| /linux/arch/arm/nwfpe/ |
| H A D | softfloat-specialize | 5 This C source fragment is part of the SoftFloat IEC/IEEE Floating-point
11 National Science Foundation under grant MIP-9311980. The original version
12 of this code was written as part of a project to build a fixed-point vector
16 http://www.jhauser.us/arithmetic/SoftFloat-2b/SoftFloat-source.txt
33 -------------------------------------------------------------------------------
34 Underflow tininess-detection mode, statically initialized to default value.
36 -------------------------------------------------------------------------------
41 -------------------------------------------------------------------------------
42 Raises the exceptions specified by `flags'. Floating-point traps can be
48 Moved this function out of softfloat-specialize into fpmodule.c.
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| H A D | softfloat.c | 4 This C source file is part of the SoftFloat IEC/IEEE Floating-point
10 National Science Foundation under grant MIP-9311980. The original version
11 of this code was written as part of a project to build a fixed-point vector
15 http://www.jhauser.us/arithmetic/SoftFloat-2b/SoftFloat-source.txt
38 -------------------------------------------------------------------------------
39 Primitive arithmetic functions, including multi-word arithmetic, and
42 -------------------------------------------------------------------------------
44 #include "softfloat-macros"
47 -------------------------------------------------------------------------------
52 are propagated from function inputs to output. These details are target-
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| H A D | softfloat.h | 5 This C header file is part of the SoftFloat IEC/IEEE Floating-point
11 National Science Foundation under grant MIP-9311980. The original version
12 of this code was written as part of a project to build a fixed-point vector
16 http://www.jhauser.us/arithmetic/SoftFloat-2b/SoftFloat-source.txt
37 -------------------------------------------------------------------------------
38 The macro `FLOATX80' must be defined to enable the extended double-precision
39 floating-point format `floatx80'. If this macro is not defined, the
42 -------------------------------------------------------------------------------
49 -------------------------------------------------------------------------------
50 Software IEC/IEEE floating-point types.
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| /linux/Documentation/timers/ |
| H A D | hrtimers.rst | 2 hrtimers - subsystem for high-resolution kernel timers
5 This patch introduces a new subsystem for high-resolution kernel timers.
9 back and forth trying to integrate high-resolution and high-precision
11 such high-resolution timer implementations in practice, we came to the
18 - the forced handling of low-resolution and high-resolution timers in
21 32-bitness assumptions, and has been honed and micro-optimized for a
23 for many years - and thus even small extensions to it easily break
26 current usage - but it is simply not suitable to be extended for
27 high-res timers.
29 - the unpredictable [O(N)] overhead of cascading leads to delays which
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| H A D | hpet.rst | 2 High Precision Event Timer Driver for Linux
5 The High Precision Event Timer (HPET) hardware follows a specification
8 Each HPET has one fixed-rate counter (at 10+ MHz, hence "High Precision")
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| /linux/Documentation/devicetree/bindings/hwmon/ |
| H A D | sensirion,shtc1.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Christopher Ruehl chris.ruehl@gtsys.com.hk
14 designed especially for battery-driven high-volume consumer electronics
24 - sensirion,shtc1
25 - sensirion,shtw1
26 - sensirion,shtc3
31 sensirion,blocking-io:
36 sensirion,low-precision:
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| H A D | adi,ltc2947.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices LTC2947 high precision power and energy monitor
10 - Nuno Sá <nuno.sa@analog.com>
13 Analog Devices LTC2947 high precision power and energy monitor over SPI or I2C.
15 https://www.analog.com/media/en/technical-documentation/data-sheets/LTC2947.pdf
20 - adi,ltc2947
33 adi,accumulator-ctl-pol:
41 $ref: /schemas/types.yaml#/definitions/uint32-array
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| /linux/drivers/firmware/efi/libstub/ |
| H A D | vsprintf.c | 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* -*- linux-c -*- ------------------------------------------------------- *
5 * Copyright 2007 rPath, Inc. - All Rights Reserved
7 * ----------------------------------------------------------------------- */
10 * Oh, it's a waste of space, but oh-so-yummy for debugging.
28 i = i * 10 + *((*s)++) - '0'; in skip_atoi()
44 *--end = '0' + (r - q * 10); in put_dec_full4()
47 *--end = '0' + r; in put_dec_full4()
57 * (second call in the put_dec code, assuming n is all-ones).
64 put_dec_full4(end, x - q * 10000); in put_dec_helper4()
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| /linux/Documentation/devicetree/bindings/timer/ |
| H A D | econet,en751221-timer.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/timer/econet,en751221-timer.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: EcoNet EN751221 High Precision Timer (HPT)
10 - Caleb James DeLisle <cjd@cjdns.fr>
13 The EcoNet High Precision Timer (HPT) is a timer peripheral found in various
14 EcoNet SoCs, including the EN751221 and EN751627 families. It provides per-VPE
15 count/compare registers and a per-CPU control register, with a single interrupt
16 line using a percpu-devid interrupt mechanism.
