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/openbmc/phosphor-power/phosphor-regulators/test/
H A Dpmbus_utils_tests.cpp30 // Linear format: Exponent is negative: 0b1'1111 in TEST()
36 // Linear format: Exponent is negative: 0b1'0000 in TEST()
42 // Linear format: Exponent is positive: 0b0'1111 in TEST()
48 // Linear format: Exponent is positive: 0b0'0001 in TEST()
54 // Linear format: Exponent is zero: 0b0'0000 in TEST()
150 // Minimum possible exponent value: -16 in TEST()
151 // mantissa : 511, exponent : -16, decimal = 511 * 2^-16 = in TEST()
156 // Maximum possible exponent value: 15 in TEST()
157 // mantissa : 2, exponent : 15, decimal = 2 * 2^15 = 65536 in TEST()
162 // mantissa : -1024, exponent : 1, decimal = -1024 * 2^1 = -2048 in TEST()
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/openbmc/linux/arch/parisc/math-emu/
H A Dcnv_float.h46 #define Sgl_isinexact_to_fix(sgl_value,exponent) \ argument
47 ((exponent < (SGL_P - 1)) ? \
48 (Sall(sgl_value) << (SGL_EXP_LENGTH + 1 + exponent)) : FALSE)
73 #define Sgl_isone_roundbit(sgl_value,exponent) \ argument
74 ((Sall(sgl_value) << (SGL_EXP_LENGTH + 1 + exponent)) >> 31)
76 #define Sgl_isone_stickybit(sgl_value,exponent) \ argument
77 (exponent < (SGL_P - 2) ? \
78 Sall(sgl_value) << (SGL_EXP_LENGTH + 2 + exponent) : FALSE)
178 #define Dbl_isinexact_to_fix(dbl_valueA,dbl_valueB,exponent) \ argument
179 (exponent < (DBL_P-33) ? \
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H A Dsgl_float.h33 /* The hidden bit is always the low bit of the exponent */
151 /* An infinity is represented with the max exponent and a zero mantissa */
182 #define Sgl_setwrapped_exponent(sgl_value,exponent,op) \ argument
183 Deposit_sexponent(sgl_value,(exponent op SGL_WRAP))
249 #define Sgl_normalize(sgl_opnd,exponent) \ argument
252 exponent -= 8; \
256 exponent -= 4; \
260 exponent -= 1; \
289 #define Sgl_denormalize(opnd,exponent,guard,sticky,inexact) \ argument
291 if (exponent >= (1 - SGL_P)) { \
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/openbmc/linux/arch/x86/math-emu/
H A Dpoly_atan.c56 int exponent; in poly_atan() local
64 exponent = exponent(st0_ptr); in poly_atan()
68 exponent = exponent16(st0_ptr); in poly_atan()
71 exponent -= exponent(st1_ptr); in poly_atan()
75 exponent -= exponent16(st1_ptr); in poly_atan()
78 if ((exponent < 0) || ((exponent == 0) && in poly_atan()
88 exponent = -exponent; in poly_atan()
94 exponent += norm_Xsig(&argSignif); in poly_atan()
96 if ((exponent >= -1) in poly_atan()
97 || ((exponent == -2) && (argSignif.msw > 0xd413ccd0))) { in poly_atan()
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H A Dpoly_sin.c60 int exponent, echange; in poly_sine() local
66 exponent = exponent(st0_ptr); in poly_sine()
72 if ((exponent < -1) in poly_sine()
73 || ((exponent == -1) && (st0_ptr->sigh <= 0xe21240aa))) { in poly_sine()
80 shr_Xsig(&argSqrd, 2 * (-1 - exponent)); in poly_sine()
102 exponent = 3 * exponent; in poly_sine()
104 /* The minimum exponent difference is 3 */ in poly_sine()
105 shr_Xsig(&accumulator, exponent(st0_ptr) - exponent); in poly_sine()
112 setexponentpos(&result, exponent(st0_ptr) + echange); in poly_sine()
119 if (exponent == 0) { in poly_sine()
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H A Dpoly_l2.c29 long int exponent, expon, expon_expon; in poly_l2() local
35 exponent = exponent16(st0_ptr); in poly_l2()
42 exponent++; in poly_l2()
