/* Fast printf routine for use with sdcc/mcs51
- * Copyright (c) 2001, Paul Stoffregen, paul@pjrc.com
+ * Copyright (c) 2004, Paul Stoffregen, paul@pjrc.com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
-
-// include support for 32 bit base 10 integers (%ld and %lu)
-#define LONG_INT
-
-// include support for minimum field widths (%8d, %20s)
+/******************************************************************/
+/** **/
+/** Major features. These determine what capabilities your **/
+/** comiled printf_fast will have. **/
+/** **/
+/******************************************************************/
+
+// Include support for 32 bit base 10 integers (%ld and %lu). Without
+// this, you won't be able to print 32 bit integers as base 10. They
+// will appear in hexidecimal.
+#define LONG
+
+// Include support for floating point numbers (%f). Don't forget to
+// enable LONG above, if you want to print floats greater than
+// 65535.997. You can have 6 good digits after the decimal point,
+// or an 8th if a small error is ok. +/- 2^32 to 1/10^8 isn't the
+// full dynamic range of 32 bit floats, but it covers the most
+// commonly used range. Adds about 500-600 bytes of code.
+//#define FLOAT
+
+// Include support for minimum field widths (%8d, %20s, %12.5f)
#define FIELD_WIDTH
+// Include fast integer conversion. Without this, a compact but slower
+// algorithm is used to convert integers (%d, %u, int part of %f).
+// Even the slow algorithm is much faster than a typical C implementation
+// based on repetitive division by 10. If you enable this, you get an
+// extremely fast version (only 8 table lookups and 8 adds to convert a
+// 32 bit integer), but it costs extra code space for larger lookup
+// tables and optimized non-looping code.
+#define FAST_INTEGER
+
+
+/******************************************************************/
+/** **/
+/** Minor tweaks. These provide small code savings, with **/
+/** a partial loss of functionality. **/
+/** **/
+/******************************************************************/
+
+
+// If you enabled FLOAT, enabling this replaces the normal %f float
+// output with a very compact version that always prints 4 fractional
+// digits and does not have round off. Zero will print as "0.0000",
+// and 1.999997 will print as "1.9999" (not rounded up to 2). The
+// 4th digit is not accurate (+/- 2). This simpler version also
+// avoids using 5 bytes of internal data memory. Code size is about
+// 240 bytes less.
+//#define FLOAT_FIXED4
+
+// If you used FLOAT (not FLOAT_FIXED4), this will remove the smart
+// default number of digits code. When you use "%f" without a field
+// width, normally the smart default width code chooses a good number
+// of digits based on size of the number. If you enabled FIELD_WIDTH
+// and use a number, like "%.5f", this smart default code is never
+// used anyway. Saves about 40 bytes of code.
+//#define FLOAT_DEFAULT_FRAC_DIGITS 6
+
+// If you used FLOAT (not FLOAT_FIXED4) and you do not specify a
+// field width, normally trailing zeros are trimmed. Using this
+// removes that feature (saves only a few bytes).
+//#define DO_NOT_TRIM_TRAILING_ZEROS
+
+// Omit saving and restoring registers when calling putchar(). If you
+// are desparate for a little more code space, this will give you a
+// small savings. You MUST define putchar() with #pragma callee_saves,
+// or implement it in assembly and avoid changing the registers.
+//#define PUTCHAR_CALLEE_SAVES
+
/* extern void putchar(char ); */
#ifdef FIELD_WIDTH
static bit field_width_flag;
-static bit leading_zero_flag;
static data unsigned char field_width;
#endif
+#ifdef FLOAT
+#include <float.h>
+static bit continue_float;
+#ifndef FLOAT_FIXED4
+static data unsigned char frac_field_width;
+static data unsigned char float_frac_bcd[4];
+// TODO: can float_frac_bcd be overlaid with temps used by trig functions
+#endif
+#endif
+
+#ifndef FAST_INTEGER
+#ifdef LONG
+static data unsigned int i2bcd_tmp; // slow 32 int conversion needs temp space
+#endif
+#endif
+
+
void printf_fast(code char *fmt, ...) reentrant
{
mov dpl, @r0 // dptr has address of fmt
dec r0
+
printf_main_loop:
clr a
movc a, @a+dptr // get next byte of fmt string
clr _negative_flag
#ifdef FIELD_WIDTH
clr _field_width_flag
- clr _leading_zero_flag
- mov _field_width, #0
