;--------------------------------------------------------
; File Created by SDCC : free open source ANSI-C Compiler
; Version 2.8.1 #5183 (Sep 24 2008) (UNIX)
; This file was generated Wed Sep 24 23:19:11 2008
;--------------------------------------------------------
	.module atan2f
	.optsdcc -mgbz80
	
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
	.globl _atan2f
;--------------------------------------------------------
;  ram data
;--------------------------------------------------------
	.area _DATA
;--------------------------------------------------------
; overlayable items in  ram 
;--------------------------------------------------------
	.area _OVERLAY
;--------------------------------------------------------
; external initialized ram data
;--------------------------------------------------------
;--------------------------------------------------------
; global & static initialisations
;--------------------------------------------------------
	.area _HOME
	.area _GSINIT
	.area _GSFINAL
	.area _GSINIT
;--------------------------------------------------------
; Home
;--------------------------------------------------------
	.area _HOME
	.area _HOME
;--------------------------------------------------------
; code
;--------------------------------------------------------
	.area _CODE
;atan2f.c:24: float atan2f(const float x, const float y)
;	---------------------------------
; Function atan2f
; ---------------------------------
_atan2f_start::
_atan2f:
	lda	sp,-12(sp)
;atan2f.c:28: if ((x==0.0) && (y==0.0))
	lda	hl,14(sp)
	ld	a,(hl+)
	or	a,(hl)
	inc	hl
	or	a,(hl)
	inc	hl
	or	a,(hl)
	jp	NZ,00102$
	inc	hl
	ld	a,(hl+)
	or	a,(hl)
	inc	hl
	or	a,(hl)
	inc	hl
	or	a,(hl)
	jp	NZ,00102$
;atan2f.c:30: errno=EDOM;
	ld	hl,#_errno
	ld	(hl),#0x21
	inc	hl
	ld	(hl),#0x00
;atan2f.c:31: return 0.0;
	ld	de,#0x0000
	ld	hl,#0x0000
	jp	00109$
00102$:
;atan2f.c:34: if(fabsf(y)>=fabsf(x))
	lda	hl,20(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,20(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	call	_fabsf
	lda	sp,4(sp)
	push	hl
	lda	hl,6(sp)
	ld	(hl),e
	inc	hl
	ld	(hl),d
	pop	de
	inc	hl
	ld	(hl),e
	inc	hl
	ld	(hl),d
	lda	hl,16(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,16(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	call	_fabsf
	lda	sp,4(sp)
	push	hl
	lda	hl,2(sp)
	ld	(hl),e
	inc	hl
	ld	(hl),d
	pop	de
	inc	hl
	ld	(hl),e
	inc	hl
	ld	(hl),d
	lda	hl,2(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,2(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,10(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,10(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	call	___fslt
	lda	sp,8(sp)
	ld	c,e
	xor	a,a
	or	a,c
	jp	NZ,00107$
;atan2f.c:36: r=atanf(x/y);
	lda	hl,20(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,20(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,20(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,20(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	call	___fsdiv
	lda	sp,8(sp)
	push	hl
	lda	hl,2(sp)
	ld	(hl),e
	inc	hl
	ld	(hl),d
	pop	de
	inc	hl
	ld	(hl),e
	inc	hl
	ld	(hl),d
	lda	hl,2(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,2(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	call	_atanf
	lda	sp,4(sp)
	push	hl
	lda	hl,10(sp)
	ld	(hl),e
	inc	hl
	ld	(hl),d
	pop	de
	inc	hl
	ld	(hl),e
	inc	hl
	ld	(hl),d
;atan2f.c:37: if(y<0.0) r+=(x>=0?PI:-PI);
	ld	hl,#0x0000
	push	hl
