85  * result = arg
87 static inline struct fixed31_32 dc_fixpt_from_int(int arg)  in dc_fixpt_from_int()  argument
91 	res.value = (long long) arg << FIXED31_32_BITS_PER_FRACTIONAL_PART;  in dc_fixpt_from_int()
103  * result = -arg
105 static inline struct fixed31_32 dc_fixpt_neg(struct fixed31_32 arg)  in dc_fixpt_neg()  argument
109 	res.value = -arg.value;  in dc_fixpt_neg()
116  * result = abs(arg) := (arg >= 0) ? arg : -arg
118 static inline struct fixed31_32 dc_fixpt_abs(struct fixed31_32 arg)  in dc_fixpt_abs()  argument
120 	if (arg.value < 0)  in dc_fixpt_abs()
121 		return dc_fixpt_neg(arg);  in dc_fixpt_abs()
123 		return arg;  in dc_fixpt_abs()
184  *          | min_value, when arg <= min_value
185  * result = | arg, when min_value < arg < max_value
186  *          | max_value, when arg >= max_value
189 	struct fixed31_32 arg,  in dc_fixpt_clamp()  argument
193 	if (dc_fixpt_le(arg, min_value))  in dc_fixpt_clamp()
195 	else if (dc_fixpt_le(max_value, arg))  in dc_fixpt_clamp()
198 		return arg;  in dc_fixpt_clamp()
208  * result = arg << shift
210 static inline struct fixed31_32 dc_fixpt_shl(struct fixed31_32 arg, unsigned char shift)  in dc_fixpt_shl()  argument
212 	ASSERT(((arg.value >= 0) && (arg.value <= LLONG_MAX >> shift)) ||  in dc_fixpt_shl()
213 		((arg.value < 0) && (arg.value >= ~(LLONG_MAX >> shift))));  in dc_fixpt_shl()
215 	arg.value = arg.value << shift;  in dc_fixpt_shl()
217 	return arg;  in dc_fixpt_shl()
222  * result = arg >> shift
224 static inline struct fixed31_32 dc_fixpt_shr(struct fixed31_32 arg, unsigned char shift)  in dc_fixpt_shr()  argument
226 	bool negative = arg.value < 0;  in dc_fixpt_shr()
229 		arg.value = -arg.value;  in dc_fixpt_shr()
230 	arg.value = arg.value >> shift;  in dc_fixpt_shr()
232 		arg.value = -arg.value;  in dc_fixpt_shr()
233 	return arg;  in dc_fixpt_shr()
315  * result = square(arg) := arg * arg
317 struct fixed31_32 dc_fixpt_sqr(struct fixed31_32 arg);
344  * result = reciprocal(arg) := 1 / arg
349 struct fixed31_32 dc_fixpt_recip(struct fixed31_32 arg);
358  * result = sinc(arg) := sin(arg) / arg
364 struct fixed31_32 dc_fixpt_sinc(struct fixed31_32 arg);
368  * result = sin(arg)
374 struct fixed31_32 dc_fixpt_sin(struct fixed31_32 arg);
378  * result = cos(arg)
386 struct fixed31_32 dc_fixpt_cos(struct fixed31_32 arg);
395  * result = exp(arg)
398  * Currently, function is verified for abs(arg) <= 1.
400 struct fixed31_32 dc_fixpt_exp(struct fixed31_32 arg);
404  * result = log(arg)
407  * Currently, abs(arg) should be less than 1.
412 struct fixed31_32 dc_fixpt_log(struct fixed31_32 arg);
444  * result = floor(arg) := greatest integer lower than or equal to arg
446 static inline int dc_fixpt_floor(struct fixed31_32 arg)  in dc_fixpt_floor()  argument
448 	unsigned long long arg_value = arg.value > 0 ? arg.value : -arg.value;  in dc_fixpt_floor()
450 	if (arg.value >= 0)  in dc_fixpt_floor()
458  * result = round(arg) := integer nearest to arg
460 static inline int dc_fixpt_round(struct fixed31_32 arg)  in dc_fixpt_round()  argument
462 	unsigned long long arg_value = arg.value > 0 ? arg.value : -arg.value;  in dc_fixpt_round()
470 	if (arg.value >= 0)  in dc_fixpt_round()
478  * result = ceil(arg) := lowest integer greater than or equal to arg
480 static inline int dc_fixpt_ceil(struct fixed31_32 arg)  in dc_fixpt_ceil()  argument
482 	unsigned long long arg_value = arg.value > 0 ? arg.value : -arg.value;  in dc_fixpt_ceil()
491 	if (arg.value >= 0)  in dc_fixpt_ceil()
503 unsigned int dc_fixpt_u4d19(struct fixed31_32 arg);
505 unsigned int dc_fixpt_u3d19(struct fixed31_32 arg);
507 unsigned int dc_fixpt_u2d19(struct fixed31_32 arg);
509 unsigned int dc_fixpt_u0d19(struct fixed31_32 arg);
511 unsigned int dc_fixpt_clamp_u0d14(struct fixed31_32 arg);
513 unsigned int dc_fixpt_clamp_u0d10(struct fixed31_32 arg);
515 int dc_fixpt_s4d19(struct fixed31_32 arg);
517 static inline struct fixed31_32 dc_fixpt_truncate(struct fixed31_32 arg, unsigned int frac_bits)  in dc_fixpt_truncate()  argument
519 	bool negative = arg.value < 0;  in dc_fixpt_truncate()
523 		return arg;  in dc_fixpt_truncate()
527 		arg.value = -arg.value;  in dc_fixpt_truncate()
528 	arg.value &= (~0ULL) << (FIXED31_32_BITS_PER_FRACTIONAL_PART - frac_bits);  in dc_fixpt_truncate()
530 		arg.value = -arg.value;  in dc_fixpt_truncate()
531 	return arg;  in dc_fixpt_truncate()