+ mov r1, #_field_width
+ mov @r1, #0
+#endif
+#ifdef FLOAT
+ clr _continue_float
#endif
printf_format_loop:
jnc printf_nondigit2
#ifdef FIELD_WIDTH
printf_digit:
- jnz printf_digit_2
- cjne a, _field_width, printf_digit_2
- setb _leading_zero_flag
-printf_digit_2:
setb _field_width_flag
- mov r1, a
- mov a, _field_width
+ mov r2, a
+ mov a, @r1
mov b, #10
mul ab
- add a, r1
- mov _field_width, a
+ add a, r2
+ mov @r1, a
#endif
sjmp printf_format_loop
printf_nondigit1:
sjmp printf_char
printf_format_x:
- //cjne a, #'x', printf_normal
- cjne a, #120, printf_normal
+ //cjne a, #'x', printf_format_f
+ cjne a, #120, printf_format_f
ljmp printf_hex
+printf_format_f:
+#ifdef FLOAT
+ //cjne a, #'f', printf_format_dot
+ cjne a, #102, printf_format_dot
+ ljmp print_float
+#endif
+
+printf_format_dot:
+ //cjne a, #'.', printf_normal
+ cjne a, #46, printf_normal
+#ifdef FLOAT
+#ifdef FLOAT_FIXED4
+ mov r1, #ar3 // parse frac field, but discard if FIXED4
+#else
+ mov r1, #_frac_field_width
+ mov @r1, #0
+#endif
+#endif
+ sjmp printf_format_loop
+
printf_normal:
jz printf_eot
printf_char:
lcall printf_putchar
- sjmp printf_main_loop
+ ljmp printf_main_loop
printf_eot:
ljmp printf_end
+
+
/* print a string... just grab each byte with __gptrget */
/* the user much pass a 24 bit generic pointer */
#ifdef FIELD_WIDTH
jnb _field_width_flag, printf_str_loop
- clr _leading_zero_flag // never leading zeros for strings
push dpl
push dph
printf_str_fw_loop:
ljmp printf_phex_lsn
-#ifndef LONG_INT
+#ifndef LONG
printf_ld_in_hex:
//mov a, #'0'
mov a, #48
setb _negative_flag
mov a, r1 /* invert integer */
cpl a
- addc a, #1
+ add a, #1
mov r1, a
jb _short_flag, printf_uint
mov a, r2
printf_uint_ck32:
/* it's a 32 bit int... but if the upper 16 bits are zero */
/* we can treat it like a 16 bit integer and convert much faster */
-#ifdef LONG_INT
+#ifdef LONG
mov a, r3
jnz printf_uint_begin
mov a, r4
jnz printf_uint_begin
#else
mov a, r3
- jnz printf_ld_in_hex ;print long integer as hex
- mov a, r4 ;rather than just the low 16 bits
+ jnz printf_ld_in_hex // print long integer as hex
+ mov a, r4 // rather than just the low 16 bits
jnz printf_ld_in_hex
#endif
clr _long_flag
jnz printf_uint_begin
#ifdef FIELD_WIDTH
jnb _field_width_flag, printf_uint_zero
+ mov a, _field_width
+ jz printf_uint_zero
dec _field_width
lcall printf_space
#endif
//mov a, #'0'
mov a, #48
lcall printf_putchar
+#ifdef FLOAT
+ jnb _continue_float, 0001$
+ ret
+0001$:
+#endif
ljmp printf_main_loop
+
printf_uint_begin:
push dpl
push dph
lcall printf_int2bcd // bcd number in r3/r2/r7/r6/r5
+printf_uint_2:
#ifdef FIELD_WIDTH
jnb _field_width_flag, printf_uifw_end
-#ifdef LONG_INT
+#ifdef LONG
printf_uifw_32:
mov r1, #10
jnb _long_flag, printf_uifw_16
mov a, r7
anl a, #0xF0
jnz printf_uifw_sub
-#endif
+#endif // LONG
printf_uifw_16:
mov r1, #5
jb _short_flag, printf_uifw_8
jc printf_uifw_end
mov _field_width, a
-#ifdef LONG_INT
+#ifndef PUTCHAR_CALLEE_SAVES
+#ifdef LONG
push ar3
push ar2
#endif
push ar7
push ar6
push ar5
+#endif
lcall printf_space
+#ifndef PUTCHAR_CALLEE_SAVES
pop ar5
pop ar6
pop ar7
-#ifdef LONG_INT
+#ifdef LONG
pop ar2
pop ar3
#endif
-printf_uifw_end:
#endif
+printf_uifw_end:
+#endif // FIELD_WIDTH
+
+
printf_uint_doit:
jnb _negative_flag, printf_uint_pos
- //mov a, #"-"
+#ifdef PUTCHAR_CALLEE_SAVES
+ //mov a, #'-'
+ mov a, #45
+ lcall printf_putchar
+#else
+#ifdef LONG
+ push ar3
+ push ar2
+#endif
+ push ar7
+ push ar6
+ push ar5
+ //mov a, #'-'
mov a, #45
lcall printf_putchar
+ pop ar5
+ pop ar6
+ pop ar7
+#ifdef LONG
+ pop ar2
+ pop ar3
+#endif
+#endif // PUTCHAR_CALLEE_SAVES
+
printf_uint_pos:
jb _short_flag, printf_uint8
-#ifdef LONG_INT
+#ifdef LONG
jnb _long_flag, printf_uint16
printf_uint32:
push ar5
pop dph
pop dpl
sjmp printf_uint16a
-#endif
+#endif // LONG
printf_uint16:
mov dpl, r5
lcall printf_zero
pop dph
pop dpl
+#ifdef FLOAT
+ jnb _continue_float, 0002$
+ ret
+0002$:
+#endif
+ ljmp printf_main_loop
+
+
+
+
+
+
+
+
+#ifdef FLOAT
+#ifdef FLOAT_FIXED4
+ // Print a float the easy way. First, extract the integer part and
+ // use the integer printing code. Then extract the fractional part,
+ // convert each bit to 4 digit BCD, and print the BCD sum. Absolutely
+ // no field width control, always 4 digits printed past the decimal
+ // point. No round off. 1.9999987 prints as 1.9999, not 2.0000.
