Changeset 96338 in vbox for trunk/src/VBox/Runtime/common/math

Timestamp:

Aug 19, 2022 3:07:12 PM (3 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

153154

Message:

IPRT/nocrt: Implemented powf. bugref:10261

Location:

trunk/src/VBox/Runtime/common/math

Files:

• pow.asm (modified) (1 diff)
• powf.asm (copied) (copied from trunk/src/VBox/Runtime/common/math/pow.asm ) (5 diffs)

trunk/src/VBox/Runtime/common/math/pow.asm

@@ -39 +39 @@
 ; @returns st(0) / xmm0
 ; @param    rdBase      [xSP + xCB*2] / xmm0
-; @param    rdExp       [xSP + xCB*2 + RTLRD_CB] / xmm1
+; @param    rdExp       [xSP + xCB*2 + 8] / xmm1
+;
 RT_NOCRT_BEGINPROC pow
         push    xBP

trunk/src/VBox/Runtime/common/math/powf.asm

@@ -1 +1 @@
 ; $Id$
 ;; @file
-; IPRT - No-CRT pow - AMD64 & X86.
+; IPRT - No-CRT powf - AMD64 & X86.
 ;
 
@@ -36 +36 @@
 
 ;;
-; Compute the rdBase to the power of rdExp.
+; Compute the rfBase to the power of rfExp.
 ; @returns st(0) / xmm0
-; @param    rdBase      [xSP + xCB*2] / xmm0
-; @param    rdExp       [xSP + xCB*2 + RTLRD_CB] / xmm1
-RT_NOCRT_BEGINPROC pow
+; @param    rfBase      [xSP + xCB*2] / xmm0
+; @param    rfExp       [xSP + xCB*2 + 4] / xmm1
+;
+RT_NOCRT_BEGINPROC powf
         push    xBP
         SEH64_PUSH_xBP
@@ -55 +56 @@
         ;
 %ifdef RT_ARCH_AMD64
-        movsd   [xBP - 20h], xmm0
-        fld     qword [xBP - 20h]
+        movss   [xBP - 20h], xmm0
+        fld     dword [xBP - 20h]
         fxam
         fnstsw  ax
         mov     dx, ax                      ; dx=fxam(base)
 
-        movsd   [xBP - 30h], xmm1
-        fld     qword [xBP - 30h]
+        movss   [xBP - 30h], xmm1
+        fld     dword [xBP - 30h]
 %else
-        fld     qword [xBP + xCB*2]
+        fld     dword [xBP + xCB*2]
         fxam
         fnstsw  ax
         mov     dx, ax                      ; dx=fxam(base)
 
-        fld     qword [xBP + xCB*2 + RTLRD_CB]
+        fld     dword [xBP + xCB*2 + RTLRD_CB]
 %endif
 
@@ -85 +86 @@
         jne     .return_input_reg
 
-        fstp    qword [xSP - 30h]
-        movsd   xmm0, [xSP - 30h]
+        fstp    dword [xSP - 30h]
+        movss   xmm0, [xSP - 30h]
 
 .return:
@@ -111 +112 @@
 
 .return_exp:
-        movsd   xmm0, xmm1
+        movss   xmm0, xmm1
         jmp     .return
-ENDPROC   RT_NOCRT(pow)
+ENDPROC   RT_NOCRT(powf)