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| /linux/include/media/ |
| H A D | v4l2-vp9.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
13 #include <media/v4l2-ctrls.h>
16 * struct v4l2_vp9_frame_mv_context - motion vector-related probabilities
25 * @class0_hp: motion vector class0 high precision fractional bit probabilities.
26 * @hp: motion vector high precision fractional bit probabilities.
43 * struct v4l2_vp9_frame_context - frame probabilities, including motion-vector related
52 * @is_inter: is inter-block probabilities.
87 * struct v4l2_vp9_frame_symbol_counts - pointers to arrays of symbol counts
91 * @intra_inter: is inter-block counts.
109 * @class0_hp: motion vector class0 high precision fractional bit counts.
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| /linux/drivers/input/mouse/ |
| H A D | elan_i2c.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
10 * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
11 * copyright (c) 2011-2012 Google, Inc.
34 #define ETP_REPORT_ID2 0x60 /* High precision report */
40 #define ETP_MK_DATA_OFFSET 33 /* For high precision reports */
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| /linux/Documentation/devicetree/bindings/regulator/ |
| H A D | microchip,mcp16502.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: MCP16502 - High-Performance PMIC
10 - Andrei Simion <andrei.simion@microchip.com>
16 of High-Performance mode (HPM).
22 lpm-gpios:
25 Note that this GPIO must remain high during
26 suspend-to-ram, keeping the PMIC into HIBERNATE mode.
31 lvin-supply:
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| /linux/Documentation/devicetree/bindings/ptp/ |
| H A D | fsl,ptp.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Frank Li <Frank.Li@nxp.com>
15 - enum:
16 - fsl,etsec-ptp
17 - fsl,fman-ptp-timer
18 - fsl,dpaa2-ptp
19 - items:
20 - const: pci1957,ee02
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| /linux/drivers/iio/gyro/ |
| H A D | adis16130.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * ADIS16130 Digital Output, High Precision Angular Rate Sensor driver
21 /* 1 = data-ready signal low when unread data on all channels; */
33 #define ADIS16130_MODE_24BIT (1 << 1) /* 1 = 24-bit resolution; */
36 * struct adis16130_state - device instance specific data
52 .tx_buf = st->buf, in adis16130_spi_read()
53 .rx_buf = st->buf, in adis16130_spi_read()
57 mutex_lock(&st->buf_lock); in adis16130_spi_read()
59 st->buf[0] = ADIS16130_CON_RD | reg_addr; in adis16130_spi_read()
60 st->buf[1] = st->buf[2] = st->buf[3] = 0; in adis16130_spi_read()
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| /linux/tools/perf/pmu-events/arch/arm64/fujitsu/monaka/ |
| H A D | sve.json | 4 …ing the Advanced SIMD scalar instructions and the instructions listed in Non-SIMD SVE instructions…
8 …cturally executed SVE instructions, including the instructions listed in Non-SIMD SVE instructions…
12 …cturally executed SVE instructions, including the instructions listed in Non-SIMD SVE instructions…
20 "BriefDescription": "This event counts all architecturally executed micro-operation."
28 …ations due to scalar, Advanced SIMD, and SVE instructions listed in Floating-point instructions se…
32 …on": "This event counts architecturally executed floating-point fused multiply-add and multiply-su…
36 …"BriefDescription": "This event counts architecturally executed floating-point reciprocal estimate…
40 …uted floating-point convert operations due to the scalar, Advanced SIMD, and SVE floating-point co…
60 …"BriefDescription": "This event counts architecturally executed SVE 64-bit integer divide operatio…
76 …"BriefDescription": "This event counts architecturally executed SVE integer 64-bit x 64-bit multip…
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| /linux/Documentation/devicetree/bindings/x86/ |
| H A D | timer.txt | 2 ------
4 * High Precision Event Timer (HPET)
6 compatible = "intel,ce4100-hpet";
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| /linux/Documentation/hwmon/ |
| H A D | ltc2947.rst | 1 Kernel drivers ltc2947-i2c and ltc2947-spi
10 Addresses scanned: -
14 https://www.analog.com/media/en/technical-documentation/data-sheets/LTC2947.pdf
21 The LTC2947 is a high precision power and energy monitor that measures current,
37 The following attributes are supported. Limits are read-write, reset_history
38 is write-only and all the other attributes are read-only.
41 in0_input VP-VM voltage (mV).
49 in0_label Channel label (VP-VM)
61 curr1_input IP-IM Sense current (mA)
69 curr1_label Channel label (IP-IM)
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| /linux/arch/m68k/fpsp040/ |
| H A D | round.S | 21 | round --- round result according to precision/mode
24 | d1(high word) contains rounding precision:
36 | a0 is preserved and the g-r-s bits in d0 are cleared.
