summaryrefslogtreecommitdiffstatshomepage
path: root/3rdparty/SDL2/src/libm/s_floor.c
diff options
context:
space:
mode:
Diffstat (limited to '3rdparty/SDL2/src/libm/s_floor.c')
-rw-r--r--3rdparty/SDL2/src/libm/s_floor.c96
1 files changed, 0 insertions, 96 deletions
diff --git a/3rdparty/SDL2/src/libm/s_floor.c b/3rdparty/SDL2/src/libm/s_floor.c
deleted file mode 100644
index b553d303828..00000000000
--- a/3rdparty/SDL2/src/libm/s_floor.c
+++ /dev/null
@@ -1,96 +0,0 @@
-/* @(#)s_floor.c 5.1 93/09/24 */
-/*
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- *
- * Developed at SunPro, a Sun Microsystems, Inc. business.
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
- * is preserved.
- * ====================================================
- */
-
-#if defined(LIBM_SCCS) && !defined(lint)
-static const char rcsid[] =
- "$NetBSD: s_floor.c,v 1.8 1995/05/10 20:47:20 jtc Exp $";
-#endif
-
-/*
- * floor(x)
- * Return x rounded toward -inf to integral value
- * Method:
- * Bit twiddling.
- * Exception:
- * Inexact flag raised if x not equal to floor(x).
- */
-
-#include "math_libm.h"
-#include "math_private.h"
-
-#ifdef __STDC__
-static const double huge_val = 1.0e300;
-#else
-static double huge_val = 1.0e300;
-#endif
-
-libm_hidden_proto(floor)
-#ifdef __STDC__
- double floor(double x)
-#else
- double floor(x)
- double x;
-#endif
-{
- int32_t i0, i1, j0;
- u_int32_t i, j;
- EXTRACT_WORDS(i0, i1, x);
- j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;
- if (j0 < 20) {
- if (j0 < 0) { /* raise inexact if x != 0 */
- if (huge_val + x > 0.0) { /* return 0*sign(x) if |x|<1 */
- if (i0 >= 0) {
- i0 = i1 = 0;
- } else if (((i0 & 0x7fffffff) | i1) != 0) {
- i0 = 0xbff00000;
- i1 = 0;
- }
- }
- } else {
- i = (0x000fffff) >> j0;
- if (((i0 & i) | i1) == 0)
- return x; /* x is integral */
- if (huge_val + x > 0.0) { /* raise inexact flag */
- if (i0 < 0)
- i0 += (0x00100000) >> j0;
- i0 &= (~i);
- i1 = 0;
- }
- }
- } else if (j0 > 51) {
- if (j0 == 0x400)
- return x + x; /* inf or NaN */
- else
- return x; /* x is integral */
- } else {
- i = ((u_int32_t) (0xffffffff)) >> (j0 - 20);
- if ((i1 & i) == 0)
- return x; /* x is integral */
- if (huge_val + x > 0.0) { /* raise inexact flag */
- if (i0 < 0) {
- if (j0 == 20)
- i0 += 1;
- else {
- j = i1 + (1 << (52 - j0));
- if (j < (u_int32_t) i1)
- i0 += 1; /* got a carry */
- i1 = j;
- }
- }
- i1 &= (~i);
- }
- }
- INSERT_WORDS(x, i0, i1);
- return x;
-}
-
-libm_hidden_def(floor)