Generic fixed-point operations. More...

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Macros
#define	ADD16(a, b) ((spx_word16_t)((spx_word16_t)(a)+(spx_word16_t)(b)))

#define	ADD32(a, b) ((spx_word32_t)(a)+(spx_word32_t)(b))

#define	DIV32(a, b) (((spx_word32_t)(a))/((spx_word32_t)(b)))

#define	DIV32_16(a, b) ((spx_word16_t)(((spx_word32_t)(a))/((spx_word16_t)(b))))

#define	EXTEND32(x) ((spx_word32_t)(x))

#define	EXTRACT16(x) ((spx_word16_t)(x))

#define	MAC16_16(c, a, b) (ADD32((c),MULT16_16((a),(b))))

#define	MAC16_16_P13(c, a, b) (ADD32((c),SHR(ADD32(4096,MULT16_16((a),(b))),13)))

#define	MAC16_16_Q11(c, a, b) (ADD32((c),SHR(MULT16_16((a),(b)),11)))

#define	MAC16_16_Q13(c, a, b) (ADD32((c),SHR(MULT16_16((a),(b)),13)))

#define	MAC16_32_Q11(c, a, b) ADD32(c,ADD32(MULT16_16((a),SHR((b),11)), SHR(MULT16_16((a),((b)&0x000007ff)),11)))

#define	MAC16_32_Q15(c, a, b) ADD32(c,ADD32(MULT16_16((a),SHR((b),15)), SHR(MULT16_16((a),((b)&0x00007fff)),15)))

#define	MUL_16_32_R15(a, bh, bl) ADD32(MULT16_16((a),(bh)), SHR(MULT16_16((a),(bl)),15))

#define	MULT16_16(a, b) (((spx_word32_t)(spx_word16_t)(a))*((spx_word32_t)(spx_word16_t)(b)))

#define	MULT16_16_16(a, b) ((((spx_word16_t)(a))*((spx_word16_t)(b))))

#define	MULT16_16_P13(a, b) (SHR(ADD32(4096,MULT16_16((a),(b))),13))

#define	MULT16_16_P14(a, b) (SHR(ADD32(8192,MULT16_16((a),(b))),14))

#define	MULT16_16_P15(a, b) (SHR(ADD32(16384,MULT16_16((a),(b))),15))

#define	MULT16_16_Q11_32(a, b) (SHR(MULT16_16((a),(b)),11))

#define	MULT16_16_Q13(a, b) (SHR(MULT16_16((a),(b)),13))

#define	MULT16_16_Q14(a, b) (SHR(MULT16_16((a),(b)),14))

#define	MULT16_16_Q15(a, b) (SHR(MULT16_16((a),(b)),15))

#define	MULT16_32_P15(a, b) ADD32(MULT16_16((a),SHR((b),15)), PSHR(MULT16_16((a),((b)&0x00007fff)),15))

#define	MULT16_32_Q11(a, b) ADD32(MULT16_16((a),SHR((b),11)), SHR(MULT16_16((a),((b)&0x000007ff)),11))

#define	MULT16_32_Q12(a, b) ADD32(MULT16_16((a),SHR((b),12)), SHR(MULT16_16((a),((b)&0x00000fff)),12))

#define	MULT16_32_Q13(a, b) ADD32(MULT16_16((a),SHR((b),13)), SHR(MULT16_16((a),((b)&0x00001fff)),13))

#define	MULT16_32_Q14(a, b) ADD32(MULT16_16((a),SHR((b),14)), SHR(MULT16_16((a),((b)&0x00003fff)),14))

#define	MULT16_32_Q15(a, b) ADD32(MULT16_16((a),SHR((b),15)), SHR(MULT16_16((a),((b)&0x00007fff)),15))

#define	NEG16(x) (-(x))

#define	NEG32(x) (-(x))

#define	PDIV32(a, b) (((spx_word32_t)(a)+((spx_word16_t)(b)>>1))/((spx_word32_t)(b)))

#define	PDIV32_16(a, b) ((spx_word16_t)(((spx_word32_t)(a)+((spx_word16_t)(b)>>1))/((spx_word16_t)(b))))

#define	PSHR(a, shift) (SHR((a)+((EXTEND32(1)<<((shift))>>1)),shift))

#define	PSHR16(a, shift) (SHR16((a)+((1<<((shift))>>1)),shift))

#define	PSHR32(a, shift) (SHR32((a)+((EXTEND32(1)<<((shift))>>1)),shift))

#define	QCONST16(x, bits) ((spx_word16_t)(.5+(x)*(((spx_word32_t)1)<<(bits))))

