[SDK] One step further towards ReactOS source code tree restructure: the sdk folder...

[reactos.git] / reactos / lib / sdk / crt / math / amd64 / ceil.S

diff --git a/reactos/lib/sdk/crt/math/amd64/ceil.S b/reactos/lib/sdk/crt/math/amd64/ceil.S
deleted file mode 100644 (file)
index f88403e..0000000
--- a/reactos/lib/sdk/crt/math/amd64/ceil.S
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * COPYRIGHT:         See COPYING in the top level directory
- * PROJECT:           ReactOS system libraries
- * PURPOSE:           Implementation of ceil
- * FILE:              lib/sdk/crt/math/amd64/ceil.S
- * PROGRAMMER:        Timo Kreuzer (timo.kreuzer@reactos.org)
- */
-
-/* INCLUDES ******************************************************************/
-
-#include <asm.inc>
-#include <ksamd64.inc>
-
-/* CODE **********************************************************************/
-.code64
-
-/* ceil(x) = - floor(-x)
- */
-PUBLIC ceil
-.PROC ceil
-    sub rsp, 16
-    .ENDPROLOG
-
-    /* Duplicate the bits into rax */
-    movd rax, xmm0
-
-    /* Invert the sign bit */
-    rol rax, 1
-    xor al, 1
-    ror rax, 1
-
-    /* Copy back to xmm0 */
-    movd xmm0, rax
-
-    /* Truncate xmm0 to integer (double precision) */
-    cvttsd2si rcx, xmm0
-
-    /* Shift all bits to the right, keeping the sign bit */
-    shr rax, 63
-
-    /* Substract the sign bit from the truncated value, so that
-       we get the correct result for negative values. */
-    sub rcx, rax
-
-    /* Now compensate for the previous negation */
-    neg rcx
-
-    /* Convert the result back to xmm0 (double precision) */
-    cvtsi2sd xmm0, rcx
-
-    add rsp, 16
-    ret
-.ENDP
-
-END