	ld	hl,#0x0000
	push	hl
	lda	hl,24(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,24(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	call	___fslt
	lda	sp,8(sp)
	ld	c,e
	xor	a,a
	or	a,c
	jp	Z,00108$
	ld	hl,#0x0000
	push	hl
	ld	hl,#0x0000
	push	hl
	lda	hl,20(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,20(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	call	___fslt
	lda	sp,8(sp)
	ld	c,e
	xor	a,a
	or	a,c
	sub	a,#0x01
	ld	a,#0x00
	rla
	ld	c,a
	or	a,a
	jp	Z,00111$
	lda	hl,0(sp)
	ld	(hl),#0xDB
	inc	hl
	ld	(hl),#0x0F
	inc	hl
	ld	(hl),#0x49
	inc	hl
	ld	(hl),#0x40
	jp	00112$
00111$:
	lda	hl,0(sp)
	ld	(hl),#0xDB
	inc	hl
	ld	(hl),#0x0F
	inc	hl
	ld	(hl),#0x49
	inc	hl
	ld	(hl),#0xC0
00112$:
	lda	hl,2(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,2(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,14(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,14(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	call	___fsadd
	lda	sp,8(sp)
	push	hl
	lda	hl,2(sp)
	ld	(hl),e
	inc	hl
	ld	(hl),d
	pop	de
	inc	hl
	ld	(hl),e
	inc	hl
	ld	(hl),d
	lda	hl,0(sp)
	ld	d,h
	ld	e,l
	lda	hl,8(sp)
	ld	a,(de)
	ld	(hl+),a
	inc	de
	ld	a,(de)
	ld	(hl+),a
	inc	de
	ld	a,(de)
	ld	(hl+),a
	inc	de
	ld	a,(de)
	ld	(hl),a
	jp	00108$
00107$:
;atan2f.c:41: r=-atanf(y/x);
	lda	hl,16(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,16(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,24(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,24(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	call	___fsdiv
	lda	sp,8(sp)
	push	hl
	lda	hl,2(sp)
	ld	(hl),e
	inc	hl
	ld	(hl),d
	pop	de
	inc	hl
	ld	(hl),e
	inc	hl
	ld	(hl),d
	lda	hl,2(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,2(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	call	_atanf
	lda	sp,4(sp)
	push	hl
	lda	hl,2(sp)
	ld	(hl),e
	inc	hl
	ld	(hl),d
	pop	de
	inc	hl
	ld	(hl),e
	inc	hl
	ld	(hl),d
	lda	hl,3(sp)
	ld	a,(hl)
	xor	a,#0x80
	ld	(hl),a
	lda	hl,0(sp)
	ld	a,(hl)
	ld	(hl+),a
	ld	a,(hl)
	ld	(hl+),a
	ld	a,(hl)
	ld	(hl-),a
	dec	hl
	ld	d,h
	ld	e,l
	lda	hl,8(sp)
	ld	a,(de)
	ld	(hl+),a
	inc	de
	ld	a,(de)
	ld	(hl+),a
	inc	de
	ld	a,(de)
	ld	(hl+),a
	inc	de
	ld	a,(de)
	ld	(hl),a
;atan2f.c:42: r+=(x<0.0?-HALF_PI:HALF_PI);
	ld	hl,#0x0000
	push	hl
	ld	hl,#0x0000
	push	hl
	lda	hl,20(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,20(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	call	___fslt
	lda	sp,8(sp)
	ld	c,e
	xor	a,a
	or	a,c
	jp	Z,00113$
	lda	hl,0(sp)
	ld	(hl),#0xDB
	inc	hl
	ld	(hl),#0x0F
	inc	hl
	ld	(hl),#0xC9
	inc	hl
	ld	(hl),#0xBF
	jp	00114$
00113$:
	lda	hl,0(sp)
	ld	(hl),#0xDB
	inc	hl
	ld	(hl),#0x0F
	inc	hl
	ld	(hl),#0xC9
	inc	hl
	ld	(hl),#0x3F
00114$:
	lda	hl,2(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,2(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,14(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	lda	hl,14(sp)
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
	push	hl
	call	___fsadd
	lda	sp,8(sp)
	push	hl
	lda	hl,2(sp)
	ld	(hl),e
	inc	hl
	ld	(hl),d
	pop	de
	inc	hl
	ld	(hl),e
	inc	hl
	ld	(hl),d
	lda	hl,0(sp)
	ld	d,h
	ld	e,l
	lda	hl,8(sp)
	ld	a,(de)
	ld	(hl+),a
	inc	de
	ld	a,(de)
	ld	(hl+),a
	inc	de
	ld	a,(de)
	ld	(hl+),a
	inc	de
	ld	a,(de)
	ld	(hl),a
00108$:
;atan2f.c:44: return r;
	lda	hl,8(sp)
	ld	e,(hl)
	inc	hl
	ld	d,(hl)
	inc	hl
	ld	a,(hl+)
	ld	h,(hl)
	ld	l,a
00109$:
	lda	sp,12(sp)
	ret
_atan2f_end::
	.area _CODE
	.area _CABS
