Implemented the rest of C++20 <bit>, and added __ez80_clrsb* and __ez80_parity*

Author: ZERICO2005

src/libc/ez80_builtin.src

@@ -128,6 +128,113 @@ ___ez80_ffsi48:
 	call	__i48xor
 	jp	__i48popcnt
 
+;-------------------------------------------------------------------------------
+
+	section	.text
+
+	public	___ez80_clrsbc
+___ez80_clrsbc:
+	; unoptimized
+	ld	hl, 3
+	add	hl, sp
+	ld	a, (hl)
+	rlca
+	sbc	hl, hl
+	xor	a, l
+	rrca	
+	call	__bctlz
+	dec	a
+	ret
+
+;-------------------------------------------------------------------------------
+	
+	section	.text
+
+	public	___ez80_clrsbs
+___ez80_clrsbs:
+	; unoptimized
+	ld	hl, 3
+	add	hl, sp
+	ld	hl, (hl)
+	ld	a, h
+	rla
+	call	c, __snot
+	call	__sctlz
+	dec	a
+	ret
+
+;-------------------------------------------------------------------------------
+
+	section	.text
+
+	public	___ez80_clrsbi48
+___ez80_clrsbi48:
+	; unoptimized
+	ld	hl, 8
+	add	hl, sp
+	ld	a, (hl)
+	dec	hl
+	dec	hl
+	ld	de, (hl)
+	dec	hl
+	dec	hl
+	dec	hl
+	ld	hl, (hl)
+	rla
+	call	c, __i48not
+	call	__i48ctlz
+	dec	a
+	ret
+
+;-------------------------------------------------------------------------------
+
+	section	.text
+
+	public	___ez80_parityc
+___ez80_parityc:
+	xor	a, a
+	ld	hl, 3
+	add	hl, sp
+	or	a, (hl)
+	ld	a, 0
+	ret	pe
+	dec	a
+	ret
+
+;-------------------------------------------------------------------------------
+	
+	section	.text
+
+	public	___ez80_paritys
+___ez80_paritys:
+	; unoptimized
+	ld	hl, 3
+	add	hl, sp
+	ld	hl, (hl)
+	call	__spopcnt
+	rrca
+	sbc	a, a
+	ret
+
+;-------------------------------------------------------------------------------
+
+	section	.text
+
+	public	___ez80_parityi48
+___ez80_parityi48:
+	; unoptimized
+	ld	hl, 6
+	add	hl, sp
+	ld	de, (hl)
+	dec	hl
+	dec	hl
+	dec	hl
+	ld	hl, (hl)
+	call	__i48popcnt
+	rrca
+	sbc	a, a
+	ret
+
 ;-------------------------------------------------------------------------------
 
 	section	.text
@@ -326,11 +433,14 @@ ___ez80_rotateright48:
 
 ;-------------------------------------------------------------------------------
 
+	extern	__snot
+	extern	__i48not
 	extern	__i48xor
 	extern	__i48cmpzero
 	extern	__i48sub_1
 
 	extern	__bctlz
+	extern	__sctlz
 	extern	__i48ctlz
 
 	extern	__bpopcnt
@@ -340,4 +450,4 @@ ___ez80_rotateright48:
 	extern	__ibitrev
 	extern	__i48bitrev
 
-	extern	__frameset0
+	extern	__i48bswap

src/libc/include/ez80_builtin.h

@@ -2,6 +2,7 @@
 #define _EZ80_BUILTIN_H
 
 #include <cdefs.h>
+#include <stdbool.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -17,6 +18,14 @@ unsigned char __ez80_ffsc(unsigned char) __NOEXCEPT_CONST;
 unsigned char __ez80_ffss(unsigned short) __NOEXCEPT_CONST;
 unsigned char __ez80_ffsi48(unsigned __int48) __NOEXCEPT_CONST;
 
+unsigned char __ez80_clrsbc(unsigned char) __NOEXCEPT_CONST;
+unsigned char __ez80_clrsbs(unsigned short) __NOEXCEPT_CONST;
+unsigned char __ez80_clrsbi48(unsigned __int48) __NOEXCEPT_CONST;
+
+bool __ez80_parityc(unsigned char) __NOEXCEPT_CONST;
+bool __ez80_paritys(unsigned short) __NOEXCEPT_CONST;
+bool __ez80_parityi48(unsigned __int48) __NOEXCEPT_CONST;
+
 unsigned char __ez80_popcountc(unsigned char) __NOEXCEPT_CONST;
 unsigned char __ez80_popcounts(unsigned short) __NOEXCEPT_CONST;
 unsigned char __ez80_popcounti48(unsigned __int48) __NOEXCEPT_CONST;

src/libc/include/stdbit.h

@@ -111,14 +111,19 @@ __builtin_ffsll(x)
 
 #define stdc_count_ones_uc(x) \
 __ez80_popcountc(x)
+
 #define stdc_count_ones_us(x) \
 __ez80_popcounts(x)
+
 #define stdc_count_ones_ui(x) \
 __builtin_popcount(x)
+
 #define stdc_count_ones_ul(x) \
 __builtin_popcountl(x)
+
 #define stdc_count_ones_ui48(x) \
 __ez80_popcounti48(x)
+
 #define stdc_count_ones_ull(x) \
 __builtin_popcountll(x)
 
@@ -140,6 +145,13 @@ __builtin_popcountll(x)
 
 
 
+
+//------------------------------------------------------------------------------
+// stdc_bit_ceil
+//------------------------------------------------------------------------------
+
+
+
 //------------------------------------------------------------------------------
 // stdc_bit_floor
 //------------------------------------------------------------------------------