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/linux/arch/arm/lib/
H A Dlib1funcs.S40 .macro ARM_DIV_BODY dividend, divisor, result, curbit
44 clz \curbit, \divisor
48 mov \divisor, \divisor, lsl \result
54 @ Initially shift the divisor left 3 bits if possible,
58 tst \divisor, #0xe0000000
59 moveq \divisor, \divisor, lsl #3
63 @ Unless the divisor is very big, shift it up in multiples of
65 @ division loop. Continue shifting until the divisor i
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H A Ddiv64.S5 * Optimized computation of 64-bit dividend / 32-bit divisor
29 * __do_div64: perform a division with 64-bit dividend and 32-bit divisor.
36 * r4 = divisor (preserved)
50 bls 9f @ divisor is 0 or 1
52 beq 8f @ divisor is power of 2
59 @ Align divisor with upper part of dividend.
60 @ The aligned divisor is stored in yl preserving the original.
102 @ divisor for comparisons, considering the carry-out bit as well.
139 @ divisor at this point since divisor ca
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/linux/include/linux/
H A Dmath64.h16 * div_u64_rem - unsigned 64bit divide with 32bit divisor with remainder
18 * @divisor: unsigned 32bit divisor
21 * Return: sets ``*remainder``, then returns dividend / divisor
26 static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) in div_u64_rem() argument
28 *remainder = dividend % divisor; in div_u64_rem()
29 return dividend / divisor; in div_u64_rem()
33 * div_s64_rem - signed 64bit divide with 32bit divisor with remainder
35 * @divisor: signed 32bit divisor
40 div_s64_rem(s64 dividend,s32 divisor,s32 * remainder) div_s64_rem() argument
54 div64_u64_rem(u64 dividend,u64 divisor,u64 * remainder) div64_u64_rem() argument
67 div64_u64(u64 dividend,u64 divisor) div64_u64() argument
79 div64_s64(s64 dividend,s64 divisor) div64_s64() argument
90 div_u64_rem(u64 dividend,u32 divisor,u32 * remainder) div_u64_rem() argument
127 div_u64(u64 dividend,u32 divisor) div_u64() argument
142 div_s64(s64 dividend,s32 divisor) div_s64() argument
257 mul_u64_u32_div(u64 a,u32 mul,u32 divisor) mul_u64_u32_div() argument
323 DIV64_U64_ROUND_CLOSEST(dividend,divisor) global() argument
336 DIV_U64_ROUND_CLOSEST(dividend,divisor) global() argument
349 DIV_S64_ROUND_CLOSEST(dividend,divisor) global() argument
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/linux/arch/alpha/lib/
H A Ddivide.S29 * the divisor is small is handled better by the DEC algorithm
38 * $1 - shifted divisor
43 * $25 - divisor
56 #define divisor $1 macro
104 bis $25,$25,divisor
109 LONGIFY(divisor)
114 beq divisor, 9f /* div by zero */
118 * shift divisor left, using 3-bit shifts for
125 1: cmpult divisor,modulus,compare
126 s8addq divisor,
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H A Dev6-divide.S29 * the divisor is small is handled better by the DEC algorithm
38 * $1 - shifted divisor
43 * $25 - divisor
66 #define divisor $1 macro
114 bis $25,$25,divisor # E :
120 LONGIFY(divisor) # E : U L L U
127 beq divisor, 9f /* div by zero */
137 * shift divisor left, using 3-bit shifts for
144 1: cmpult divisor,modulus,compare # E :
145 s8addq divisor,
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/linux/drivers/gpu/drm/amd/display/dc/sspl/
H A Dspl_os_types.h24 static inline uint64_t spl_div_u64_rem(uint64_t dividend, uint32_t divisor, uint32_t *remainder) in spl_div_u64_rem() argument
26 return div_u64_rem(dividend, divisor, remainder); in spl_div_u64_rem()
29 static inline uint64_t spl_div_u64(uint64_t dividend, uint32_t divisor) in spl_div_u64() argument
31 return div_u64(dividend, divisor); in spl_div_u64()
34 static inline uint64_t spl_div64_u64(uint64_t dividend, uint64_t divisor) in spl_div64_u64() argument
36 return div64_u64(dividend, divisor); in spl_div64_u64()
39 static inline uint64_t spl_div64_u64_rem(uint64_t dividend, uint64_t divisor, uint64_t *remainder) in spl_div64_u64_rem() argument
41 return div64_u64_rem(dividend, divisor, remainder); in spl_div64_u64_rem()
