;--------------------------------------------------------
; File Created by SDCC : FreeWare ANSI-C Compiler
; Version 2.5.1 #1056 (Oct 12 2005)
; This file generated Wed Oct 12 23:06:18 2005
;--------------------------------------------------------
	.module sqrtf
	.optsdcc -mmcs51 --model-large
	
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
	.globl _sqrtf
;--------------------------------------------------------
; special function registers
;--------------------------------------------------------
	.area RSEG    (DATA)
;--------------------------------------------------------
; special function bits 
;--------------------------------------------------------
	.area RSEG    (DATA)
;--------------------------------------------------------
; overlayable register banks 
;--------------------------------------------------------
	.area REG_BANK_0	(REL,OVR,DATA)
	.ds 8
;--------------------------------------------------------
; internal ram data
;--------------------------------------------------------
	.area DSEG    (DATA)
;--------------------------------------------------------
; overlayable items in internal ram 
;--------------------------------------------------------
	.area OSEG    (OVR,DATA)
;--------------------------------------------------------
; indirectly addressable internal ram data
;--------------------------------------------------------
	.area ISEG    (DATA)
;--------------------------------------------------------
; bit data
;--------------------------------------------------------
	.area BSEG    (BIT)
;--------------------------------------------------------
; paged external ram data
;--------------------------------------------------------
	.area PSEG    (PAG,XDATA)
;--------------------------------------------------------
; external ram data
;--------------------------------------------------------
	.area XSEG    (XDATA)
;--------------------------------------------------------
; external initialized ram data
;--------------------------------------------------------
	.area XISEG   (XDATA)
	.area CSEG    (CODE)
	.area GSINIT0 (CODE)
	.area GSINIT1 (CODE)
	.area GSINIT2 (CODE)
	.area GSINIT3 (CODE)
	.area GSINIT4 (CODE)
	.area GSINIT5 (CODE)
;--------------------------------------------------------
; global & static initialisations
;--------------------------------------------------------
	.area CSEG    (CODE)
	.area GSINIT  (CODE)
	.area GSFINAL (CODE)
	.area GSINIT  (CODE)
;--------------------------------------------------------
; Home
;--------------------------------------------------------
	.area HOME    (CODE)
	.area CSEG    (CODE)
;--------------------------------------------------------
; code
;--------------------------------------------------------
	.area CSEG    (CODE)
;------------------------------------------------------------
;Allocation info for local variables in function 'sqrtf'
;------------------------------------------------------------
;x                         Allocated to registers r2 r3 r4 r5 
;f                         Allocated to stack - offset 1
;y                         Allocated to stack - offset 5
;n                         Allocated to stack - offset 9
;sloc0                     Allocated to stack - offset 11
;------------------------------------------------------------
;sqrtf.c:27: float sqrtf(const float x) _FLOAT_FUNC_REENTRANT
;	-----------------------------------------
;	 function sqrtf
;	-----------------------------------------
_sqrtf:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
	push	_bp
	mov	_bp,sp
;     genReceive
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
