Fixed bug printing inf, moved LUT outside, documented input/output

Author: Zeda

conversion/f32toa.z80

@@ -1,6 +1,10 @@
 #ifndef included_f32toa
 #define included_f32toa
 #include "pushpop.z80"
+#include "f32_pow10_LUT.z80"
+#include "f32mul.z80"
+#include "mov4.z80"
+#include "common_str.z80"
 
 ;#define EXTERNAL_FORMAT_LEN ;Uses an external reference to get the format length
 ;#define EXTERNAL_FORMAT_LEN fmtDigits ;Use for TI-OS
@@ -36,6 +40,9 @@
 #define f32toa_x scrap
 
 f32toa:
+;Inputs:
+; HL points to the input float
+; BC points to where the string gets written.
  call pushpop
  ld e,(hl)
  inc hl
@@ -274,23 +281,6 @@ f32toa_pow10LUT_mul_sub:
  jp c,f32mul
  ret
 
-f32_pown10_LUT:
-.db $CD,$CC,$CC,$3D ;1e-1
-.db $0A,$D7,$23,$3C ;1e-2
-.db $17,$B7,$D1,$38 ;1e-4
-.db $77,$CC,$2B,$32 ;1e-8
-.db $95,$95,$E6,$24 ;1e-16
-.db $1F,$B1,$4F,$0A ;1e-32
-
-f32_pow10_LUT:
-.db $00,$00,$20,$41 ;1e1
-.db $00,$00,$C8,$42 ;1e2
-.db $00,$40,$1C,$46 ;1e4
-.db $20,$BC,$BE,$4C ;1e8
-.db $CA,$1B,$0E,$5A ;1e16
-.db $AE,$C5,$9D,$74 ;1e32
-
-
 f32toa_return_0:
  ld (hl),'0'
  inc hl
@@ -307,12 +297,12 @@ f32toa_return_infnan:
  ex de,hl
  ld hl,str_NaN
  jr nz,f32toa_return
+ ld hl,str_inf
  rr b
  jr nc,f32toa_return
  ld a,'-'
  ld (de),a
  inc de
- ld hl,str_inf
 f32toa_return:
  jp mov4
 

f32/f32_pow10_LUT.z80

@@ -0,0 +1,18 @@
+#ifndef included_f32_pow10_LUT
+#define included_f32_pow10_LUT
+f32_pown10_LUT:
+.db $CD,$CC,$CC,$3D ;1e-1
+.db $0A,$D7,$23,$3C ;1e-2
+.db $17,$B7,$D1,$38 ;1e-4
+.db $77,$CC,$2B,$32 ;1e-8
+.db $95,$95,$E6,$24 ;1e-16
+.db $1F,$B1,$4F,$0A ;1e-32
+
+f32_pow10_LUT:
+.db $00,$00,$20,$41 ;1e1
+.db $00,$00,$C8,$42 ;1e2
+.db $00,$40,$1C,$46 ;1e4
+.db $20,$BC,$BE,$4C ;1e8
+.db $CA,$1B,$0E,$5A ;1e16
+.db $AE,$C5,$9D,$74 ;1e32
+#endif