44 static inline int64_t spl_div64_s64(int64_t dividend, int64_t divisor) in spl_div64_s64() argument
46 return div64_s64(dividend, divisor); in spl_div64_s64()
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/linux/drivers/cpufreq/
H A Dsparc-us2e-cpufreq.c86 unsigned long old_divisor, unsigned long divisor) in frob_mem_refresh() argument
91 refr_count /= (MCTRL0_REFR_CLKS_P_CNT * divisor * 1000000000UL); in frob_mem_refresh()
118 unsigned long old_divisor, unsigned long divisor) in us2e_transition() argument
123 if (old_divisor == 2 && divisor == 1) { in us2e_transition()
126 frob_mem_refresh(0, clock_tick, old_divisor, divisor); in us2e_transition()
127 } else if (old_divisor == 1 && divisor == 2) { in us2e_transition()
128 frob_mem_refresh(1, clock_tick, old_divisor, divisor); in us2e_transition()
131 } else if (old_divisor == 1 && divisor > 2) { in us2e_transition()
135 2, divisor); in us2e_transition()
136 } else if (old_divisor > 2 && divisor in us2e_transition()
248 unsigned long clock_tick, divisor, old_divisor, estar; __us2e_freq_target() local
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/linux/drivers/acpi/acpica/
H A Dutmath.c243 * divisor - 32-bit divisor
257 u32 divisor, u64 *out_quotient, u32 *out_remainder) in acpi_ut_short_divide() argument
265 /* Always check for a zero divisor */ in acpi_ut_short_divide()
267 if (divisor == 0) { in acpi_ut_short_divide()
278 ACPI_DIV_64_BY_32(0, dividend_ovl.part.hi, divisor, in acpi_ut_short_divide()
281 ACPI_DIV_64_BY_32(remainder32, dividend_ovl.part.lo, divisor, in acpi_ut_short_divide()
316 union uint64_overlay divisor; in acpi_ut_divide() local
327 /* Always check for a zero divisor */ in acpi_ut_divide()
334 divisor in acpi_ut_divide()
445 acpi_ut_short_divide(u64 in_dividend,u32 divisor,u64 * out_quotient,u32 * out_remainder) acpi_ut_short_divide() argument
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/linux/drivers/iio/common/hid-sensors/
H A Dhid-sensor-attributes.c75 static void simple_div(int dividend, int divisor, int *whole, in simple_div() argument
82 if (divisor == 0) { in simple_div()
86 *whole = dividend/divisor; in simple_div()
87 rem = dividend % divisor; in simple_div()
89 while (rem <= divisor) { in simple_div()
93 *micro_frac = (rem / divisor) * int_pow(10, 6 - exp); in simple_div()
99 int divisor = int_pow(10, exp); in split_micro_fraction() local
101 *val1 = no / divisor; in split_micro_fraction()
102 *val2 = no % divisor * int_pow(10, 6 - exp); in split_micro_fraction()
137 int divisor; in convert_to_vtf_format() local
362 int divisor; adjust_exponent_nano() local
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/linux/arch/mips/cavium-octeon/executive/
H A Dcvmx-helper-jtag.c50 uint32_t divisor = cvmx_sysinfo_get()->cpu_clock_hz / (25 * 1000000); in cvmx_helper_qlm_jtag_init() local
51 divisor = (divisor - 1) >> 2; in cvmx_helper_qlm_jtag_init()
52 /* Convert the divisor into a power of 2 shift */ in cvmx_helper_qlm_jtag_init()
53 while (divisor) { in cvmx_helper_qlm_jtag_init()
55 divisor = divisor >> 1; in cvmx_helper_qlm_jtag_init()
/linux/sound/soc/codecs/
H A Dtlv320aic26.c70 int fsref, divisor, wlen, pval, jval, dval, qval; in aic26_hw_params() local
79 case 8000: fsref = 48000; divisor = AIC26_DIV_6; break; in aic26_hw_params()
80 case 11025: fsref = 44100; divisor = AIC26_DIV_4; break; in aic26_hw_params()
81 case 12000: fsref = 48000; divisor = AIC26_DIV_4; break; in aic26_hw_params()
82 case 16000: fsref = 48000; divisor = AIC26_DIV_3; break; in aic26_hw_params()
83 case 22050: fsref = 44100; divisor = AIC26_DIV_2; break; in aic26_hw_params()
84 case 24000: fsref = 48000; divisor = AIC26_DIV_2; break; in aic26_hw_params()
85 case 32000: fsref = 48000; divisor = AIC26_DIV_1_5; break; in aic26_hw_params()
86 case 44100: fsref = 44100; divisor = AIC26_DIV_1; break; in aic26_hw_params()
87 case 48000: fsref = 48000; divisor in aic26_hw_params()
