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bits.h
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bits.h
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#pragma once
// NB: using e.g. "Bn" here instead of "BTn" conflicts with system include files
#define BT0 0x00000001
#define BT1 0x00000002
#define BT2 0x00000004
#define BT3 0x00000008
#define BT4 0x00000010
#define BT5 0x00000020
#define BT6 0x00000040
#define BT7 0x00000080
#define BT8 0x00000100
#define BT9 0x00000200
#define BT10 0x00000400
#define BT11 0x00000800
#define BT12 0x00001000
#define BT13 0x00002000
#define BT14 0x00004000
#define BT15 0x00008000
#define BT16 0x00010000
#define BT17 0x00020000
#define BT18 0x00040000
#define BT19 0x00080000
#define BT20 0x00100000
#define BT31 0x80000000
// bits
#define b0(w) (((w) >> 0) & 1)
#define b1(w) (((w) >> 1) & 1)
#define b2(w) (((w) >> 2) & 1)
#define b3(w) (((w) >> 3) & 1)
#define b4(w) (((w) >> 4) & 1)
#define b5(w) (((w) >> 5) & 1)
#define b6(w) (((w) >> 6) & 1)
#define b7(w) (((w) >> 7) & 1)
#define b8(w) (((w) >> 8) & 1)
#define b9(w) (((w) >> 9) & 1)
#define b10(w) (((w) >> 10) & 1)
#define b11(w) (((w) >> 11) & 1)
#define b12(w) (((w) >> 12) & 1)
#define b13(w) (((w) >> 13) & 1)
#define b14(w) (((w) >> 14) & 1)
#define b15(w) (((w) >> 15) & 1)
#define b16(w) (((w) >> 16) & 1)
#define b17(w) (((w) >> 17) & 1)
#define b18(w) (((w) >> 18) & 1)
#define b19(w) (((w) >> 19) & 1)
#define b20(w) (((w) >> 20) & 1)
#define b31(w) (((w) >> 31) & 1)
#define bn(w,b) ( ((w) & (1 << (b)))? 1:0 )
#define bf(f,s,e) ( ((f) >> (e)) & ((1 << ((s)-(e)+1)) - 1) )
#define bf64(f,s,e) ( ((f) >> (e)) & ((1LL << ((s)-(e)+1)) - 1LL) )
#define b7_0(w) ((w) & H8)
#define b15_8(w) (((w) >> 8) & H8)
#define BIT(w,b) bn(w,b)
#define BIS(w,b) (w) |= 1 << (b)
#define BIC(w,b) (w) &= ~(1 << (b))
#define BIW(w,b) ( ((w) & ~(1 << (b))) | (1 << (b)) )
// field combine
#define FC2(f1,s1, f0,s0) \
((f1) << (s1) | (f0) << (s0))
#define FC3(f2,s2, f1,s1, f0,s0) \
((f2) << (s2) | (f1) << (s1) | (f0) << (s0))
#define FC4(f3,s3, f2,s2, f1,s1, f0,s0) \
((f3) << (s3) | (f2) << (s2) | (f1) << (s1) | (f0) << (s0))
#define FC5(f4,s4, f3,s3, f2,s2, f1,s1, f0,s0) \
((f4) << (s4) | (f3) << (s3) | (f2) << (s2) | (f1) << (s1) | (f0) << (s0))
#define FC6(f5,s5, f4,s4, f3,s3, f2,s2, f1,s1, f0,s0) \
((f5) << (s5) | (f4) << (s4) | (f3) << (s3) | (f2) << (s2) | (f1) << (s1) | (f0) << (s0))
#define FC7(f6,s6, f5,s5, f4,s4, f3,s3, f2,s2, f1,s1, f0,s0) \
((f6) << (s6) | (f5) << (s5) | (f4) << (s4) | (f3) << (s3) | (f2) << (s2) | (f1) << (s1) | (f0) << (s0))
#define FC8(f7,s7, f6,s6, f5,s5, f4,s4, f3,s3, f2,s2, f1,s1, f0,s0) \
((f7) << (s7) | (f6) << (s6) | (f5) << (s5) | (f4) << (s4) | (f3) << (s3) | (f2) << (s2) | (f1) << (s1) | (f0) << (s0))
#define m0(w) ((w)? BT0 : 0)
#define m1(w) ((w)? BT1 : 0)
#define m2(w) ((w)? BT2 : 0)
#define m3(w) ((w)? BT3 : 0)
#define m4(w) ((w)? BT4 : 0)
#define m5(w) ((w)? BT5 : 0)
#define m6(w) ((w)? BT6 : 0)
#define m7(w) ((w)? BT7 : 0)
#define m8(w) ((w)? BT8 : 0)
#define m9(w) ((w)? BT9 : 0)
#define m10(w) ((w)? BT10 : 0)
#define m11(w) ((w)? BT11 : 0)
#define m12(w) ((w)? BT12 : 0)
#define m13(w) ((w)? BT13 : 0)
#define m14(w) ((w)? BT14 : 0)
#define m15(w) ((w)? BT15 : 0)
#define m16(w) ((w)? BT16 : 0)
#define m17(w) ((w)? BT17 : 0)
#define m18(w) ((w)? BT18 : 0)
#define m19(w) ((w)? BT19 : 0)
#define m20(w) ((w)? BT20 : 0)
#define m31(w) ((w)? BT31 : 0)
// mask field
#define mf(s,e) ( ((1 << (s+1)) - 1) & ~((1 << (e)) - 1) )
// bit field set
#define bfs(dst,s,e,src) ( ((dst) & ~mf(s,e)) | ((src) << (e)) )
// bit set
#define bset_v(dst,v,src) ( ((dst) & ~(v)) | (((src) & (v))? (v) : 0) )
#define bset_n(dst,b,src) ( ((dst) & ~mf(b,b)) | (((src) & (1 << (b)))? (1 << (b)) : 0) )
// black on color unless otherwise noted
#define RED "\e[97m\e[101m" // white on red
#define YELLOW "\e[103m"
#define GREEN "\e[102m"
#define CYAN "\e[106m"
#define BLUE "\e[97m\e[104m" // white on blue
#define MAGENTA "\e[97m\e[105m" // white on magenta
#define GREY "\e[47m"
#define NORM "\e[m"
#define NONL " \e[m\n"