	mov	r5,a
	mov	a,sp
	add	a,#0x0e
	mov	sp,a
;sqrtf.c:32: if (x==0.0) return x;
;     genIpush
	push	ar2
	push	ar3
	push	ar4
	push	ar5
;	Peephole 181	changed mov to clr
	clr	a
	push	acc
;	Peephole 181	changed mov to clr
	clr	a
	push	acc
;	Peephole 181	changed mov to clr
	clr	a
	push	acc
;	Peephole 181	changed mov to clr
	clr	a
	push	acc
;     genCall
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
	mov	a,r5
	lcall	___fseq
	mov	r6,dpl
	mov	a,sp
	add	a,#0xfc
	mov	sp,a
	pop	ar5
	pop	ar4
	pop	ar3
	pop	ar2
;     genIfx
	mov	a,r6
;     genIfxJump
;	Peephole 110	removed ljmp by inverse jump logic
	jz	00107$
00117$:
;     genRet
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
	mov	a,r5
	ljmp	00111$
00107$:
;sqrtf.c:33: else if (x==1.0) return 1.0;
;     genIpush
	push	ar2
	push	ar3
	push	ar4
	push	ar5
;	Peephole 181	changed mov to clr
	clr	a
	push	acc
;	Peephole 181	changed mov to clr
	clr	a
	push	acc
	mov	a,#0x80
	push	acc
	mov	a,#0x3F
	push	acc
;     genCall
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
	mov	a,r5
	lcall	___fseq
	mov	r6,dpl
	mov	a,sp
	add	a,#0xfc
	mov	sp,a
	pop	ar5
	pop	ar4
	pop	ar3
	pop	ar2
;     genIfx
	mov	a,r6
;     genIfxJump
;	Peephole 110	removed ljmp by inverse jump logic
	jz	00104$
00118$:
;     genRet
;	Peephole 182.b	used 16 bit load of dptr
	mov	dptr,#0x0000
	mov	b,#0x80
	mov	a,#0x3F
	ljmp	00111$
00104$:
;sqrtf.c:34: else if (x<0.0)
;     genIpush
	push	ar2
	push	ar3
	push	ar4
	push	ar5
;	Peephole 181	changed mov to clr
	clr	a
	push	acc
;	Peephole 181	changed mov to clr
	clr	a
	push	acc
;	Peephole 181	changed mov to clr
	clr	a
	push	acc
;	Peephole 181	changed mov to clr
	clr	a
	push	acc
;     genCall
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
	mov	a,r5
	lcall	___fslt
	mov	r6,dpl
	mov	a,sp
	add	a,#0xfc
	mov	sp,a
	pop	ar5
	pop	ar4
	pop	ar3
	pop	ar2
;     genIfx
	mov	a,r6
;     genIfxJump
;	Peephole 110	removed ljmp by inverse jump logic
	jz	00108$
00119$:
;sqrtf.c:36: errno=EDOM;
;     genAssign
	mov	dptr,#_errno
	mov	a,#0x21
	movx	@dptr,a
	clr	a
	inc	dptr
	movx	@dptr,a
;sqrtf.c:37: return 0.0;
;     genRet
;	Peephole 3.a	changed mov to clr
;	Peephole 3.b	changed mov to clr
;	Peephole 182.d	used 16 bit load of dptr
	mov	dptr,#(0x00&0x00ff)
	clr	a
	mov	b,a
	ljmp	00111$
00108$:
;sqrtf.c:39: f=frexpf(x, &n);
;     genAddrOf
	mov	a,_bp
	add	a,#0x09
;     genCast
;	Peephole 100	removed redundant mov
	mov	r6,a
	mov	dptr,#_frexpf_PARM_2
	movx	@dptr,a
	inc	dptr
;	Peephole 181	changed mov to clr
	clr	a
	movx	@dptr,a
	inc	dptr
	mov	a,#0x40
	movx	@dptr,a
;     genCall
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
	mov	a,r5
	lcall	_frexpf
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
	mov	r5,a
;     genAssign
	mov	r0,_bp
	inc	r0
	mov	@r0,ar2
	inc	r0
	mov	@r0,ar3
	inc	r0
	mov	@r0,ar4
	inc	r0
	mov	@r0,ar5
;sqrtf.c:40: y=0.41731+0.59016*f; /*Educated guess*/
;     genIpush
	mov	a,#0xBA
	push	acc
	mov	a,#0x14
	push	acc
	mov	a,#0x17
	push	acc
	mov	a,#0x3F
	push	acc
;     genCall
	mov	r0,_bp
	inc	r0
	mov	dpl,@r0
	inc	r0
	mov	dph,@r0
	inc	r0
	mov	b,@r0
	inc	r0
	mov	a,@r0
	lcall	___fsmul
	mov	r6,dpl
	mov	r7,dph
	mov	r2,b
	mov	r3,a
	mov	a,sp
	add	a,#0xfc
	mov	sp,a
;     genIpush
	mov	a,#0xA8
	push	acc
	mov	a,#0xA9
	push	acc
	mov	a,#0xD5
	push	acc
	mov	a,#0x3E
	push	acc
;     genCall
	mov	dpl,r6
	mov	dph,r7
	mov	b,r2
	mov	a,r3
	lcall	___fsadd
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
	mov	r5,a
	mov	a,sp
	add	a,#0xfc
	mov	sp,a
;     genAssign
	mov	a,_bp
	add	a,#0x05
	mov	r0,a
	mov	@r0,ar2
	inc	r0
	mov	@r0,ar3
	inc	r0
	mov	@r0,ar4
	inc	r0
	mov	@r0,ar5
;sqrtf.c:42: y+=f/y;