37 | The result is not typed - the tag field is invalid. The
41 | inexact (i.e. if any of the g-r-s bits were set).
50 | :rounding precision and sets
51 | ;the appropriate g-r-s bits.
117 asll #1,%d0 |shift g-bit to c-bit
124 | ext_grs --- extract guard, round and sticky bits
130 | selected rounding precision. It is called by the round subroutine
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| /linux/arch/mips/math-emu/ |
| H A D | dp_mul.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * double precision: common utilities
7 * Copyright (C) 1994-2000 Algorithmics Ltd.
112 xm <<= 64 - (DP_FBITS + 1); in ieee754dp_mul()
113 ym <<= 64 - (DP_FBITS + 1); in ieee754dp_mul()
116 * Multiply 64 bits xm, ym to give high 64 bits rm with stickness. in ieee754dp_mul()
146 * Sticky shift down to normal rounding precision. in ieee754dp_mul()
149 rm = (rm >> (64 - (DP_FBITS + 1 + 3))) | in ieee754dp_mul()
153 rm = (rm >> (64 - (DP_FBITS + 1 + 3 + 1))) | in ieee754dp_mul()
|
| H A D | sp_mul.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * single precision
7 * Copyright (C) 1994-2000 Algorithmics Ltd.
112 xm <<= 32 - (SP_FBITS + 1); in ieee754sp_mul()
113 ym <<= 32 - (SP_FBITS + 1); in ieee754sp_mul()
116 * Multiply 32 bits xm, ym to give high 32 bits rm with stickness. in ieee754sp_mul()
141 * Sticky shift down to normal rounding precision. in ieee754sp_mul()
144 rm = (rm >> (32 - (SP_FBITS + 1 + 3))) | in ieee754sp_mul()
148 rm = (rm >> (32 - (SP_FBITS + 1 + 3 + 1))) | in ieee754sp_mul()
|
| /linux/arch/m68k/math-emu/ |
| H A D | fp_util.S | 23 * the restrictions contained in a BSD-style copyright.)
63 tst.l (TASK_MM-8,%a2)
65 tst.l (TASK_MM-4,%a2)
69 1: printf ,"oops:%p,%p,%p\n",3,%a2@(TASK_MM-8),%a2@(TASK_MM-4),%a2@(TASK_MM)
94 | args: %d0 = source (32-bit long)
98 printf PCONV,"l2e: %p -> %p(",2,%d0,%a0
125 | args: %d0 = source (single-precision fp value)
129 printf PCONV,"s2e: %p -> %p(",2,%d0,%a0
139 add.w #0x3fff-0x7f,%d1 | re-bias the exponent.
141 move.l %d0,(%a0)+ | high lword of fp_ext.mant
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| /linux/Documentation/devicetree/bindings/iio/adc/ |
| H A D | adi,ad4080.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Analog Devices AD4080 20-Bit, 40 MSPS, Differential SAR ADC
11 - Antoniu Miclaus <antoniu.miclaus@analog.com>
14 The AD4080 is a high speed, low noise, low distortion, 20-bit, Easy Drive,
15 successive approximation register (SAR) analog-to-digital converter (ADC).
16 Maintaining high performance (signal-to-noise and distortion (SINAD) ratio
18 service a wide variety of precision, wide bandwidth data acquisition
21 https://www.analog.com/media/en/technical-documentation/data-sheets/ad4080.pdf
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| H A D | maxim,max34408.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Ivan Mikhaylov <fr0st61te@gmail.com>
13 The MAX34408/MAX34409 are two- and four-channel current monitors that are
15 unidirectional current sensor offers precision high-side operation with a
16 low full-scale sense voltage. The devices automatically sequence through
17 two or four channels and collect the current-sense samples and average them
19 user-programmable digital thresholds to indicate overcurrent conditions.
24 https://www.analog.com/media/en/technical-documentation/data-sheets/MAX34408-MAX34409.pdf
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| /linux/Documentation/virt/kvm/x86/ |
| H A D | timekeeping.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 Timekeeping Virtualization for X86-Based Architectures
32 information relevant to KVM and hardware-based virtualization.
41 2.1. i8254 - PIT
42 ----------------
46 channels which can be programmed to deliver periodic or one-shot interrupts.
53 The PIT uses I/O ports 0x40 - 0x43. Access to the 16-bit counters is done
59 -------------- ----------------
61 | 1.1932 MHz|---------->| CLOCK OUT | ---------> IRQ 0
63 -------------- | +->| GATE TIMER 0 |
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| /linux/drivers/pps/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
10 antennae. Userland can use it to get a high-precision time
36 This option adds support for direct in-kernel time
|