#define	QCONST32(x, bits) ((spx_word32_t)(.5+(x)*(((spx_word32_t)1)<<(bits))))

#define	SATURATE(x, a) (((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x)))

#define	SATURATE16(x, a) (((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x)))

#define	SATURATE32(x, a) (((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x)))

#define	SATURATE32PSHR(x, shift, a)

#define	SHL(a, shift) ((spx_word32_t)(a) << (shift))

#define	SHL16(a, shift) ((a) << (shift))

#define	SHL32(a, shift) ((a) << (shift))

#define	SHR(a, shift) ((a) >> (shift))

#define	SHR16(a, shift) ((a) >> (shift))

#define	SHR32(a, shift) ((a) >> (shift))

#define	SUB16(a, b) ((spx_word16_t)(a)-(spx_word16_t)(b))

#define	SUB32(a, b) ((spx_word32_t)(a)-(spx_word32_t)(b))

#define	VSHR32(a, shift) (((shift)>0) ? SHR32(a, shift) : SHL32(a, -(shift)))

Detailed Description

Generic fixed-point operations.

Definition in file fixed_generic.h.

Macro Definition Documentation

◆ ADD16

#define ADD16	(	a,
		b
	)	((spx_word16_t)((spx_word16_t)(a)+(spx_word16_t)(b)))

Definition at line 65 of file fixed_generic.h.

◆ ADD32

#define ADD32	(	a,
		b
	)	((spx_word32_t)(a)+(spx_word32_t)(b))

Definition at line 67 of file fixed_generic.h.

◆ DIV32

#define DIV32	(	a,
		b
	)	(((spx_word32_t)(a))/((spx_word32_t)(b)))

Definition at line 107 of file fixed_generic.h.

◆ DIV32_16

#define DIV32_16	(	a,
		b
	)	((spx_word16_t)(((spx_word32_t)(a))/((spx_word16_t)(b))))

Definition at line 105 of file fixed_generic.h.

◆ EXTEND32

#define EXTEND32 ( x ) ((spx_word32_t)(x))

Definition at line 44 of file fixed_generic.h.

Referenced by cubic_coef().

◆ EXTRACT16

#define EXTRACT16 ( x ) ((spx_word16_t)(x))

Definition at line 43 of file fixed_generic.h.

Referenced by cubic_coef().

◆ MAC16_16

#define MAC16_16	(	c,
		a,
		b
	)	(ADD32((c),MULT16_16((a),(b))))

Definition at line 77 of file fixed_generic.h.

◆ MAC16_16_P13

#define MAC16_16_P13	(	c,
		a,
		b
	)	(ADD32((c),SHR(ADD32(4096,MULT16_16((a),(b))),13)))

Definition at line 92 of file fixed_generic.h.

◆ MAC16_16_Q11

#define MAC16_16_Q11	(	c,
		a,
		b
	)	(ADD32((c),SHR(MULT16_16((a),(b)),11)))

Definition at line 90 of file fixed_generic.h.

◆ MAC16_16_Q13

#define MAC16_16_Q13	(	c,
		a,
		b
	)	(ADD32((c),SHR(MULT16_16((a),(b)),13)))

Definition at line 91 of file fixed_generic.h.

◆ MAC16_32_Q11

#define MAC16_32_Q11	(	c,
		a,
		b
	)	ADD32(c,ADD32(MULT16_16((a),SHR((b),11)), SHR(MULT16_16((a),((b)&0x000007ff)),11)))

Definition at line 83 of file fixed_generic.h.

◆ MAC16_32_Q15

#define MAC16_32_Q15	(	c,
		a,
		b
	)	ADD32(c,ADD32(MULT16_16((a),SHR((b),15)), SHR(MULT16_16((a),((b)&0x00007fff)),15)))

Definition at line 87 of file fixed_generic.h.

◆ MUL_16_32_R15

#define MUL_16_32_R15	(	a,
		bh,
		bl
	)	ADD32(MULT16_16((a),(bh)), SHR(MULT16_16((a),(bl)),15))

Definition at line 103 of file fixed_generic.h.

◆ MULT16_16

#define MULT16_16	(	a,
		b
	)	(((spx_word32_t)(spx_word16_t)(a))*((spx_word32_t)(spx_word16_t)(b)))

Definition at line 75 of file fixed_generic.h.

Referenced by cubic_coef(), resampler_basic_direct_single(), and resampler_basic_interpolate_single().

