diff options
Diffstat (limited to 'hw/xfree86/os-support/misc/xf86_Util.c')
| -rw-r--r-- | hw/xfree86/os-support/misc/xf86_Util.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/hw/xfree86/os-support/misc/xf86_Util.c b/hw/xfree86/os-support/misc/xf86_Util.c new file mode 100644 index 000000000..a68d2ca89 --- /dev/null +++ b/hw/xfree86/os-support/misc/xf86_Util.c @@ -0,0 +1,126 @@ +/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/misc/xf86_Util.c,v 3.4 1996/12/23 06:50:25 dawes Exp $ */ +/* + * Copyright 1993 by David Wexelblat <dwex@goblin.org> + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of David Wexelblat not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. David Wexelblat makes no representations + * about the suitability of this software for any purpose. It is provided + * "as is" without express or implied warranty. + * + * DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL DAVID WEXELBLAT BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + * + */ +/* $Xorg: xf86_Util.c,v 1.3 2000/08/17 19:51:26 cpqbld Exp $ */ + +/* + * This file is for utility functions that will be shared by other pieces + * of the system. Putting things here ensure that all the linking order + * dependencies are dealt with, as this library will be linked in last. + */ + +#include <ctype.h> + +/* + * A portable hack at implementing strcasecmp() + * The characters '_', ' ', and '\t' are ignored in the comparison + */ +int StrCaseCmp(s1, s2) +const char *s1, *s2; +{ + char c1, c2; + + if (*s1 == 0) + if (*s2 == 0) + return(0); + else + return(1); + + while (*s1 == '_' || *s1 == ' ' || *s1 == '\t') + s1++; + while (*s2 == '_' || *s2 == ' ' || *s2 == '\t') + s2++; + c1 = (isupper(*s1) ? tolower(*s1) : *s1); + c2 = (isupper(*s2) ? tolower(*s2) : *s2); + while (c1 == c2) + { + if (c1 == '\0') + return(0); + s1++; s2++; + while (*s1 == '_' || *s1 == ' ' || *s1 == '\t') + s1++; + while (*s2 == '_' || *s2 == ' ' || *s2 == '\t') + s2++; + c1 = (isupper(*s1) ? tolower(*s1) : *s1); + c2 = (isupper(*s2) ? tolower(*s2) : *s2); + } + return(c1 - c2); +} + + +/* For use only with gcc */ +#ifdef __GNUC__ + +#include "os.h" + +char *debug_alloca(file, line, size) +char *file; +int line; +int size; +{ + char *ptr; + + ptr = (char *)Xalloc(size); + ErrorF("Alloc: %s line %d; ptr = 0x%x, length = %d\n", file, line, + ptr, size); + return ptr; +} + +void debug_dealloca(file, line, ptr) +char *file; +int line; +char *ptr; +{ + ErrorF("Dealloc: %s line %d; ptr = 0x%x\n", file, line, ptr); + Xfree(ptr); +} +#endif + +#if defined(ISC) || defined(Lynx) + +#include <math.h> + +/* Needed for apm_driver.c */ +/* These functions are modeled after the functions inside gnu's libc */ + +static double copysign(double x, double y) +{ + x = fabs(x); + return y < 0 ? - x : x; +} + +double RInt(double x) +{ + double s,t; + const double one = 1.0; + const static double L = 4503599627370496.0E0; + + if (x!=x) + return(x); + if (copysign(x,one) >= L) + return(x); + s = copysign(L,x); + t = x + s; + return (t - s); +} +#endif |