Lines Matching +full:3 +full:- +full:point

31 .Nd fixed-point math library based on the
39 data types and APIs support fixed-point math based on the
67 bits of precision after the binary radix point,
79 None of the operations is affected by the floating-point environment.
86 .Bl -column "isgreaterequal" "bessel function of the second kind of the order 0"
91 .Xr Q_INI 3	initialise a Q number
95 .Xr Q_QADDQ 3	addition
96 .Xr Q_QDIVQ 3	division
97 .Xr Q_QMULQ 3	multiplication
98 .Xr Q_QSUBQ 3	subtraction
99 .Xr Q_NORMPREC 3	normalisation
100 .Xr Q_QMAXQ 3	maximum function
101 .Xr Q_QMINQ 3	minimum function
102 .Xr Q_QCLONEQ 3	identical copy
103 .Xr Q_QCPYVALQ 3	representational copy
107 .Xr Q_QADDI 3	addition
108 .Xr Q_QDIVI 3	division
109 .Xr Q_QMULI 3	multiplication
110 .Xr Q_QSUBI 3	subtraction
111 .Xr Q_QFRACI 3	fraction
112 .Xr Q_QCPYVALI 3	overwrite
116 .Xr Q_QABS 3	absolute value
117 .Xr Q_Q2D 3	double representation
118 .Xr Q_Q2F 3	float representation
122 .Xr Q_SIGNED 3	determine sign
123 .Xr Q_LTZ 3	less than zero
124 .Xr Q_PRECEQ 3	compare bits
125 .Xr Q_QLTQ 3	less than
126 .Xr Q_QLEQ 3	less or equal
127 .Xr Q_QGTQ 3	greater than
128 .Xr Q_QGEQ 3	greater or equal
129 .Xr Q_QEQ 3	equal
130 .Xr Q_QNEQ 3	not equal
131 .Xr Q_OFLOW 3	would overflow
132 .Xr Q_RELPREC 3	relative precision
136 .Xr Q_SIGNSHFT 3	sign bit position
137 .Xr Q_SSIGN 3	sign bit
138 .Xr Q_CRAWMASK 3	control bitmask
139 .Xr Q_SRAWMASK 3	sign bitmask
140 .Xr Q_GCRAW 3	raw control bits
141 .Xr Q_GCVAL 3	value of control bits
142 .Xr Q_SCVAL 3	set control bits
146 .Xr Q_IFRAWMASK 3	integer/fractional bitmask
147 .Xr Q_IFVALIMASK 3	value of integer bits
148 .Xr Q_IFVALFMASK 3	value of fractional bits
149 .Xr Q_GIFRAW 3	raw integer/fractional bits
150 .Xr Q_GIFABSVAL 3	absolute value of fractional bits
151 .Xr Q_GIFVAL 3	real value of fractional bits
152 .Xr Q_SIFVAL 3	set integer/fractional bits
153 .Xr Q_SIFVALS 3	set separate integer/fractional values
157 .Xr Q_IRAWMASK 3	integer bitmask
158 .Xr Q_GIRAW 3	raw integer bits
159 .Xr Q_GIABSVAL 3	absolute value of integer bits
160 .Xr Q_GIVAL 3	real value of integer bits
161 .Xr Q_SIVAL 3	set integer bits
165 .Xr Q_FRAWMASK 3	fractional bitmask
166 .Xr Q_GFRAW 3	raw fractional bits
167 .Xr Q_GFABSVAL 3	absolute value of fractional bits
168 .Xr Q_GFVAL 3	real value of fractional bits
169 .Xr Q_SFVAL 3	set fractional bits
173 .Xr Q_NCBITS 3	number of reserved control bits
174 .Xr Q_BT 3	C data type
175 .Xr Q_TC 3	casted data type
176 .Xr Q_NTBITS 3	number of total bits
177 .Xr Q_NFCBITS 3	number of control-encoded fractional bits
178 .Xr Q_MAXNFBITS 3	number of maximum fractional bits
179 .Xr Q_NFBITS 3	number of effective fractional bits
180 .Xr Q_NIBITS 3	number of integer bits
181 .Xr Q_RPSHFT 3	bit position of radix point
182 .Xr Q_ABS 3	absolute value
183 .Xr Q_MAXSTRLEN 3	number of characters to render string
184 .Xr Q_TOSTR 3	render string
185 .Xr Q_SHL 3	left-shifted value
186 .Xr Q_SHR 3	right-shifted value
187 .Xr Q_DEBUG 3	render debugging information
188 .Xr Q_DFV2BFV 3	convert decimal fractional value
193 data types and APIs support fixed-point math based on the
207 .Bd -literal -offset indent
231 The 3 least significant bits
234 .Bl -dash
236 bits 1-2 specify the binary radix point shift index operand, with 00,01,10,11 ==
237 1,2,3,4.
239 bit 3 specifies the radix point shift index operand multiplier as 2
247 bits of precision after the binary radix point.
273 .Bd -literal -offset indent
278 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1
279 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
284 Important bit counts are: total, control, control-encoded fractional, maximum
290 The count of control-encoded fractional bits is derived from calculating the
297 For example, a s32q_t has a maximum of 32 - 3 - 1 = 28 fractional bits.
300 control-encoded fractional bits and the maximum fractional bits.
301 For example, a s32q_t with 32 control-encoded fractional bits is effectively
305 total bits and all other non-integer data bits
307 For example, a s32q_t with 8 effective fractional bits has 32 - 3 - 8 - 1 = 20 integer
310 been reserved for fractional data, e.g., when the number of control-encoded
315 .Bd -literal -offset indent
320 Q_INI(&pi, 3, 14159, 16);
327 Q_TOSTR(a, -1, 10, buf, sizeof(buf));
333 initialise it with the fixed-point value for 5/3, and render a debugging
335 .Pq including its full precision decimal C-string representation ,
337 .Bd -literal -offset indent
340 Q_QFRACI(&s32, 5, 3);
342 Q_TOSTR(s32, -1, 10, buf, sizeof(buf));
347 .Bd -literal -offset indent
365 .Xr math 3 ,
366 .Xr Q_FRAWMASK 3 ,
367 .Xr Q_IFRAWMASK 3 ,
368 .Xr Q_INI 3 ,
369 .Xr Q_IRAWMASK 3 ,
370 .Xr Q_QABS 3 ,
371 .Xr Q_QADDI 3 ,
372 .Xr Q_QADDQ 3 ,
373 .Xr Q_SIGNED 3 ,
374 .Xr Q_SIGNSHFT 3 ,
382 .An -nosplit