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/linux/drivers/net/wireless/realtek/rtw89/
H A Dutil.h35 /* The result of negative dividend and positive divisor is undefined, but it
38 * Note: the maximum value of divisor is 0x7FFF_FFFF, because we cast it to
41 static inline s32 s32_div_u32_round_down(s32 dividend, u32 divisor, s32 *remainder) in s32_div_u32_round_down() argument
43 s32 i_divisor = (s32)divisor; in s32_div_u32_round_down()
60 static inline s32 s32_div_u32_round_closest(s32 dividend, u32 divisor) in s32_div_u32_round_closest() argument
62 return s32_div_u32_round_down(dividend + divisor / 2, divisor, NULL); in s32_div_u32_round_closest()
/linux/arch/x86/include/asm/
H A Ddiv64.h43 static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) in div_u64_rem() argument
53 if (upper >= divisor) { in div_u64_rem()
54 d.v32[1] = upper / divisor; in div_u64_rem()
55 upper %= divisor; in div_u64_rem()
58 "rm" (divisor), "0" (d.v32[0]), "1" (upper)); in div_u64_rem()
/linux/drivers/clk/
H A Dclk-vt8500.c124 /* div == 0 is actually the highest divisor */ in vt8500_dclk_recalc_rate()
135 u32 divisor; in vt8500_dclk_round_rate() local
140 divisor = *prate / rate; in vt8500_dclk_round_rate()
142 /* If prate / rate would be decimal, incr the divisor */ in vt8500_dclk_round_rate()
143 if (rate * divisor < *prate) in vt8500_dclk_round_rate()
144 divisor++; in vt8500_dclk_round_rate()
147 * If this is a request for SDMMC we have to adjust the divisor in vt8500_dclk_round_rate()
150 if ((cdev->div_mask == 0x3F) && (divisor > 31)) { in vt8500_dclk_round_rate()
151 divisor = 64 * ((divisor / 6 in vt8500_dclk_round_rate()
161 u32 divisor; vt8500_dclk_set_rate() local
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/linux/arch/powerpc/lib/
H A Ddiv64.S7 * the 64-bit quotient, and r4 contains the divisor.
22 divwu r7,r5,r4 # if dividend.hi >= divisor,
23 mullw r0,r7,r4 # quotient.hi = dividend.hi / divisor
24 subf. r5,r0,r5 # dividend.hi %= divisor
31 srw r10,r10,r0 # the divisor right the same amount,
41 mulhwu r9,r11,r4 # multiply the estimate by the divisor,
42 subfc r6,r10,r6 # take the product from the divisor,
/linux/lib/crypto/mpi/
H A Dmpi-div.c19 int mpi_fdiv_r(MPI rem, MPI dividend, MPI divisor) in mpi_fdiv_r() argument
21 int divisor_sign = divisor->sign; in mpi_fdiv_r()
25 /* We need the original value of the divisor after the remainder has been in mpi_fdiv_r()
29 if (rem == divisor) { in mpi_fdiv_r()
30 temp_divisor = mpi_copy(divisor); in mpi_fdiv_r()
33 divisor = temp_divisor; in mpi_fdiv_r()
36 err = mpi_tdiv_r(rem, dividend, divisor); in mpi_fdiv_r()
41 err = mpi_add(rem, rem, divisor); in mpi_fdiv_r()
113 /* Optimize division by a single-limb divisor. */ in mpi_tdiv_qr()
/linux/drivers/cpuidle/governors/
H A Dmenu.c119 unsigned int max, min, divisor; in get_typical_interval() local
129 divisor = 0; in get_typical_interval()
139 divisor++; in get_typical_interval()
154 if (divisor == INTERVALS) { in get_typical_interval()
158 do_div(avg, divisor); in get_typical_interval()
159 do_div(variance, divisor); in get_typical_interval()
178 if ((avg_sq > variance * 36 && divisor * 4 >= INTERVALS * 3) || in get_typical_interval()
192 if (divisor * 4 <= INTERVALS * 3) { in get_typical_interval()
200 if (divisor >= INTERVALS / 2) in get_typical_interval()
/linux/arch/x86/boot/
H A Dstring.c193 static inline u64 __div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) in __div_u64_rem() argument
203 if (upper >= divisor) { in __div_u64_rem()
204 d.v32[1] = upper / divisor; in __div_u64_rem()
205 upper %= divisor; in __div_u64_rem()
208 "rm" (divisor), "0" (d.v32[0]), "1" (upper)); in __div_u64_rem()
212 static inline u64 __div_u64(u64 dividend, u32 divisor) in __div_u64() argument
216 return __div_u64_rem(dividend, divisor, &remainder); in __div_u64()
/linux/Documentation/devicetree/bindings/clock/
H A Dvt8500.txt44 - divisor-reg : shall be the register offset from PMC base for the divisor
47 - divisor-mask : shall be the mask for the divisor register. Defaults to 0x1f