+print_float:
+#ifdef FIELD_WIDTH
+ jnb _field_width_flag, print_float_begin
+ mov a, _field_width
+ add a, #251
+ mov _field_width, a
+ jc print_float_begin
+ mov _field_width, #0
+#endif
+print_float_begin:
+ mov exp_b, r0 // keep r0 safe, will need it again
+ lcall printf_get_float
+ clr c
+ mov a, #158 // check for large float we can't print
+ subb a, exp_a
+ jnc print_float_size_ok
+printf_float_too_big:
+ // TODO: should print some sort of overflow error??
+ ljmp printf_format_loop
+print_float_size_ok:
+ lcall __fs_rshift_a
+ setb _continue_float
+#ifndef LONG
+ mov a, r3
+ orl a, r4
+ jnz printf_float_too_big
+#endif
+ lcall printf_uint // print the integer portion
+ //mov a, #'.'
+ mov a, #0x2E
+ lcall printf_putchar
+ // now that the integer part is printed, we need to refetch the
+ // float from the va_args and extract the fractional part
+ mov r0, exp_b
+ lcall printf_get_float
+ push ar0
+ mov a, exp_a
+ cjne a, #126, print_float_frac_lshift
+ sjmp print_float_frac // input between 0.5 to 0.9999
+print_float_frac_lshift:
+ jc print_float_frac_rshift
+ //Acc (exponent) is greater than 126 (input >= 1.0)
+ add a, #130
+ mov r5, a
+print_float_lshift_loop:
+ clr c
+ mov a, r2
+ rlc a
+ mov r2, a
+ mov a, r3
+ rlc a
+ mov r3, a
+ mov a, r4
+ rlc a
+ mov r4, a
+ djnz r5, print_float_lshift_loop
+ sjmp print_float_frac
+print_float_frac_rshift:
+ //Acc (exponent) is less than 126 (input < 0.5)
+ cpl a
+ add a, #127
+ lcall __fs_rshift_a
+print_float_frac:
+ // now we've got the fractional part, so now is the time to
+ // convert to BCD... just convert each bit to BCD using a
+ // lookup table and BCD sum them together
+ mov r7, #14
+ clr a
+ mov r6, a
+ mov r5, a
+ push dpl
+ push dph
+ mov dptr, #_frac2bcd // FLOAT_FIXED4 version (14 entries)
+print_float_frac_loop:
+ mov a, r3
+ rlc a
+ mov r3, a
+ mov a, r4
+ rlc a
+ mov r4, a
+ jnc print_float_frac_skip
+ clr a
+ movc a, @a+dptr
+ add a, r5
+ da a
+ mov r5, a
+ mov a, #1
+ movc a, @a+dptr
+ addc a, r6
+ da a
+ mov r6, a
+print_float_frac_skip:
+ inc dptr
+ inc dptr
+ djnz r7, print_float_frac_loop
+ // the BCD sum is in dptr, so all we've got to do is output
+ // all 4 digits. No trailing zero suppression, no nice round
+ // off (impossible to change the integer part since we already
+ // printed it).
+ mov dph, r6
+ mov dpl, r5
+ setb _print_zero_flag
+ mov a, dph
+ lcall printf_phex_msn
+ mov a, dph
+ lcall printf_phex_lsn
+ mov a, dpl
+ lcall printf_phex_msn
+ mov a, dpl
+ lcall printf_phex_lsn
+ pop dph
+ pop dpl
+ pop ar0
+ ljmp printf_main_loop
+
+#else // not FLOAT_FIXED4
+
+
+
+
+print_float:
+ // Print a float the not-as-easy way, with a configurable number of
+ // fractional digits (up to 8) and proper round-off (up to 7 digits).
+ // First, extract the fractional part, convert to BCD, and then add
+ // the scaled round-off. Store the rounded fractional digits and
+ // their carry. Then extract the integer portion, increment it if
+ // the rounding caused a carry. Use the integer printing to output
+ // the integer, and then output the stored fractional digits. This
+ // approach requires 5 bytes of internal RAM to store the 8 fractional
+ // digits and the number of them we'll actually print. This code is
+ // a couple hundred bytes larger and a bit slower than the FIXED4
+ // version, but it gives very nice results.
+print_float_1:
+#ifdef FIELD_WIDTH
+ jnb _field_width_flag, print_float_default_width
+ // The caller specified exact field width, so use it. Need to
+ // convert the whole float digits into the integer portion only.
+ mov a, _field_width
+ setb c
+ subb a, _frac_field_width
+ mov _field_width, a
+ jnc print_float_begin
+ mov _field_width, #0
+ sjmp print_float_begin
+#endif
+print_float_default_width:
+ // The caller didn't specify field width (or FIELD_WIDTH is
+ // not defined so it's ignored). We've still got to know
+ // how many fractional digits are going to print, so we can
+ // round off properly.
