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stdlib: Add SDL_trunc and SDL_truncf

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This commit is contained in:
Ryan C. Gordon 2020-04-10 12:17:14 -04:00
parent a791689086
commit d292f6bd4f
7 changed files with 32 additions and 4 deletions
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5
CMakeLists.txt
View file

@ -767,7 +767,8 @@ if(LIBC)
_stricmp _strnicmp strtok_s sscanf
acos acosf asin asinf atan atanf atan2 atan2f ceil ceilf
copysign copysignf cos cosf exp expf fabs fabsf floor floorf fmod fmodf
log logf log10 log10f pow powf scalbn scalbnf sin sinf sqrt sqrtf tan tanf)
log logf log10 log10f pow powf scalbn scalbnf sin sinf sqrt sqrtf tan tanf
trunc truncf)
string(TOUPPER ${_FN} _UPPER)
set(HAVE_${_UPPER} 1)
endforeach()
@ -817,7 +818,7 @@ if(LIBC)
atan atan2 atanf atan2f ceil ceilf copysign copysignf cos cosf
exp expf fabs fabsf floor floorf fmod fmodf log logf log10 log10f
pow powf scalbn scalbnf sin sinf sqrt sqrtf tan tanf acos acosf
asin asinf)
asin asinf trunc truncf)
string(TOUPPER ${_FN} _UPPER)
set(_HAVEVAR "HAVE_${_UPPER}")
check_function_exists("${_FN}" ${_HAVEVAR})

2
configure vendored
View file

@ -17132,7 +17132,7 @@ if test "x$ac_cv_lib_m_pow" = xyes; then :
LIBS="$LIBS -lm"; EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lm"
fi
for ac_func in acos acosf asin asinf atan atanf atan2 atan2f ceil ceilf copysign copysignf cos cosf exp expf fabs fabsf floor floorf fmod fmodf log logf log10 log10f pow powf scalbn scalbnf sin sinf sqrt sqrtf tan tanf
for ac_func in acos acosf asin asinf atan atanf atan2 atan2f ceil ceilf copysign copysignf cos cosf exp expf fabs fabsf floor floorf trunc truncf fmod fmodf log logf log10 log10f pow powf scalbn scalbnf sin sinf sqrt sqrtf tan tanf
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"

2
configure.ac
View file

@ -339,7 +339,7 @@ if test x$enable_libc = xyes; then
AC_CHECK_FUNCS(malloc calloc realloc free getenv setenv putenv unsetenv qsort abs bcopy memset memcpy memmove wcslen wcslcpy wcslcat wcsdup wcsstr wcscmp wcsncmp strlen strlcpy strlcat _strrev _strupr _strlwr strchr strrchr strstr strtok_r itoa _ltoa _uitoa _ultoa strtol strtoul _i64toa _ui64toa strtoll strtoull atoi atof strcmp strncmp _stricmp strcasecmp _strnicmp strncasecmp vsscanf vsnprintf fopen64 fseeko fseeko64 sigaction setjmp nanosleep sysconf sysctlbyname getauxval poll _Exit)
AC_CHECK_LIB(m, pow, [LIBS="$LIBS -lm"; EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lm"])
AC_CHECK_FUNCS(acos acosf asin asinf atan atanf atan2 atan2f ceil ceilf copysign copysignf cos cosf exp expf fabs fabsf floor floorf fmod fmodf log logf log10 log10f pow powf scalbn scalbnf sin sinf sqrt sqrtf tan tanf)
AC_CHECK_FUNCS(acos acosf asin asinf atan atanf atan2 atan2f ceil ceilf copysign copysignf cos cosf exp expf fabs fabsf floor floorf trunc truncf fmod fmodf log logf log10 log10f pow powf scalbn scalbnf sin sinf sqrt sqrtf tan tanf)
AC_CHECK_LIB(iconv, iconv_open, [LIBS="$LIBS -liconv"; EXTRA_LDFLAGS="$EXTRA_LDFLAGS -liconv"])
AC_CHECK_FUNCS(iconv)

2
include/SDL_stdinc.h
View file

@ -529,6 +529,8 @@ extern DECLSPEC double SDLCALL SDL_fabs(double x);
extern DECLSPEC float SDLCALL SDL_fabsf(float x);
extern DECLSPEC double SDLCALL SDL_floor(double x);
extern DECLSPEC float SDLCALL SDL_floorf(float x);
extern DECLSPEC double SDLCALL SDL_trunc(double x);
extern DECLSPEC float SDLCALL SDL_truncf(float x);
extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
extern DECLSPEC double SDLCALL SDL_log(double x);

2
src/dynapi/SDL_dynapi_overrides.h
View file

@ -761,3 +761,5 @@
#define SDL_UnlockSensors SDL_UnlockSensors_REAL
#define SDL_Metal_GetLayer SDL_Metal_GetLayer_REAL
#define SDL_Metal_GetDrawableSize SDL_Metal_GetDrawableSize_REAL
#define SDL_trunc SDL_trunc_REAL
#define SDL_truncf SDL_truncf_REAL

2
src/dynapi/SDL_dynapi_procs.h
View file

@ -820,3 +820,5 @@ SDL_DYNAPI_PROC(void,SDL_LockSensors,(void),(),)
SDL_DYNAPI_PROC(void,SDL_UnlockSensors,(void),(),)
SDL_DYNAPI_PROC(void*,SDL_Metal_GetLayer,(SDL_MetalView a),(a),return)
SDL_DYNAPI_PROC(void,SDL_Metal_GetDrawableSize,(SDL_Window *a, int *b, int *c),(a,b,c),)
SDL_DYNAPI_PROC(double,SDL_trunc,(double a),(a),return)
SDL_DYNAPI_PROC(float,SDL_truncf,(float a),(a),return)

21
src/stdlib/SDL_stdlib.c
View file

@ -260,6 +260,27 @@ SDL_floorf(float x)
#endif
}
double
SDL_trunc(double x)
{
#if defined(HAVE_TRUNC)
return trunc(x);
#else
/* !!! FIXME: there are more formal (correct!) ways to do this. */
return (double) ((Sint64) x);
#endif
}
float
SDL_truncf(float x)
{
#if defined(HAVE_TRUNCF)
return truncf(x);
#else
return (float)SDL_trunc((double)x);
#endif
}
double
SDL_fmod(double x, double y)
{