70 divisor-reg = <0x328>;
71 divisor-mask = <0x3f>;
/linux/drivers/comedi/drivers/
H A Dadv_pci1760.c178 unsigned int divisor; in pci1760_pwm_ns_to_div() local
182 divisor = DIV_ROUND_CLOSEST(ns, PCI1760_PWM_TIMEBASE); in pci1760_pwm_ns_to_div()
185 divisor = DIV_ROUND_UP(ns, PCI1760_PWM_TIMEBASE); in pci1760_pwm_ns_to_div()
188 divisor = ns / PCI1760_PWM_TIMEBASE; in pci1760_pwm_ns_to_div()
194 if (divisor < 1) in pci1760_pwm_ns_to_div()
195 divisor = 1; in pci1760_pwm_ns_to_div()
196 if (divisor > 0xffff) in pci1760_pwm_ns_to_div()
197 divisor = 0xffff; in pci1760_pwm_ns_to_div()
199 return divisor; in pci1760_pwm_ns_to_div()
H A Daddi_apci_3120.c276 unsigned int divisor; in apci3120_ns_to_timer() local
280 divisor = DIV_ROUND_UP(ns, timer_base); in apci3120_ns_to_timer()
283 divisor = ns / timer_base; in apci3120_ns_to_timer()
287 divisor = DIV_ROUND_CLOSEST(ns, timer_base); in apci3120_ns_to_timer()
293 if (divisor > 0x00ffffff) in apci3120_ns_to_timer()
294 divisor = 0x00ffffff; in apci3120_ns_to_timer()
297 if (divisor > 0xffff) in apci3120_ns_to_timer()
298 divisor = 0xffff; in apci3120_ns_to_timer()
300 /* the timers require a minimum divisor of 2 */ in apci3120_ns_to_timer()
301 if (divisor < in apci3120_ns_to_timer()
541 unsigned int divisor; apci3120_ai_cmd() local
709 unsigned int divisor; apci3120_ai_insn_read() local
822 unsigned int divisor; apci3120_timer_insn_config() local
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H A Dcomedi_8254.c81 * Calculates the divisor value needed for a single counter to generate
85 * Calculates the two divisor values needed to the generate the pacer
89 * Transfers the intermediate divisor values to the current divisors.
93 * divisor values.
343 * @counter1: the counter number for the first divisor
344 * @counter2: the counter number for the second divisor
384 i8254->divisor = i8254->next_div & 0xffff; in comedi_8254_update_divisors()
391 * comedi_8254_cascade_ns_to_timer - calculate the cascaded divisor values
476 * comedi_8254_ns_to_timer - calculate the divisor value for nanosec timing
484 unsigned int divisor; in comedi_8254_ns_to_timer() local
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/linux/arch/x86/kernel/
H A Dearly_printk.c134 static __init void early_serial_hw_init(unsigned divisor) in early_serial_hw_init() argument
145 static_call(serial_out)(early_serial_base, DLL, divisor & 0xff); in early_serial_hw_init()
146 static_call(serial_out)(early_serial_base, DLH, (divisor >> 8) & 0xff); in early_serial_hw_init()
159 unsigned divisor; in early_serial_init() local
192 /* Convert from baud to divisor value */ in early_serial_init()
193 divisor = 115200 / baud; in early_serial_init()
196 early_serial_hw_init(divisor); in early_serial_init()
264 unsigned divisor; in early_pci_serial_init() local
358 /* Convert from baud to divisor value */ in early_pci_serial_init()
359 divisor in early_pci_serial_init()
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/linux/net/sched/
H A Dsch_sfq.c110 unsigned int divisor; /* number of slots in hash table */ member
119 sfq_index *ht; /* Hash table ('divisor' slots) */
153 return skb_get_hash_perturb(skb, &q->perturbation) & (q->divisor - 1); in sfq_hash()
166 TC_H_MIN(skb->priority) <= q->divisor) in sfq_classify()
187 if (TC_H_MIN(res.classid) <= q->divisor) in sfq_classify()
639 unsigned int divisor; in sfq_change() local
651 if (ctl->divisor && in sfq_change()
652 (!is_power_of_2(ctl->divisor) || ctl->divisor > 65536)) in sfq_change()
679 divisor in sfq_change()
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/linux/arch/arm/boot/dts/vt8500/
H A Dwm8750.dtsi131 divisor-reg = <0x300>;
138 divisor-reg = <0x304>;
145 divisor-reg = <0x320>;
152 divisor-reg = <0x310>;
207 divisor-reg = <0x350>;
216 divisor-reg = <0x330>;
217 divisor-mask = <0x3f>;
226 divisor-reg = <0x3A0>;
235 divisor-reg = <0x3A4>;

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