+#ifdef FLOAT_DEFAULT_FRAC_DIGITS
+ mov _frac_field_width, #FLOAT_DEFAULT_FRAC_DIGITS
+#else
+ // default fractional field width (between 0 to 7)
+ // attempt to scale the default number of fractional digits
+ // based on the magnitude of the float
+ mov ar1, r0 // r0 points to first byte of float
+ dec r1 // r1 points to second byte of float
+ mov r6, dpl
+ mov r7, dph
+ mov dptr, #_float_range_table
+ mov r5, #7
+print_float_default_loop:
+ clr a
+ movc a, @a+dptr
+ add a, @r1
+ inc dptr
+ clr a
+ movc a, @a+dptr
+ addc a, @r0
+ jnc print_float_default_done
+ inc dptr
+ djnz r5, print_float_default_loop
+print_float_default_done:
+ mov _frac_field_width, r5
+ mov dpl, r6
+ mov dph, r7
+#endif // not FLOAT_DEFAULT_FRAC_DIGITS
+
+print_float_begin:
+ push ar0 // keep r0 safe, will need it again
+ lcall printf_get_float
+ mov a, exp_a
+ cjne a, #126, print_float_frac_lshift
+ sjmp print_float_frac // input between 0.5 to 0.9999
+
+print_float_frac_lshift:
+ jc print_float_frac_rshift
+ //Acc (exponent) is greater than 126 (input >= 1.0)
+ add a, #130
+ mov r5, a
+print_float_lshift_loop:
+ clr c
+ mov a, r2
+ rlc a
+ mov r2, a
+ mov a, r3
+ rlc a
+ mov r3, a
+ mov a, r4
+ rlc a
+ mov r4, a
+ djnz r5, print_float_lshift_loop
+ sjmp print_float_frac
+print_float_frac_rshift:
+ //Acc (exponent) is less than 126 (input < 0.5)
+ cpl a
+ add a, #127
+ lcall __fs_rshift_a
+print_float_frac:
+ // Convert the fraction in r4/r3/r2/r1 into 8 BCD digits in exb_b/r7/r6/r5
+ mov b, #27
+ clr a
+ mov exp_b, a
+ mov r7, a
+ mov r6, a
+ mov r5, a
+ push dpl
+ push dph
+ mov dptr, #_frac2bcd // FLOAT version (27 entries)
+print_float_frac_loop:
+ mov a, r1
+ rlc a
+ mov r1, a
+ mov a, r2
+ rlc a
+ mov r2, a
+ mov a, r3
+ rlc a
+ mov r3, a
+ mov a, r4
+ rlc a
+ mov r4, a
+ jnc print_float_frac_skip
+ clr a
+ movc a, @a+dptr
+ add a, r5
+ da a
+ mov r5, a
+ mov a, #1
+ movc a, @a+dptr
+ addc a, r6
+ da a
+ mov r6, a
+ mov a, #2
+ movc a, @a+dptr
+ addc a, r7
+ da a
+ mov r7, a
+ mov a, #3
+ movc a, @a+dptr
+ addc a, exp_b
+ da a
+ mov exp_b, a
+print_float_frac_skip:
+ inc dptr
+ inc dptr
+ inc dptr
+ inc dptr
+ djnz b, print_float_frac_loop
+ pop dph
+ pop dpl
+print_float_frac_roundoff:
+ // Now it's time to round-off the BCD digits to the desired precision.
+ clr a
+ mov r4, #0x50 // r4/r3/r2/r1 = 0.5 (bcd rounding)
+ mov r3, a
+ mov r2, a
+ mov r1, a
+ mov a, _frac_field_width
+ rl a
+ rl a
+ anl a, #0xFC
+ lcall __fs_rshift_a // divide r4/r3/r2/r1 by 10^frac_field_width
+ mov a, r5
+ add a, r1 // add rounding to fractional part
+ da a
+ mov _float_frac_bcd+3, a // and store it for later use
+ mov a, r6
+ addc a, r2
+ da a
+ mov _float_frac_bcd+2, a
+ mov a, r7
+ addc a, r3
+ da a
+ mov _float_frac_bcd+1, a
+ mov a, exp_b
+ addc a, r4
+ da a
+ mov _float_frac_bcd+0, a
+ mov sign_b, c // keep fractional carry in sign_b
+print_float_int:
+ // Time to work on the integer portion... fetch the float again, check
+ // size (exponent), scale to integer, add the fraction's carry, and
+ // let the integer printing code do all the work.
+ pop ar0
+ lcall printf_get_float
+ push ar0
+ clr c
+ mov a, #158 // check for large float we can't print
+ subb a, exp_a
+ jnc print_float_size_ok
+printf_float_too_big:
+ // TODO: should print some sort of overflow error??