◆ MULT16_16_16

#define MULT16_16_16	(	a,
		b
	)	((((spx_word16_t)(a))*((spx_word16_t)(b))))

Definition at line 72 of file fixed_generic.h.

◆ MULT16_16_P13

#define MULT16_16_P13	(	a,
		b
	)	(SHR(ADD32(4096,MULT16_16((a),(b))),13))

Definition at line 99 of file fixed_generic.h.

◆ MULT16_16_P14

#define MULT16_16_P14	(	a,
		b
	)	(SHR(ADD32(8192,MULT16_16((a),(b))),14))

Definition at line 100 of file fixed_generic.h.

◆ MULT16_16_P15

#define MULT16_16_P15	(	a,
		b
	)	(SHR(ADD32(16384,MULT16_16((a),(b))),15))

Definition at line 101 of file fixed_generic.h.

Referenced by cubic_coef().

◆ MULT16_16_Q11_32

#define MULT16_16_Q11_32	(	a,
		b
	)	(SHR(MULT16_16((a),(b)),11))

Definition at line 94 of file fixed_generic.h.

◆ MULT16_16_Q13

#define MULT16_16_Q13	(	a,
		b
	)	(SHR(MULT16_16((a),(b)),13))

Definition at line 95 of file fixed_generic.h.

◆ MULT16_16_Q14

#define MULT16_16_Q14	(	a,
		b
	)	(SHR(MULT16_16((a),(b)),14))

Definition at line 96 of file fixed_generic.h.

◆ MULT16_16_Q15

#define MULT16_16_Q15	(	a,
		b
	)	(SHR(MULT16_16((a),(b)),15))

Definition at line 97 of file fixed_generic.h.

◆ MULT16_32_P15

#define MULT16_32_P15	(	a,
		b
	)	ADD32(MULT16_16((a),SHR((b),15)), PSHR(MULT16_16((a),((b)&0x00007fff)),15))

Definition at line 85 of file fixed_generic.h.

◆ MULT16_32_Q11

#define MULT16_32_Q11	(	a,
		b
	)	ADD32(MULT16_16((a),SHR((b),11)), SHR(MULT16_16((a),((b)&0x000007ff)),11))

Definition at line 82 of file fixed_generic.h.

◆ MULT16_32_Q12

#define MULT16_32_Q12	(	a,
		b
	)	ADD32(MULT16_16((a),SHR((b),12)), SHR(MULT16_16((a),((b)&0x00000fff)),12))

Definition at line 78 of file fixed_generic.h.

◆ MULT16_32_Q13

#define MULT16_32_Q13	(	a,
		b
	)	ADD32(MULT16_16((a),SHR((b),13)), SHR(MULT16_16((a),((b)&0x00001fff)),13))

Definition at line 79 of file fixed_generic.h.

◆ MULT16_32_Q14

#define MULT16_32_Q14	(	a,
		b
	)	ADD32(MULT16_16((a),SHR((b),14)), SHR(MULT16_16((a),((b)&0x00003fff)),14))

Definition at line 80 of file fixed_generic.h.

◆ MULT16_32_Q15

#define MULT16_32_Q15	(	a,
		b
	)	ADD32(MULT16_16((a),SHR((b),15)), SHR(MULT16_16((a),((b)&0x00007fff)),15))

Definition at line 86 of file fixed_generic.h.

Referenced by resampler_basic_interpolate_single().

◆ NEG16

#define NEG16 ( x ) (-(x))

Definition at line 41 of file fixed_generic.h.

◆ NEG32

#define NEG32 ( x ) (-(x))

Definition at line 42 of file fixed_generic.h.

◆ PDIV32

#define PDIV32	(	a,
		b
	)	(((spx_word32_t)(a)+((spx_word16_t)(b)>>1))/((spx_word32_t)(b)))

Definition at line 108 of file fixed_generic.h.

Referenced by resampler_basic_interpolate_single().

◆ PDIV32_16

#define PDIV32_16	(	a,
		b
	)	((spx_word16_t)(((spx_word32_t)(a)+((spx_word16_t)(b)>>1))/((spx_word16_t)(b))))

Definition at line 106 of file fixed_generic.h.

◆ PSHR

#define PSHR	(	a,
		shift
	)	(SHR((a)+((EXTEND32(1)<<((shift))>>1)),shift))

Definition at line 61 of file fixed_generic.h.

◆ PSHR16

#define PSHR16	(	a,
		shift
	)	(SHR16((a)+((1<<((shift))>>1)),shift))

Definition at line 49 of file fixed_generic.h.

◆ PSHR32

#define PSHR32	(	a,
		shift
	)	(SHR32((a)+((EXTEND32(1)<<((shift))>>1)),shift))

Definition at line 50 of file fixed_generic.h.

