) : (x));
 #endif
 }

◆ SDL_acos()

double SDL_acos ( double val )

Definition at line 75 of file SDL_stdlib.c.

 {
 #if defined(HAVE_ACOS)
     return acos(val);
 #else
     double result;
     if (val == -1.0) {
         result = M_PI;
     } else {
         result = SDL_atan(SDL_sqrt(1.0 - val * val) / val);
         if (result < 0.0)
         {
             result += M_PI;
         }
     }
     return result;
 #endif
 }

References SDL_atan(), and SDL_sqrt().

Referenced by SDL_acosf(), and SDL_asin().

◆ SDL_acosf()

float SDL_acosf ( float val )

Definition at line 95 of file SDL_stdlib.c.

 {
 #if defined(HAVE_ACOSF)
     return acosf(val);
 #else
     return (float)SDL_acos((double)val);
 #endif
 }

References SDL_acos().

◆ SDL_asin()

double SDL_asin ( double val )

Definition at line 105 of file SDL_stdlib.c.

 {
 #if defined(HAVE_ASIN)
     return asin(val);
 #else
     double result;
     if (val == -1.0) {
         result = -(M_PI / 2.0);
     } else {
         result = (M_PI / 2.0) - SDL_acos(val);
     }
     return result;
 #endif
 }

References SDL_acos().

Referenced by SDL_asinf().

◆ SDL_asinf()

float SDL_asinf ( float val )

Definition at line 121 of file SDL_stdlib.c.

 {
 #if defined(HAVE_ASINF)
     return asinf(val);
 #else
     return (float)SDL_asin((double)val);
 #endif
 }

References SDL_asin().

◆ SDL_atan()

double SDL_atan ( double x )

Definition at line 35 of file SDL_stdlib.c.

 {
 #if defined(HAVE_ATAN)
     return atan(x);
 #else
     return SDL_uclibc_atan(x);
 #endif
 }

References atan(), and SDL_uclibc_atan().

Referenced by SDL_acos(), and SDL_atanf().

◆ SDL_atan2()

double SDL_atan2	(	double	x,
		double	y
	)

Definition at line 55 of file SDL_stdlib.c.

 {
 #if defined(HAVE_ATAN2)
     return atan2(x, y);
 #else
     return SDL_uclibc_atan2(x, y);
 #endif
 }

References SDL_uclibc_atan2().

Referenced by SDL_atan2f().

◆ SDL_atan2f()

float SDL_atan2f	(	float	x,
		float	y
	)

Definition at line 65 of file SDL_stdlib.c.

 {
 #if defined(HAVE_ATAN2F)
     return atan2f(x, y);
 #else
     return (float)SDL_atan2((double)x, (double)y);
 #endif
 }

References SDL_atan2().

◆ SDL_atanf()

float SDL_atanf ( float x )

Definition at line 45 of file SDL_stdlib.c.

 {
 #if defined(HAVE_ATANF)
     return atanf(x);
 #else
     return (float)SDL_atan((double)x);
 #endif
 }

References SDL_atan().

◆ SDL_ceil()

double SDL_ceil ( double x )

Definition at line 131 of file SDL_stdlib.c.

 {
 #if defined(HAVE_CEIL)
     return ceil(x);
 #else
     double integer = SDL_floor(x);
     double fraction = x - integer;
     if (fraction > 0.0) {
         integer += 1.0;
     }
     return integer;
 #endif /* HAVE_CEIL */
 }

References SDL_floor().

Referenced by SDL_ceilf().

◆ SDL_ceilf()

float SDL_ceilf ( float x )

Definition at line 146 of file SDL_stdlib.c.

 {
 #if defined(HAVE_CEILF)
     return ceilf(x);
 #else
     return (float)SDL_ceil((float)x);
 #endif
 }

References SDL_ceil().

◆ SDL_copysign()

double SDL_copysign	(	double	x,
		double	y
	)

Definition at line 156 of file SDL_stdlib.c.

 {
 #if defined(HAVE_COPYSIGN)
     return copysign(x, y);
 #elif defined(HAVE__COPYSIGN)
     return _copysign(x, y);
 #elif defined(__WATCOMC__) && defined(__386__)
     /* this is nasty as hell, but it works.. */
     unsigned int *xi = (unsigned int *) &x,
                  *yi = (unsigned int *) &y;
     xi[1] = (yi[1] & 0x80000000) | (xi[1] & 0x7fffffff);
     return x;
 #else
     return SDL_uclibc_copysign(x, y);
 #endif /* HAVE_COPYSIGN */
 }

References copysign(), and SDL_uclibc_copysign().

Referenced by SDL_copysignf().

◆ SDL_copysignf()

float SDL_copysignf	(	float	x,
		float	y
	)

Definition at line 174 of file SDL_stdlib.c.