+ ljmp printf_format_loop
+print_float_size_ok:
+ lcall __fs_rshift_a
+ jnb sign_b, print_float_do_int
+ // if we get here, the fractional round off caused the
+ // integer part to increment. Add 1 for a proper result
+ mov a, r1
+ add a, #1
+ mov r1, a
+ clr a
+ addc a, r2
+ mov r2, a
+#ifdef LONG
+ clr a
+ addc a, r3
+ mov r3, a
+ clr a
+ addc a, r4
+ mov r4, a
+#endif
+ jc printf_float_too_big
+print_float_do_int:
+#ifndef LONG
+ mov a, r3
+ orl a, r4
+ jnz printf_float_too_big
+#endif
+ setb _continue_float
+ lcall printf_uint // print the integer portion
+
+
+print_float_frac_width:
+ // Now all we have to do is output the fractional digits that
+ // were previous computed and stored in memory.
+#ifdef FIELD_WIDTH
+ jb _field_width_flag, print_float_do_frac
+#endif
+#ifndef DO_NOT_TRIM_TRAILING_ZEROS
+ // if the user did not explicitly set a
+ // field width, trim off trailing zeros
+print_float_frac_trim:
+ mov a, _frac_field_width
+ jz print_float_do_frac
+ lcall get_float_frac_digit
+ jnz print_float_do_frac
+ djnz _frac_field_width, print_float_frac_trim
+#endif
+
+print_float_do_frac:
+ mov a, _frac_field_width
+ jz print_float_done
+ //mov a, #'.'
+ mov a, #0x2E
+ lcall printf_putchar
+ mov r0, #0
+ setb _print_zero_flag
+print_float_do_frac_loop:
+ inc r0
+ mov a, r0
+ lcall get_float_frac_digit
+ lcall printf_phex_lsn
+ mov a, r0
+ cjne a, _frac_field_width, print_float_do_frac_loop
+
+print_float_done:
+ pop ar0
ljmp printf_main_loop
+ // acc=1 for tenths, acc=2 for hundredths, etc
+get_float_frac_digit:
+ dec a
+ clr c
+ rrc a
+ mov psw.5, c
+ add a, #_float_frac_bcd
+ mov r1, a
+ mov a, @r1
+ jb psw.5, get_float_frac_digit_done
+ swap a
+get_float_frac_digit_done:
+ anl a, #15
+ ret
+
+
+
+
+#endif // end of normal FLOAT code (not FLOAT_FIXED4)
+
+
+// These helper functions are used, regardless of which type of
+// FLOAT code is used.
+
+#if 0
+pm2_print_float:
+ mov a, exp_a
+ lcall pm2_entry_phex
+ mov a, #0x20
+ lcall pm2_entry_cout
+ lcall _print_r4321
+ mov a, #0x20
+ lcall pm2_entry_cout
+ ret
+#endif
+
+ // Fetch a float from the va_args and put it into
+ // exp_a/r4/r3/r2 and also clear r1 and preset
+ // the flags
+printf_get_float:
+ mov a, @r0
+ dec r0
+ mov r1, a
+ mov a, @r0
+ dec r0
+ mov r4, a
+ rlc a
+ mov a, r1
+ rlc a
+ mov _negative_flag, c
+ mov exp_a, a
+ jz printf_get_float_2
+ orl ar4, #0x80
+printf_get_float_2:
+ mov a, @r0
+ dec r0
+ mov r3, a
+ mov a, @r0
+ dec r0
+ mov r2, a
+ mov r1, #0
+ clr _short_flag
+ setb _long_flag
+ ret
+#endif // FLOAT
+
+
+
+
+
-
+#ifdef FAST_INTEGER
/* convert binary number in r4/r3/r2/r1 into bcd packed number
* in r3/r2/r7/r6/r5. The input number is destroyed in the
printf_int2bcd:
mov a, r1
- anl a, #0x0F
- mov dptr, #_int2bcd_0
- movc a, @a+dptr
- mov r5, a
-
- mov a, r1
+ mov b, #100
+ div ab
+ mov r6, a
+ mov a, #10
+ xch a, b
+ div ab
swap a
- anl a, #0x0F
- mov r1, a // recycle r1 for holding nibble
- mov dptr, #_int2bcd_1
- movc a, @a+dptr
- add a, r5
- da a
+ orl a, b
mov r5, a
- mov a, r1
- orl a, #16
- movc a, @a+dptr
- addc a, #0
- da a
- mov r6, a
jnb _short_flag, printf_i2bcd_16 // if 8 bit int, we're done
ret
printf_i2bcd_32:
-#ifdef LONG_INT
+#ifdef LONG
mov a, r3
anl a, #0x0F
mov r1, a
addc a, r3
da a
mov r3, a
-#endif
+#endif // LONG
+ ret
+
+
+#else // not FAST_INTEGER
+
+ /* convert binary number in r4/r3/r2/r1 into bcd packed number
+ * in r3/r2/r7/r6/r5. The input number is destroyed in the
+ * process, to avoid needing extra memory for the result (and
+ * r1 gets used for temporary storage). dptr is overwritten,
+ * but r0 is not changed.