;     genIpush
	mov	a,_bp
	add	a,#0x05
	mov	r0,a
	mov	a,@r0
	push	acc
	inc	r0
	mov	a,@r0
	push	acc
	inc	r0
	mov	a,@r0
	push	acc
	inc	r0
	mov	a,@r0
	push	acc
;     genCall
	mov	r0,_bp
	inc	r0
	mov	dpl,@r0
	inc	r0
	mov	dph,@r0
	inc	r0
	mov	b,@r0
	inc	r0
	mov	a,@r0
	lcall	___fsdiv
	mov	r6,dpl
	mov	r7,dph
	mov	r2,b
	mov	r3,a
	mov	a,sp
	add	a,#0xfc
	mov	sp,a
;     genIpush
	push	ar6
	push	ar7
	push	ar2
	push	ar3
;     genCall
	mov	a,_bp
	add	a,#0x05
	mov	r0,a
	mov	dpl,@r0
	inc	r0
	mov	dph,@r0
	inc	r0
	mov	b,@r0
	inc	r0
	mov	a,@r0
	lcall	___fsadd
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
	mov	r5,a
	mov	a,sp
	add	a,#0xfc
	mov	sp,a
;     genAssign
	mov	a,_bp
	add	a,#0x05
	mov	r0,a
	mov	@r0,ar2
	inc	r0
	mov	@r0,ar3
	inc	r0
	mov	@r0,ar4
	inc	r0
	mov	@r0,ar5
;sqrtf.c:43: y=ldexpf(y, -2) + f/y; /*Faster version of 0.25 * y + f/y*/
;     genAssign
	mov	dptr,#_ldexpf_PARM_2
	mov	a,#0xFE
	movx	@dptr,a
	inc	dptr
	mov	a,#0xFF
	movx	@dptr,a
;     genCall
	mov	a,_bp
	add	a,#0x05
	mov	r0,a
	mov	dpl,@r0
	inc	r0
	mov	dph,@r0
	inc	r0
	mov	b,@r0
	inc	r0
	mov	a,@r0
	lcall	_ldexpf
	push	acc
	mov	a,_bp
	add	a,#0x0b
	mov	r0,a
	pop	acc
	mov	@r0,dpl
	inc	r0
	mov	@r0,dph
	inc	r0
	mov	@r0,b
	inc	r0
	mov	@r0,a
;     genIpush
	mov	a,_bp
	add	a,#0x05
	mov	r0,a
	mov	a,@r0
	push	acc
	inc	r0
	mov	a,@r0
	push	acc
	inc	r0
	mov	a,@r0
	push	acc
	inc	r0
	mov	a,@r0
	push	acc
;     genCall
	mov	r0,_bp
	inc	r0
	mov	dpl,@r0
	inc	r0
	mov	dph,@r0
	inc	r0
	mov	b,@r0
	inc	r0
	mov	a,@r0
	lcall	___fsdiv
	mov	r6,dpl
	mov	r7,dph
	mov	r2,b
	mov	r3,a
	mov	a,sp
	add	a,#0xfc
	mov	sp,a
;     genIpush
	push	ar6
	push	ar7
	push	ar2
	push	ar3
;     genCall
	mov	a,_bp
	add	a,#0x0b
	mov	r0,a
	mov	dpl,@r0
	inc	r0
	mov	dph,@r0
	inc	r0
	mov	b,@r0
	inc	r0
	mov	a,@r0
	lcall	___fsadd
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
	mov	r5,a
	mov	a,sp
	add	a,#0xfc
	mov	sp,a
;     genAssign
	mov	a,_bp
	add	a,#0x05
	mov	r0,a
	mov	@r0,ar2
	inc	r0
	mov	@r0,ar3
	inc	r0
	mov	@r0,ar4
	inc	r0
	mov	@r0,ar5
;sqrtf.c:45: if (n&1)
;     genAnd
	mov	a,_bp
	add	a,#0x09
	mov	r0,a
	mov	a,@r0
;     genIfxJump
;	Peephole 111	removed ljmp by inverse jump logic
	jnb	acc.0,00110$
00120$:
;sqrtf.c:47: y*=0.7071067812;
;     genIpush
	mov	a,#0xF3
	push	acc
	mov	a,#0x04
	push	acc
	mov	a,#0x35
	push	acc
	mov	a,#0x3F
	push	acc
;     genCall
	mov	a,_bp
	add	a,#0x05
	mov	r0,a
	mov	dpl,@r0
	inc	r0
	mov	dph,@r0
	inc	r0
	mov	b,@r0
	inc	r0
	mov	a,@r0
	lcall	___fsmul
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
	mov	r5,a
	mov	a,sp
	add	a,#0xfc
	mov	sp,a
;     genAssign
	mov	a,_bp
	add	a,#0x05
	mov	r0,a
	mov	@r0,ar2
	inc	r0
	mov	@r0,ar3
	inc	r0
	mov	@r0,ar4
	inc	r0
	mov	@r0,ar5
;sqrtf.c:48: ++n;
;     genPlus
	mov	a,_bp
	add	a,#0x09
	mov	r0,a
;     genPlusIncr
	mov	a,#0x01
	add	a,@r0
	mov	@r0,a
;	Peephole 181	changed mov to clr
	clr	a
	inc	r0
	addc	a,@r0
	mov	@r0,a
00110$:
;sqrtf.c:50: return ldexpf(y, n/2);
;     genAssign
	mov	dptr,#__divsint_PARM_2
	mov	a,#0x02
	movx	@dptr,a
	clr	a
	inc	dptr
	movx	@dptr,a
;     genCall
	mov	a,_bp
	add	a,#0x09
	mov	r0,a
	mov	dpl,@r0
	inc	r0
	mov	dph,@r0
	lcall	__divsint
	mov	r2,dpl
	mov	r3,dph
;     genAssign
	mov	dptr,#_ldexpf_PARM_2
	mov	a,r2
	movx	@dptr,a
	inc	dptr
	mov	a,r3
	movx	@dptr,a
;     genCall
	mov	a,_bp
	add	a,#0x05
	mov	r0,a
	mov	dpl,@r0
	inc	r0
	mov	dph,@r0
	inc	r0
	mov	b,@r0
	inc	r0
	mov	a,@r0
	lcall	_ldexpf
;     genRet
;	Peephole 191	removed redundant mov
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
	mov	r5,a
;	Peephole 238.b	removed 3 redundant moves
00111$:
	mov	sp,_bp
	pop	_bp
	ret
	.area CSEG    (CODE)
	.area CONST   (CODE)
	.area XINIT   (CODE)