60 if (exponent < 0) { in poly_l2()
62 exponent = -exponent; in poly_l2()
65 expon_accum.msw = exponent; in poly_l2()
67 if (exponent) { in poly_l2()
110 long int exponent; in poly_l2p1() local
114 log2_kernel(st0_ptr, sign0, &accumulator, &exponent); in poly_l2p1()
120 exponent += round_Xsig(&accumulator); in poly_l2p1()
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H A Dpoly_2xm1.c55 long int exponent, shift; in poly_2xm1() local
60 exponent = exponent16(arg); in poly_2xm1()
63 if (exponent >= 0) { /* Don't want a |number| >= 1.0 */ in poly_2xm1()
73 if (exponent == -1) { in poly_2xm1()
76 exponent -= 2; in poly_2xm1()
79 } else if (exponent == -2) { in poly_2xm1()
82 exponent--; in poly_2xm1()
88 if (exponent < -2) { in poly_2xm1()
90 if (FPU_shrx(&Xll, -2 - exponent) >= 0x80000000U) in poly_2xm1()
100 add_two_Xsig(&accumulator, &argSignif, &exponent); in poly_2xm1()
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H A Dpoly_tan.c53 long int exponent; in poly_tan() local
59 exponent = exponent(st0_ptr); in poly_tan()
69 if ((exponent == 0) in poly_tan()
70 || ((exponent == -1) && (st0_ptr->sigh > 0xc90fdaa2))) { in poly_tan()
76 if (exponent == 0) { in poly_tan()
94 exponent = -1 + norm_Xsig(&argSignif); in poly_tan()
100 if (exponent < -1) { in poly_tan()
102 if (FPU_shrx(&XSIG_LL(accum), -1 - exponent) >= in poly_tan()
138 shr_Xsig(&accumulatore, -2 * (1 + exponent) + 1); in poly_tan()
158 shr_Xsig(&accum, -2 * (exponent + 1)); in poly_tan()
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/openbmc/phosphor-power/phosphor-regulators/src/actions/
H A Dpmbus_read_sensor_action.hpp41 * The linear_16 data format requires an exponent value. The exponent value
42 * can be specified in the constructor. Otherwise the exponent value will be
44 * not support the VOUT_MODE command. The exponent value for a device is often
64 * @param exponent Exponent value for linear_16 data format.
66 * exponent value will be read from VOUT_MODE.
71 std::optional<int8_t> exponent) : in PMBusReadSensorAction() argument
72 type{type}, command{command}, format{format}, exponent{exponent} in PMBusReadSensorAction()
88 * The linear_16 data format requires an exponent value.
89 * If an exponent value was specified in the constructor, that
90 * value will be used. Otherwise the exponent value will be obtained from
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H A Dpmbus_write_vout_command_action.hpp52 * The linear data format requires an exponent value. The exponent value can be
53 * specified in the constructor. Otherwise the exponent value will be obtained
55 * support the VOUT_MODE command. The exponent value for a device is often
85 * @param exponent Optional exponent to use to convert the volts value to
92 std::optional<int8_t> exponent, bool isVerified) : in PMBusWriteVoutCommandAction() argument
93 volts{volts}, format{format}, exponent{exponent}, in PMBusWriteVoutCommandAction()
115 * An exponent value is required to convert the volts value to linear
116 * format. If an exponent value was specified in the constructor, that
117 * value will be used. Otherwise the exponent value will be obtained from
132 * Returns the optional exponent value used to convert the volts value to
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/openbmc/phosphor-power/phosphor-regulators/src/
H A Dpmbus_utils.hpp50 * exponent.
57 * exponent. The exponent is not stored within the two bytes.