+ */
+
+#ifdef LONG
+
+printf_int2bcd:
+ mov a, #8
+ jb _short_flag, printf_int2bcd_begin
+ mov a, #16
+ jnb _long_flag, printf_int2bcd_begin
+ mov a, #32
+printf_int2bcd_begin:
+ mov b, a
+ clr a
+ mov r5, a
+ mov r6, a
+ mov r7, a
+ mov (_i2bcd_tmp + 0), a
+ mov (_i2bcd_tmp + 1), a
+ mov dptr, #_int2bcd
+printf_i2bcd_loop:
+ mov a, r4
+ rrc a
+ mov r4, a
+ mov a, r3
+ rrc a
+ mov r3, a
+ mov a, r2
+ rrc a
+ mov r2, a
+ mov a, r1
+ rrc a
+ mov r1, a
+ jnc print_i2bcd_skip
+ clr a
+ movc a, @a+dptr
+ add a, r5
+ da a
+ mov r5, a
+ mov a, #1
+ movc a, @a+dptr
+ addc a, r6
+ da a
+ mov r6, a
+ mov a, #2
+ movc a, @a+dptr
+ addc a, r7
+ da a
+ mov r7, a
+ mov a, #3
+ movc a, @a+dptr
+ addc a, (_i2bcd_tmp + 0)
+ da a
+ mov (_i2bcd_tmp + 0), a
+ mov a, #4
+ movc a, @a+dptr
+ addc a, (_i2bcd_tmp + 1)
+ da a
+ mov (_i2bcd_tmp + 1), a
+print_i2bcd_skip:
+ inc dptr
+ inc dptr
+ inc dptr
+ inc dptr
+ inc dptr
+ djnz b, printf_i2bcd_loop
+ mov r2, (_i2bcd_tmp + 0)
+ mov r3, (_i2bcd_tmp + 1)
ret
+#else // not LONG
+
+printf_int2bcd:
+ mov a, #8
+ jb _short_flag, printf_int2bcd_begin
+ mov a, #16
+printf_int2bcd_begin:
+ mov b, a
+ clr a
+ mov r5, a
+ mov r6, a
+ mov r7, a
+ mov dptr, #_int2bcd
+printf_i2bcd_loop:
+ mov a, r2
+ rrc a
+ mov r2, a
+ mov a, r1
+ rrc a
+ mov r1, a
+ jnc printf_i2bcd_add_skip
+ clr a
+ movc a, @a+dptr
+ add a, r5
+ da a
+ mov r5, a
+ mov a, #1
+ movc a, @a+dptr
+ addc a, r6
+ da a
+ mov r6, a
+ mov a, #2
+ movc a, @a+dptr
+ addc a, r7
+ da a
+ mov r7, a
+printf_i2bcd_add_skip:
+ inc dptr
+ inc dptr
+ inc dptr
+ djnz b, printf_i2bcd_loop
+ ret
+
+#endif // not LONG
+
+
+#endif // not FAST_INTEGER
+
+
+
+
+
+
+
+
+
+
printf_space_loop:
//mov a, #' '
mov a, #32
- jnb _leading_zero_flag, printf_space_output
- //mov a, #'0'
- mov a, #48
-printf_space_output:
lcall printf_putchar
dec _field_width
printf_space:
addc a, #0x40
da a
printf_putchar:
+#ifdef PUTCHAR_CALLEE_SAVES
+ push dph
+ push dpl
+ mov dpl, a
+ lcall _putchar
+ pop dpl
+ pop dph
+#else
push dph
push dpl
push ar0
pop ar0
pop dpl
pop dph
+#endif
printf_ret:
ret
}
+#ifdef FAST_INTEGER
/*
* #! /usr/bin/perl
* for ($d=0; $d < 8; $d++) {
* }
*/
-
+#if 0
code unsigned char int2bcd_0[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15};
0x28, 0x44, 0x60, 0x76, 0x92, 0x08, 0x24, 0x40,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02};
+#endif
code unsigned char int2bcd_2[] = {
0x00, 0x56, 0x12, 0x68, 0x24, 0x80, 0x36, 0x92,
0x00, 0x00, 0x00, 0x01, 0x01, 0x02, 0x02, 0x02,
0x03, 0x03, 0x04, 0x04, 0x04, 0x05, 0x05, 0x06};
-#ifdef LONG_INT
+#ifdef LONG
code unsigned char int2bcd_4[] = {
0x00, 0x36, 0x72, 0x08, 0x44, 0x80, 0x16, 0x52,
0x88, 0x24, 0x60, 0x96, 0x32, 0x68, 0x04, 0x40,
0x47, 0x15, 0x84, 0x52, 0x21, 0x89, 0x58, 0x26,
0x00, 0x02, 0x05, 0x08, 0x10, 0x13, 0x16, 0x18,
0x21, 0x24, 0x26, 0x29, 0x32, 0x34, 0x37, 0x40};
+#endif // LONG
+
+#else // not FAST_INTEGER
+
+/*
+ * #! /usr/bin/perl
+ * print "code unsigned char int2bcd[] = {\n";
+ * for ($i=0, $n=1; $i<32; $i++, $n*=2) {
