Searched defs:exp (Results 1 - 25 of 41) sorted by relevance

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/frameworks/av/media/libstagefright/codecs/amrnb/common/src/
H A Dinv_sqrt.cpp158 Word16 exp, i, a, tmp;
169 exp = norm_l (L_x);
170 L_x = L_shl (L_x, exp); // L_x is normalize
172 exp = sub (30, exp);
174 if ((exp & 1) == 0) // If exponent even -> shift right
178 exp = shr (exp, 1);
179 exp = add (exp,
226 Word16 exp; local
239 L_x <<= exp; /* L_x is normalize */ local
266 L_y >>= exp; /* denormalization, exp always 0< exp < 31 */ local
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H A Dlog2.cpp170 Word16 exp; local
174 exp = norm_l(L_x);
175 result = L_x << exp;
176 Log2_norm(result, exp, pExponent, pFraction);
H A Dlog2_norm.cpp92 exp = number of shifts required to normalize L_x; it is of type Word16
139 Word16 exp, // (i) : norm_l (L_x)
154 *exponent = sub (30, exp);
198 Word16 exp, /* (i) : norm_l (L_x) */
214 *exponent = 30 - exp;
196 Log2_norm( Word32 L_x, Word16 exp, Word16 *exponent, Word16 *fraction ) argument
H A Dpow2.cpp130 Word16 exp, i, a, tmp;
143 exp = sub (30, exponent);
144 L_x = L_shr_r (L_x, exp);
182 Word16 exp, i, a, tmp; local
198 exp = sub(30, exponent, pOverflow);
199 L_x = L_shr_r(L_x, exp, pOverflow);
H A Daz_lsp.cpp150 F(w) = 2 exp(-j5w) C(x)
389 Word16 x, y, sign, exp;
492 exp = norm_s (y);
493 y = shl (y, exp);
496 t0 = L_shr (t0, sub (20, exp));
583 Word16 exp; local
687 exp = norm_s(y);
688 y <<= exp; local
691 y = ((Word32)x * y) >> (19 - exp);
H A Dgc_pred.cpp275 Word16 exp, frac;
303 Log2(ener_code, &exp, &frac);
304 ener_code = L_Comp (sub (exp, 30), frac); // Q16 for log()
330 * (store exp and frac for pow2()) *
349 Log2_norm (ener_code, exp_code, &exp, &frac);
352 L_tmp = Mpy_32_16(exp, frac, -24660); // Q0.Q15 * Q13 -> Q14
386 // <xn xn> = <xn xn>*2^11*2^exp * 2^exp_en
485 Word16 exp, frac; local
534 Log2(ener_code, &exp, &frac, pOverflow);
539 L_temp1 = (Word32)(exp
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/frameworks/av/media/libstagefright/codecs/amrwbenc/src/
H A Dscale.c30 Word16 exp /* (i) : exponent: x = round(x << exp) */
35 if(exp > 0)
39 L_tmp = L_shl2(x[i], 16 + exp);
45 exp = -exp;
49 L_tmp >>= exp; local
H A Dlog2.c40 * PURPOSE: Computes log2(L_x, exp), where L_x is positive and
41 * normalized, and exp is the normalisation exponent
58 Word16 exp, /* (i) : norm_l (L_x) */
71 *exponent = (30 - exp);
104 Word16 exp; local
106 exp = norm_l(L_x);
107 Log2_norm ((L_x << exp), exp, exponent, fraction);
56 Log2_norm( Word32 L_x, Word16 exp, Word16 *exponent, Word16 *fraction ) argument
H A Dvoicefac.c37 Word16 tmp, exp, ener1, exp1, ener2, exp2; local
47 exp = norm_l(L_tmp);
48 tmp = extract_h(L_tmp << exp);
50 exp1 = exp1 - exp - 10; /* 10 -> gain_pit Q14 to Q9 */
58 exp = norm_s(gain_code);
59 tmp = gain_code << exp;
62 exp2 = exp2 - (exp + exp);
H A Dmath_op.c35 | Word32 frac, Word16 exp : L_32 = frac << exp-31 (normalised format) |
61 Word16 exp; local
63 exp = norm_l(L_x);
64 L_x = (L_x << exp); /* L_x is normalized */
65 exp = (31 - exp);
66 Isqrt_n(&L_x, &exp);
67 L_y = (L_x << exp); /* denormalization */
76 | if value is negative or zero, result is 1 (frac=7fffffff, exp
163 Word16 exp, i, a, tmp; local
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H A Dhp_wsp.c56 void scale_mem_Hp_wsp(Word16 mem[], Word16 exp) argument