101 * - Linear format: value is an exponent
134 * - 5-bit two's complement exponent value stored in the two bytes
141 // extract exponent from most significant 5 bits in convertFromLinear()
147 // sign extend exponent in convertFromLinear()
159 int8_t exponent = static_cast<int8_t>(exponentField); in convertFromLinear() local
162 // compute value as mantissa * 2^(exponent) in convertFromLinear()
163 double decimal = mantissa * std::pow(2.0, exponent); in convertFromLinear()
173 * - 5-bit signed exponent value that is not stored in the two bytes
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/openbmc/linux/arch/arm/vfp/
H A Dvfpdouble.c43 .exponent = 2047,
50 pr_debug("VFP: %s: sign=%d exponent=%d significand=%016llx\n", in vfp_double_dump()
51 str, d->sign != 0, d->exponent, d->significand); in vfp_double_dump()
63 vd->exponent -= bits - 1; in vfp_double_normalise_denormal()
73 int exponent, shift, underflow; in vfp_double_normaliseround() local
81 if (vd->exponent == 2047 && (vd->significand == 0 || exceptions)) in vfp_double_normaliseround()
88 vd->exponent = 0; in vfp_double_normaliseround()
92 exponent = vd->exponent; in vfp_double_normaliseround()
99 exponent -= shift; in vfp_double_normaliseround()
104 vd->exponent = exponent; in vfp_double_normaliseround()
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H A Dvfpsingle.c43 .exponent = 255,
50 pr_debug("VFP: %s: sign=%d exponent=%d significand=%08x\n", in vfp_single_dump()
51 str, s->sign != 0, s->exponent, s->significand); in vfp_single_dump()
61 vs->exponent -= bits - 1; in vfp_single_normalise_denormal()
76 int exponent, shift, underflow; in __vfp_single_normaliseround() local
83 if (vs->exponent == 255 && (vs->significand == 0 || exceptions)) in __vfp_single_normaliseround()
90 vs->exponent = 0; in __vfp_single_normaliseround()
94 exponent = vs->exponent; in __vfp_single_normaliseround()
104 exponent -= shift; in __vfp_single_normaliseround()
109 vs->exponent = exponent; in __vfp_single_normaliseround()
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H A Dvfp.h150 s16 exponent; member
160 * VFP_SINGLE_EXPONENT_BITS - number of bits in the exponent
193 s->exponent = vfp_single_packed_exponent(val); in vfp_single_unpack()
197 if (s->exponent && s->exponent != 255) in vfp_single_unpack()
210 (s->exponent << VFP_SINGLE_MANTISSA_BITS) + in vfp_single_pack()
228 if (s->exponent == 255) { in vfp_single_type()
235 } else if (s->exponent == 0) { in vfp_single_type()
255 s16 exponent; member
302 s->exponent = vfp_double_packed_exponent(val); in vfp_double_unpack()
306 if (s->exponent && s->exponent != 2047) in vfp_double_unpack()
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/openbmc/phosphor-power/phosphor-regulators/test/actions/
H A Dpmbus_read_sensor_action_tests.cpp51 // Test where works: exponent value is specified in TEST()
56 std::optional<int8_t> exponent{-8}; in TEST() local
57 PMBusReadSensorAction action{type, command, format, exponent}; in TEST()
65 // Test where works: exponent value is not specified in TEST()
70 std::optional<int8_t> exponent{}; in TEST() local
71 PMBusReadSensorAction action{type, command, format, exponent}; in TEST()
85 // * 5 bit exponent: -6 = 11010 in TEST()
119 std::optional<int8_t> exponent{}; in TEST() local
120 PMBusReadSensorAction action{type, command, format, exponent}; in TEST()
128 // Test where works: linear_16 format: exponent specified in constructor in TEST()
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H A Dpmbus_write_vout_command_action_tests.cpp48 // Test where works: Volts value and exponent value are specified in TEST()
53 std::optional<int8_t> exponent{-8}; in TEST() local
55 PMBusWriteVoutCommandAction action{volts, format, exponent, isVerified}; in TEST()
68 // Test where works: Volts value and exponent value are not specified in TEST()
73 std::optional<int8_t> exponent{}; in TEST() local
75 PMBusWriteVoutCommandAction action{volts, format, exponent, isVerified}; in TEST()
91 std::optional<int8_t> exponent{}; in TEST() local
93 PMBusWriteVoutCommandAction action{volts, format, exponent, isVerified}; in TEST()
108 // Test where works: Volts value and exponent value defined in action; in TEST()
141 std::optional<int8_t> exponent{-8}; in TEST() local
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/openbmc/phosphor-power/phosphor-regulators/docs/config_file/
H A Dpmbus_write_vout_command.md25 ### Exponent For Linear Data Format
27 The linear data format requires an exponent value.
29 If the device supports the PMBus VOUT_MODE command, the exponent value can be
32 If VOUT_MODE is not supported by the device, the exponent value must be
33 specified using the "exponent" property. The exponent value can normally be
58 | exponent | no | number | Exponent value for linear data format. Can be …
71 "Get exponent from VOUT_MODE."