+ * $r = sprintf "%010u", $n;
+ * $r =~ /([0-9][0-9])([0-9][0-9])([0-9][0-9])([0-9][0-9])([0-9][0-9])/;
+ * printf "0x%02d, 0x%02d, 0x%02d, 0x%02d, 0x%02d", $5, $4, $3, $2, $1;
+ * print ',' if $i < 31;
+ * printf "\t\t// %10u\n", $n;
+ * }
+ * print "}\ncode unsigned char int2bcd[] = {\n";
+ * for ($i=0, $n=1; $i<16; $i++, $n*=2) {
+ * $r = sprintf "%06u", $n;
+ * $r =~ /([0-9][0-9])([0-9][0-9])([0-9][0-9])/;
+ * printf "0x%02d, 0x%02d, 0x%02d", $3, $2, $1;
+ * print ',' if $i < 15;
+ * printf "\t\t// %10u\n", $n;
+ * }
+ * print "};\n";
+*/
+
+#ifdef LONG
+code unsigned char int2bcd[] = {
+0x01, 0x00, 0x00, 0x00, 0x00, // 1
+0x02, 0x00, 0x00, 0x00, 0x00, // 2
+0x04, 0x00, 0x00, 0x00, 0x00, // 4
+0x08, 0x00, 0x00, 0x00, 0x00, // 8
+0x16, 0x00, 0x00, 0x00, 0x00, // 16
+0x32, 0x00, 0x00, 0x00, 0x00, // 32
+0x64, 0x00, 0x00, 0x00, 0x00, // 64
+0x28, 0x01, 0x00, 0x00, 0x00, // 128
+0x56, 0x02, 0x00, 0x00, 0x00, // 256
+0x12, 0x05, 0x00, 0x00, 0x00, // 512
+0x24, 0x10, 0x00, 0x00, 0x00, // 1024
+0x48, 0x20, 0x00, 0x00, 0x00, // 2048
+0x96, 0x40, 0x00, 0x00, 0x00, // 4096
+0x92, 0x81, 0x00, 0x00, 0x00, // 8192
+0x84, 0x63, 0x01, 0x00, 0x00, // 16384
+0x68, 0x27, 0x03, 0x00, 0x00, // 32768
+0x36, 0x55, 0x06, 0x00, 0x00, // 65536
+0x72, 0x10, 0x13, 0x00, 0x00, // 131072
+0x44, 0x21, 0x26, 0x00, 0x00, // 262144
+0x88, 0x42, 0x52, 0x00, 0x00, // 524288
+0x76, 0x85, 0x04, 0x01, 0x00, // 1048576
+0x52, 0x71, 0x09, 0x02, 0x00, // 2097152
+0x04, 0x43, 0x19, 0x04, 0x00, // 4194304
+0x08, 0x86, 0x38, 0x08, 0x00, // 8388608
+0x16, 0x72, 0x77, 0x16, 0x00, // 16777216
+0x32, 0x44, 0x55, 0x33, 0x00, // 33554432
+0x64, 0x88, 0x10, 0x67, 0x00, // 67108864
+0x28, 0x77, 0x21, 0x34, 0x01, // 134217728
+0x56, 0x54, 0x43, 0x68, 0x02, // 268435456
+0x12, 0x09, 0x87, 0x36, 0x05, // 536870912
+0x24, 0x18, 0x74, 0x73, 0x10, // 1073741824
+0x48, 0x36, 0x48, 0x47, 0x21 // 2147483648
+};
+#else // not LONG
+code unsigned char int2bcd[] = {
+0x01, 0x00, 0x00, // 1
+0x02, 0x00, 0x00, // 2
+0x04, 0x00, 0x00, // 4
+0x08, 0x00, 0x00, // 8
+0x16, 0x00, 0x00, // 16
+0x32, 0x00, 0x00, // 32
+0x64, 0x00, 0x00, // 64
+0x28, 0x01, 0x00, // 128
+0x56, 0x02, 0x00, // 256
+0x12, 0x05, 0x00, // 512
+0x24, 0x10, 0x00, // 1024
+0x48, 0x20, 0x00, // 2048
+0x96, 0x40, 0x00, // 4096
+0x92, 0x81, 0x00, // 8192
+0x84, 0x63, 0x01, // 16384
+0x68, 0x27, 0x03 // 32768
+};
+#endif // not LONG
+
+#endif // not FAST_INTEGER
+
+
+
+
+#ifdef FLOAT
+#ifndef FLOAT_FIXED4
+
+/*
+ * #! /usr/bin/perl
+ * for ($i=0, $f=0.5; $i<24; $i++) {
+ * $r = sprintf "%.8f", $f;
+ * $r =~ /0\.([0-9][0-9])([0-9][0-9])([0-9][0-9])([0-9][0-9])/;
+ * printf "0x%02d, 0x%02d, 0x%02d, 0x%02d", $4, $3, $2, $1;
+ * print ',' if $i < 23;
+ * $sum += $r;
+ * printf "\t\t// %.15f %.8f\n", $f, $sum;
+ * $f /= 2;
+ * }
+ */
+
+code unsigned char frac2bcd[] = {
+0x00, 0x00, 0x00, 0x50, // 0.500000000000000 0.50000000
+0x00, 0x00, 0x00, 0x25, // 0.250000000000000 0.75000000
+0x00, 0x00, 0x50, 0x12, // 0.125000000000000 0.87500000
+0x00, 0x00, 0x25, 0x06, // 0.062500000000000 0.93750000