 {
 #if defined(HAVE_COPYSIGNF)
     return copysignf(x, y);
 #else
     return (float)SDL_copysign((double)x, (double)y);
 #endif
 }

References SDL_copysign().

◆ SDL_cos()

double SDL_cos ( double x )

Definition at line 184 of file SDL_stdlib.c.

 {
 #if defined(HAVE_COS)
     return cos(x);
 #else
     return SDL_uclibc_cos(x);
 #endif
 }

References cos(), and SDL_uclibc_cos().

Referenced by SDL_cosf().

◆ SDL_cosf()

float SDL_cosf ( float x )

Definition at line 194 of file SDL_stdlib.c.

 {
 #if defined(HAVE_COSF)
     return cosf(x);
 #else
     return (float)SDL_cos((double)x);
 #endif
 }

References SDL_cos().

◆ SDL_exp()

double SDL_exp ( double x )

Definition at line 204 of file SDL_stdlib.c.

 {
 #if defined(HAVE_EXP)
     return exp(x);
 #else
     return SDL_uclibc_exp(x);
 #endif
 }

References SDL_uclibc_exp().

Referenced by SDL_expf().

◆ SDL_expf()

float SDL_expf ( float x )

Definition at line 214 of file SDL_stdlib.c.

 {
 #if defined(HAVE_EXPF)
     return expf(x);
 #else
     return (float)SDL_exp((double)x);
 #endif
 }

References SDL_exp().

◆ SDL_fabs()

double SDL_fabs ( double x )

Definition at line 224 of file SDL_stdlib.c.

 {
 #if defined(HAVE_FABS)
     return fabs(x);
 #else
     return SDL_uclibc_fabs(x);
 #endif
 }

References fabs(), and SDL_uclibc_fabs().

Referenced by SDL_fabsf().

◆ SDL_fabsf()

float SDL_fabsf ( float x )

Definition at line 234 of file SDL_stdlib.c.

 {
 #if defined(HAVE_FABSF)
     return fabsf(x);
 #else
     return (float)SDL_fabs((double)x);
 #endif
 }

References SDL_fabs().

◆ SDL_floor()

double SDL_floor ( double x )

Definition at line 244 of file SDL_stdlib.c.

 {
 #if defined(HAVE_FLOOR)
     return floor(x);
 #else
     return SDL_uclibc_floor(x);
 #endif
 }

References floor(), and SDL_uclibc_floor().

Referenced by SDL_ceil(), and SDL_floorf().

◆ SDL_floorf()

float SDL_floorf ( float x )

Definition at line 254 of file SDL_stdlib.c.

 {
 #if defined(HAVE_FLOORF)
     return floorf(x);
 #else
     return (float)SDL_floor((double)x);
 #endif
 }

References SDL_floor().

◆ SDL_fmod()

double SDL_fmod	(	double	x,
		double	y
	)

Definition at line 264 of file SDL_stdlib.c.

 {
 #if defined(HAVE_FMOD)
     return fmod(x, y);
 #else
     return SDL_uclibc_fmod(x, y);
 #endif
 }

References SDL_uclibc_fmod().

Referenced by SDL_fmodf().

◆ SDL_fmodf()

float SDL_fmodf	(	float	x,
		float	y
	)

Definition at line 274 of file SDL_stdlib.c.

 {
 #if defined(HAVE_FMODF)
     return fmodf(x, y);
 #else
     return (float)SDL_fmod((double)x, (double)y);
 #endif
 }

References SDL_fmod().

◆ SDL_isdigit()

int SDL_isdigit ( int x )

Definition at line 444 of file SDL_stdlib.c.

444 { return ((x) >= '0') && ((x) <= '9'); }

◆ SDL_isspace()

int SDL_isspace ( int x )

Definition at line 445 of file SDL_stdlib.c.

445 { return ((x) == ' ') || ((x) == '\t') || ((x) == '\r') || ((x) == '\n') || ((x) == '\f') || ((x) == '\v'); }

◆ SDL_log()

double SDL_log ( double x )

Definition at line 284 of file SDL_stdlib.c.

 {
 #if defined(HAVE_LOG)
     return log(x);
 #else
     return SDL_uclibc_log(x);
 #endif
 }

References SDL_uclibc_log().

Referenced by SDL_logf().

◆ SDL_log10()

double SDL_log10 ( double x )

Definition at line 304 of file SDL_stdlib.c.

 {
 #if defined(HAVE_LOG10)
     return log10(x);
 #else
     return SDL_uclibc_log10(x);
 #endif
 }

References SDL_uclibc_log10().

Referenced by SDL_log10f().

◆ SDL_log10f()

float SDL_log10f ( float x )

Definition at line 314 of file SDL_stdlib.c.