82 "Set output voltage. Explicitly specify volts and exponent.",
88 "exponent": -8,
H A Dpmbus_read_sensor.md39 … Two byte value with an 11-bit, two's complement mantissa and a 5-bit, two's complement exponent. |
40 …yte (16-bit), unsigned integer that is raised to the power of an exponent. The exponent is not sto…
42 ### Exponent For "linear_16" Data Format
44 The "linear_16" data format requires an exponent value.
46 If the device supports the PMBus VOUT_MODE command, the exponent value can be
49 If VOUT_MODE is not supported by the device, the exponent value must be
50 specified using the "exponent" property. The exponent value can normally be
107 | exponent | no | number | Exponent value for "linear_16" data format. Can be positive or neg…
128 "comments": ["Read output voltage from READ_VOUT. Specify exponent."],
133 "exponent": -8
/openbmc/linux/drivers/crypto/caam/
H A Dcaampkc.h23 * d the RSA private exponent
29 * d the RSA private exponent
35 * dP the first factors's CRT exponent
36 * dQ the second factors's CRT exponent
51 * @e : RSA public exponent raw byte stream
52 * @d : RSA private exponent raw byte stream
55 * @dp : RSA CRT exponent of p
56 * @dp : RSA CRT exponent of q
63 * @e_sz : length in bytes of RSA public exponent
64 * @d_sz : length in bytes of RSA private exponent
/openbmc/linux/arch/m68k/fpsp040/
H A Ddecbin.S24 | A1. Convert the bcd exponent to binary by successive adds and muls.
39 | exponent equal to the exponent from A1 and the zero count
57 | the exponent factor. This is done by multiplying the
59 | exponent sign is positive, and dividing FP0 by FP1 if
123 | Calculate exponent:
125 | 2. Calculate absolute value of exponent in d1 by mul and add.
126 | 3. Correct for exponent sign.
134 | (*) d1: accumulator for binary exponent
141 | (*) L_SCR1: copy of original exponent word
188 | ( ) L_SCR1: copy of original exponent word
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/openbmc/linux/tools/testing/selftests/kvm/
H A Dkvm_binary_stats_test.c96 * Check exponent for stats unit in stats_test()
97 * Exponent for counter should be greater than or equal to 0 in stats_test()
98 * Exponent for unit bytes should be greater than or equal to 0 in stats_test()
99 * Exponent for unit seconds should be less than or equal to 0 in stats_test()
100 * Exponent for unit clock cycles should be greater than or in stats_test()
102 * Exponent for unit boolean should be 0 in stats_test()
108 TEST_ASSERT(pdesc->exponent >= 0, in stats_test()
109 "Unsupported KVM stats (%s) exponent: %i", in stats_test()
110 pdesc->name, pdesc->exponent); in stats_test()
113 TEST_ASSERT(pdesc->exponent <= 0, in stats_test()
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/openbmc/qemu/tests/tcg/i386/
H A Dtest-i386-fprem.c42 unsigned int exponent:15; member
52 unsigned int exponent:15; member
62 .ieee_nan.exponent = 0x7fff,
70 .ieee_nan.exponent = 0x7fff,
78 .ieee.exponent = 0x7fff,
85 .ieee.exponent = 0x7fff,
92 .ieee.exponent = 0,
99 .ieee.exponent = 1,
178 au.ieee.negative, au.ieee.exponent, au.ieee.one, in do_fprem()
182 bu.ieee.negative, bu.ieee.exponent, bu.ieee.one, in do_fprem()
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/openbmc/u-boot/include/u-boot/
H A Drsa-mod-exp.h16 * The inverse, R^2, exponent. These can be typecasted and
23 const void *public_exponent; /* public exponent as byte array */
26 uint32_t exp_len; /* Exponent length in number of uint8_t */
32 * Operation: out[] = sig ^ exponent % modulus
36 * @node: Node with RSA key elements like modulus, exponent, R^2, n0inv
60 * Operation: out[] = sig ^ exponent % modulus
65 * @node: Node with RSA key elements like modulus, exponent,
/openbmc/linux/include/crypto/internal/
H A Drsa.h15 * @e : RSA public exponent raw byte stream
16 * @d : RSA private exponent raw byte stream
19 * @dp : RSA exponent d mod (p - 1) raw byte stream
20 * @dq : RSA exponent d mod (q - 1) raw byte stream
23 * @e_sz : length in bytes of RSA public exponent
24 * @d_sz : length in bytes of RSA private exponent
/openbmc/witherspoon-pfault-analysis/power-supply/
H A Drecord_manager.cpp161 // The exponent is the first 5 bits, followed by 11 bits of mantissa. in linearToInteger()
162 int8_t exponent = (data & 0xF800) >> 11; in linearToInteger() local
165 // If exponent's MSB on, then it's negative. in linearToInteger()
167 if (exponent & 0x10) in linearToInteger()
169 exponent = (~exponent) & 0x1F; in linearToInteger()
170 exponent = (exponent + 1) * -1; in linearToInteger()
181 auto value = static_cast<float>(mantissa) * pow(2, exponent); in linearToInteger()

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