+0x00, 0x50, 0x12, 0x03, // 0.031250000000000 0.96875000
+0x00, 0x25, 0x56, 0x01, // 0.015625000000000 0.98437500
+0x50, 0x12, 0x78, 0x00, // 0.007812500000000 0.99218750
+0x25, 0x06, 0x39, 0x00, // 0.003906250000000 0.99609375
+0x12, 0x53, 0x19, 0x00, // 0.001953125000000 0.99804687
+0x56, 0x76, 0x09, 0x00, // 0.000976562500000 0.99902343
+0x28, 0x88, 0x04, 0x00, // 0.000488281250000 0.99951171
+0x14, 0x44, 0x02, 0x00, // 0.000244140625000 0.99975585
+0x07, 0x22, 0x01, 0x00, // 0.000122070312500 0.99987792
+0x04, 0x61, 0x00, 0x00, // 0.000061035156250 0.99993896
+0x52, 0x30, 0x00, 0x00, // 0.000030517578125 0.99996948
+0x26, 0x15, 0x00, 0x00, // 0.000015258789062 0.99998474
+0x63, 0x07, 0x00, 0x00, // 0.000007629394531 0.99999237
+0x81, 0x03, 0x00, 0x00, // 0.000003814697266 0.99999618
+0x91, 0x01, 0x00, 0x00, // 0.000001907348633 0.99999809
+0x95, 0x00, 0x00, 0x00, // 0.000000953674316 0.99999904
+0x48, 0x00, 0x00, 0x00, // 0.000000476837158 0.99999952
+0x24, 0x00, 0x00, 0x00, // 0.000000238418579 0.99999976
+0x12, 0x00, 0x00, 0x00, // 0.000000119209290 0.99999988
+0x06, 0x00, 0x00, 0x00, // 0.000000059604645 0.99999994
+0x03, 0x00, 0x00, 0x00, // 0.000000029802322 0.99999997
+0x01, 0x00, 0x00, 0x00, // 0.000000014901161 0.99999998
+0x01, 0x00, 0x00, 0x00 // 0.000000007450581 0.99999999
+};
+
+#ifndef FLOAT_DEFAULT_FRAC_DIGITS
+// TODO: Perhaps these should be tweaked a bit to take round up
+// effects into account... or maybe give more default digits??
+// Range #digits
+// 0.0001 - 0.0009999 7
+// 0.001 - 0.009999 6 0.001 = 0x3A83126F 3A83
+// 0.01 - 0.09999 5 0.01 = 0x3C23D70A 3C23
+// 0.1 - 9.9999 4 0.1 = 0x3DCCCCCD, 3DCC
+// 10.0 - 99.99 3 10.0 = 0x41200000 4120
+// 100.0 - 999.99 2 100.0 = 0x42C80000 42C8
+// 1000 - 9999.9 1 1000 = 0x447A0000 447A
+// 10000+ 0 10000 = 0x461C4000 461C
+code unsigned int float_range_table[] = {
+65536 - 0x3A83,
+65536 - 0x3C23,
+65536 - 0x3DCC,
+65536 - 0x4120,
+65536 - 0x42C8,
+65536 - 0x447A,
+65536 - 0x461C
+};
#endif
+#else // using FLOAT_FIXED4
+
+/*
+* #! /usr/bin/perl
+* for ($i=0, $f=0.5; $i<14; $i++) {
+* $r = sprintf "%.4f", $f;
+* $r =~ /0\.([0-9][0-9])([0-9][0-9])/;
+* printf "0x%02d, 0x%02d", $2, $1;
+* print ',' if $i < 13;
+* $sum += $r;
+* printf "\t\t// %.15f %.4f\n", $f, $sum;
+* $f /= 2;
+* }
+*/
+
+code unsigned char frac2bcd[] = {
+0x00, 0x50, // 0.500000000000000 0.5000
+0x00, 0x25, // 0.250000000000000 0.7500
+0x50, 0x12, // 0.125000000000000 0.8750
+0x25, 0x06, // 0.062500000000000 0.9375
+0x12, 0x03, // 0.031250000000000 0.9687
+0x56, 0x01, // 0.015625000000000 0.9843
+0x78, 0x00, // 0.007812500000000 0.9921
+0x39, 0x00, // 0.003906250000000 0.9960
+0x20, 0x00, // 0.001953125000000 0.9980
+0x10, 0x00, // 0.000976562500000 0.9990
+0x05, 0x00, // 0.000488281250000 0.9995
+0x02, 0x00, // 0.000244140625000 0.9997
+0x01, 0x00, // 0.000122070312500 0.9998
+0x01, 0x00 // 0.000061035156250 0.9999
+};
+
+#endif // FLOAT_FIXED4
+#endif // FLOAT
+
+
+
projects / fw / sdcc / commitdiff