Move libultra function declarations to libultra headers (#1196)

* Delete unused headers

* Move PR and io to ultra64

* move headers to ultra64

* more cleanups

* more reorganizing

* i think that should be all

* format

* ifdef guards cleanup

* Add IO_READ and IO_WRITE macros for future use

* warnings

* review

Co-authored-by: Tharo <17233964+Thar0@users.noreply.github.com>

* warnings again

* warn

* ifdef guards

* fix merge

* fix merge

* fix merge

* bss

* padutils.h

* bss

* bss

* bss

* fix merge

* bss

* bss

* bss

* fix merge

* fixes

* fixes

* bss

* bss

* fix merge

* fix

* fix

* fix includepaths

* fix paths

* bss

* fix

* ultra64/ -> PR/

* header guards

* fix ehader guards

* fix

* fix++

* format

* bss is borken

* prevent 2

* :despair:

* bss

* rename assert to dbg_hungup

* fix

* a

* fix

* bss

* fix

* bss

* bss

---------

Co-authored-by: Tharo <17233964+Thar0@users.noreply.github.com>

include/libc/alloca.h

@@ -1,5 +1,5 @@
-#ifndef ALLOCA_H
-#define ALLOCA_H
+#ifndef LIBC_ALLOCA_H
+#define LIBC_ALLOCA_H
 
 void* alloca(u32);
 #define alloca  __builtin_alloca

include/libc/assert.h

@@ -1,4 +0,0 @@
-#ifndef ASSERT_H
-#define ASSERT_H
-
-#endif

include/libc/math.h

@@ -1,5 +1,5 @@
-#ifndef MATH_H
-#define MATH_H
+#ifndef LIBC_MATH_H
+#define LIBC_MATH_H
 
 #include "PR/ultratypes.h"
 
@@ -27,8 +27,10 @@ extern f32 __libm_qnan_f;
 
 float fabsf(float f);
 #pragma intrinsic(fabsf)
-float sqrtf(float f);
-#pragma intrinsic(sqrtf)
+#ifdef __GNUC__
+#define fabsf(f) __builtin_fabsf((float)(f))
+#endif
+
 double sqrt(double d);
 #pragma intrinsic(sqrt)
 

include/libc/stdarg.h

@@ -1,7 +1,5 @@
-#ifndef STDARG_H
-#define STDARG_H
-
-#include "ultra64.h"
+#ifndef LIBC_STDARG_H
+#define LIBC_STDARG_H
 
 // When building with GCC, use the official vaarg macros to avoid warnings
 // and possibly bad codegen.

include/libc/stdbool.h

@@ -1,5 +1,5 @@
-#ifndef STDBOOL
-#define STDBOOL
+#ifndef LIBC_STDBOOL_H
+#define LIBC_STDBOOL_H
 
 #define __bool_true_false_are_defined 1
 

include/libc/stddef.h

@@ -1,5 +1,5 @@
-#ifndef STDDEF_H
-#define STDDEF_H
+#ifndef LIBC_STDDEF_H
+#define LIBC_STDDEF_H
 
 #include "PR/ultratypes.h"
 

include/libc/stdint.h

@@ -1,5 +1,5 @@
-#ifndef STDINT_H
-#define STDINT_H
+#ifndef LIBC_STDINT_H
+#define LIBC_STDINT_H
 
 #include "PR/ultratypes.h"
 

include/libc/stdlib.h

@@ -1,5 +1,5 @@
-#ifndef STDLIB_H
-#define STDLIB_H
+#ifndef LIBC_STDLIB_H
+#define LIBC_STDLIB_H
 
 #include "libc/stddef.h"
 
@@ -22,4 +22,7 @@ typedef int ssize_t;
 
 typedef long wchar_t;
 
+ldiv_t ldiv(long numer, long denom);
+lldiv_t lldiv(long long numer, long long denom);
+
 #endif /* STDLIB_H */

include/libc/string.h

@@ -0,0 +1,12 @@
+#ifndef LIBC_STRING_H
+#define LIBC_STRING_H
+
+#include "libc/stddef.h"
+
+
+const char* strchr(const char* s, int c);
+size_t strlen(const char* s);
+void* memcpy(void* s1, const void* s2, size_t n);
+
+
+#endif