Referenced by cubic_coef(), resampler_basic_direct_single(), and resampler_basic_interpolate_single().

◆ QCONST16

#define QCONST16	(	x,
		bits
	)	((spx_word16_t)(.5+(x)*(((spx_word32_t)1)<<(bits))))

Definition at line 38 of file fixed_generic.h.

Referenced by cubic_coef().

◆ QCONST32

#define QCONST32	(	x,
		bits
	)	((spx_word32_t)(.5+(x)*(((spx_word32_t)1)<<(bits))))

Definition at line 39 of file fixed_generic.h.

◆ SATURATE

#define SATURATE	(	x,
		a
	)	(((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x)))

Definition at line 62 of file fixed_generic.h.

◆ SATURATE16

#define SATURATE16	(	x,
		a
	)	(((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x)))

Definition at line 52 of file fixed_generic.h.

◆ SATURATE32

#define SATURATE32	(	x,
		a
	)	(((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x)))

Definition at line 53 of file fixed_generic.h.

◆ SATURATE32PSHR

#define SATURATE32PSHR	(	x,
		shift,
		a
	)

Value:

(((x)>=(SHL32(a,shift))) ? (a) : \
                                   (x)<=-(SHL32(a,shift)) ? -(a) : \
                                   (PSHR32(x, shift)))

Definition at line 55 of file fixed_generic.h.

Referenced by resampler_basic_direct_single(), and resampler_basic_interpolate_single().

◆ SHL

#define SHL	(	a,
		shift
	)	((spx_word32_t)(a) << (shift))

Definition at line 60 of file fixed_generic.h.

◆ SHL16

#define SHL16	(	a,
		shift
	)	((a) << (shift))

Definition at line 46 of file fixed_generic.h.

◆ SHL32

#define SHL32	(	a,
		shift
	)	((a) << (shift))

Definition at line 48 of file fixed_generic.h.

Referenced by resampler_basic_interpolate_single().

◆ SHR

#define SHR	(	a,
		shift
	)	((a) >> (shift))

Definition at line 59 of file fixed_generic.h.

◆ SHR16

#define SHR16	(	a,
		shift
	)	((a) >> (shift))

Definition at line 45 of file fixed_generic.h.

◆ SHR32

#define SHR32	(	a,
		shift
	)	((a) >> (shift))

Definition at line 47 of file fixed_generic.h.

Referenced by cubic_coef(), and resampler_basic_interpolate_single().

◆ SUB16

#define SUB16	(	a,
		b
	)	((spx_word16_t)(a)-(spx_word16_t)(b))

Definition at line 66 of file fixed_generic.h.

◆ SUB32

#define SUB32	(	a,
		b
	)	((spx_word32_t)(a)-(spx_word32_t)(b))

Definition at line 68 of file fixed_generic.h.

Referenced by cubic_coef().

◆ VSHR32

#define VSHR32	(	a,
		shift
	)	(((shift)>0) ? SHR32(a, shift) : SHL32(a, -(shift)))

Definition at line 51 of file fixed_generic.h.

Macros

Detailed Description

Macro Definition Documentation

◆ ADD16

◆ ADD32

◆ DIV32

◆ DIV32_16

◆ EXTEND32

◆ EXTRACT16

◆ MAC16_16

◆ MAC16_16_P13

◆ MAC16_16_Q11

◆ MAC16_16_Q13

◆ MAC16_32_Q11

◆ MAC16_32_Q15

◆ MUL_16_32_R15

◆ MULT16_16

◆ MULT16_16_16

◆ MULT16_16_P13

◆ MULT16_16_P14

◆ MULT16_16_P15

◆ MULT16_16_Q11_32

◆ MULT16_16_Q13

◆ MULT16_16_Q14

◆ MULT16_16_Q15

◆ MULT16_32_P15

◆ MULT16_32_Q11

◆ MULT16_32_Q12

◆ MULT16_32_Q13

◆ MULT16_32_Q14

◆ MULT16_32_Q15

◆ NEG16

◆ NEG32

◆ PDIV32

◆ PDIV32_16

◆ PSHR

◆ PSHR16

◆ PSHR32

◆ QCONST16

◆ QCONST32

◆ SATURATE

◆ SATURATE16

◆ SATURATE32

◆ SATURATE32PSHR

◆ SHL

◆ SHL16

◆ SHL32

◆ SHR

◆ SHR16

◆ SHR32

◆ SUB16

◆ SUB32

◆ VSHR32