 {
 #if defined(HAVE_LOG10F)
     return log10f(x);
 #else
     return (float)SDL_log10((double)x);
 #endif
 }

References SDL_log10().

◆ SDL_logf()

float SDL_logf ( float x )

Definition at line 294 of file SDL_stdlib.c.

 {
 #if defined(HAVE_LOGF)
     return logf(x);
 #else
     return (float)SDL_log((double)x);
 #endif
 }

References SDL_log().

◆ SDL_pow()

double SDL_pow	(	double	x,
		double	y
	)

Definition at line 324 of file SDL_stdlib.c.

 {
 #if defined(HAVE_POW)
     return pow(x, y);
 #else
     return SDL_uclibc_pow(x, y);
 #endif
 }

References SDL_uclibc_pow().

Referenced by SDL_powf().

◆ SDL_powf()

float SDL_powf	(	float	x,
		float	y
	)

Definition at line 334 of file SDL_stdlib.c.

 {
 #if defined(HAVE_POWF)
     return powf(x, y);
 #else
     return (float)SDL_pow((double)x, (double)y);
 #endif
 }

References SDL_pow().

◆ SDL_scalbn()

double SDL_scalbn	(	double	x,
		int	n
	)

Definition at line 344 of file SDL_stdlib.c.

 {
 #if defined(HAVE_SCALBN)
     return scalbn(x, n);
 #elif defined(HAVE__SCALB)
     return _scalb(x, n);
 #elif defined(HAVE_LIBC) && defined(HAVE_FLOAT_H) && (FLT_RADIX == 2)
 /* from scalbn(3): If FLT_RADIX equals 2 (which is
  * usual), then scalbn() is equivalent to ldexp(3). */
     return ldexp(x, n);
 #else
     return SDL_uclibc_scalbn(x, n);
 #endif
 }

References scalbn, and SDL_uclibc_scalbn().

Referenced by SDL_scalbnf().

◆ SDL_scalbnf()

float SDL_scalbnf	(	float	x,
		int	n
	)

Definition at line 360 of file SDL_stdlib.c.

 {
 #if defined(HAVE_SCALBNF)
     return scalbnf(x, n);
 #else
     return (float)SDL_scalbn((double)x, n);
 #endif
 }

References SDL_scalbn().

◆ SDL_sin()

double SDL_sin ( double x )

Definition at line 370 of file SDL_stdlib.c.

 {
 #if defined(HAVE_SIN)
     return sin(x);
 #else
     return SDL_uclibc_sin(x);
 #endif
 }

References SDL_uclibc_sin(), and sin().

Referenced by SDL_sinf().

◆ SDL_sinf()

float SDL_sinf ( float x )

Definition at line 380 of file SDL_stdlib.c.

 {
 #if defined(HAVE_SINF)
     return sinf(x);
 #else
     return (float)SDL_sin((double)x);
 #endif
 }

References SDL_sin().

◆ SDL_sqrt()

double SDL_sqrt ( double x )

Definition at line 390 of file SDL_stdlib.c.

 {
 #if defined(HAVE_SQRT)
     return sqrt(x);
 #else
     return SDL_uclibc_sqrt(x);
 #endif
 }

References SDL_uclibc_sqrt().

Referenced by SDL_acos(), and SDL_sqrtf().

◆ SDL_sqrtf()

float SDL_sqrtf ( float x )

Definition at line 400 of file SDL_stdlib.c.

 {
 #if defined(HAVE_SQRTF)
     return sqrtf(x);
 #else
     return (float)SDL_sqrt((double)x);
 #endif
 }

References SDL_sqrt().

◆ SDL_tan()

double SDL_tan ( double x )

Definition at line 410 of file SDL_stdlib.c.

 {
 #if defined(HAVE_TAN)
     return tan(x);
 #else
     return SDL_uclibc_tan(x);
 #endif
 }

References SDL_uclibc_tan(), and tan().

Referenced by SDL_tanf().

◆ SDL_tanf()

float SDL_tanf ( float x )

Definition at line 420 of file SDL_stdlib.c.

 {
 #if defined(HAVE_TANF)
     return tanf(x);
 #else
     return (float)SDL_tan((double)x);
 #endif
 }

References SDL_tan().

◆ SDL_tolower()

int SDL_tolower ( int x )

Definition at line 447 of file SDL_stdlib.c.

447 { return ((x) >= 'A') && ((x) <= 'Z') ? ('a'+((x)-'A')) : (x); }

◆ SDL_toupper()

int SDL_toupper ( int x )

Definition at line 446 of file SDL_stdlib.c.

446 { return ((x) >= 'a') && ((x) <= 'z') ? ('A'+((x)-'a')) : (x); }

Functions