incidentalstoat/blankart
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

fastcmp.h: mark fastcmp functions as pure

Browse source 
this might let the compiler optimize aways subsequent calls in some cases
strcmp etc from glibc also does it
prayin nothin changes the locale at runtime lmao
This commit is contained in:
Alug 2025-12-11 20:10:01 +01:00 committed by NepDisk
parent cfd34a6148
commit 1ce0c7d5af
2 changed files with 7 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
src/doomtype.h
View file

@ -199,6 +199,7 @@ typedef int32_t boolean;
#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1) // >= GCC 3.1
#define FUNCDEAD __attribute__ ((deprecated))
#define FUNCINLINE __attribute__((always_inline))
#define PUREFUNC __attribute__((pure))
#define FUNCNONNULL __attribute__((nonnull))
#endif
@ -264,6 +265,9 @@ typedef int32_t boolean;
#ifndef ATTRNOINLINE
#define ATTRNOINLINE
#endif
#ifndef PUREFUNC
#define PUREFUNC
#endif
/* Miscellaneous types that don't fit anywhere else (Can this be changed?) */

6
src/fastcmp.h
View file

@ -7,14 +7,14 @@ extern "C" {
// returns false if s != c
// returns true if s == c
FUNCINLINE static ATTRINLINE boolean fasticmp(const char *s, const char *c)
FUNCINLINE static ATTRINLINE PUREFUNC boolean fasticmp(const char *s, const char *c)
{
for (; *s && toupper(*s) == toupper(*c); s++, c++) ;
return (*s == *c); // make sure both strings ended
}
// case-sensitive of the above
FUNCINLINE static ATTRINLINE boolean fastcmp(const char *s, const char *c)
FUNCINLINE static ATTRINLINE PUREFUNC boolean fastcmp(const char *s, const char *c)
{
for (; *s && *s == *c; s++, c++) ;
return (*s == *c); // make sure both strings ended
@ -22,7 +22,7 @@ FUNCINLINE static ATTRINLINE boolean fastcmp(const char *s, const char *c)
// length-limited of the above
// only true if both strings are at least l characters long AND match, case-sensitively!
FUNCINLINE static ATTRINLINE boolean fastncmp(const char *s, const char *c, UINT16 l)
FUNCINLINE static ATTRINLINE PUREFUNC boolean fastncmp(const char *s, const char *c, UINT16 l)
{
for (; *s && *s == *c && --l; s++, c++) ;
return !l; // make sure you reached the end