64 L_tmp = L_shl(L_tmp, exp);
72 L_tmp = L_shl(L_tmp, exp);
H A Daz_isp.c68 Word16 x, y, sign, exp; local
152 exp = norm_s(y);
153 y = y << exp;
156 t0 = (t0 >> (19 - exp));
/frameworks/av/media/libstagefright/codecs/amrwb/src/
H A Dagc2_amr_wb.cpp124 int16 i, exp; local
145 exp = normalize_amr_wb(s) - 1;
146 gain_out = amr_wb_round(s << exp);
167 exp -= i;
175 s = shr_int32(s, exp); /* add exponent */
H A Dvoice_factor.cpp127 int16 i, tmp, exp, ener1, exp1, ener2, exp2; local
133 exp = normalize_amr_wb(L_tmp);
135 tmp = (int16)((L_tmp << exp) >> 16);
137 exp1 -= (exp + 10); /* 10 -> gain_pit Q14 to Q9 */
141 exp = norm_s(gain_code);
142 tmp = shl_int16(gain_code, exp);
145 exp2 -= (exp << 1);
H A Disf_extrapolation.cpp123 int16 exp, exp2, hi, lo; local
153 exp = norm_s(tmp);
156 IsfDiff[i] = shl_int16(IsfDiff[i], exp);
158 mean = shl_int16(mean, exp);
227 exp = norm_s(tmp);
228 exp--;
229 tmp <<= exp; local
232 exp = exp2 - exp;
237 IsfDiff[i - (M - 1)] = shl_int16(tmp, exp);
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H A Dsynthesis_amr_wb.cpp150 int16 i, fac, exp; local
255 tmp = extract_h(Dot_product12(HF, HF, L_SUBFR16k, &exp));
260 exp += 1;
263 exp -= exp_ener;
264 one_ov_sqrt_norm(&L_tmp, &exp);
265 L_tmp = shl_int32(L_tmp, exp + 1); /* L_tmp x 2, L_tmp in Q31 */
301 exp = normalize_amr_wb(L_tmp);
303 ener = (int16)((L_tmp << exp) >> 16); /* ener = r[0] */
304 tmp = (int16)((L_tmp2 << exp) >> 16); /* tmp = r[1] */
/frameworks/av/media/libstagefright/codecs/amrnb/dec/src/
H A Dex_ctrl.cpp160 Word16 i, exp; local
191 exp = norm_s(excEnergy);
192 excEnergy = shl(excEnergy, exp, pOverflow);
195 t0 = L_shr(t0, sub(20, exp, pOverflow), pOverflow);
H A Dd_gain_c.cpp199 Word16 gcode0, exp, frac; local
213 * = 2^exp + 2^frac *
217 gc_pred(pred_state, mode, code, &exp, &frac,
229 gcode0 = (Word16)(Pow2(exp, frac, pOverflow)); /* predicted gain */
237 L_tmp = L_shr(L_tmp, sub(9, exp, pOverflow), pOverflow);
H A Ddec_gain.cpp195 Word16 exp; local
242 Log2(temp1, &exp, &frac, pOverflow);
243 exp = sub(exp, 12, pOverflow);
246 temp2 = shl(exp, 10, pOverflow);
250 L_tmp = Mpy_32_16(exp, frac, 24660, pOverflow);
270 * = 2^exp + 2^frac *
272 * gcode0 (Q14) = 2^14*2^frac = gc0 * 2^(14-exp) *
275 gc_pred(pred_state, mode, code, &exp, &frac, NULL, NULL, pOverflow);
289 temp1 = sub(10, exp, pOverflo
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H A Dagc.cpp653 Word16 i, exp;
665 exp = sub (norm_l (s), 1);
666 gain_out = pv_round (L_shl (s, exp));
679 exp = sub (exp, i);
687 s = L_shr (s, exp); // add exponent
749 Word16 exp; local
768 exp = norm_l(s) - 1;
770 L_temp = L_shl(s, exp, pOverflow);
789 exp
972 Word16 exp; local
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/frameworks/base/core/java/android/util/
H A DFloatMath.java104 public static float exp(float value) { method in class:FloatMath
105 return (float) Math.exp(value);
/frameworks/av/media/libeffects/testlibs/
H A DEffectsMath.c51 int32_t exp = 31 - __builtin_clz(x); local
52 uint32_t segStart = x >> (exp - 6);
56 segStart <<= exp - 6;
58 return (exp << 15) + log + (((x - segStart) * (logEnd - log)) >> (exp - 6));
89 uint32_t exp = gExpTab[j]; local
92 return ((exp << 9) + (expEnd - exp) * x) >> (31 - i);
/frameworks/av/media/libstagefright/codecs/amrnb/enc/src/
H A Dcalc_en.cpp158 Word16 i, exp, tmp;
175 exp = norm_l(s);
176 frac_en[0] = extract_h(L_shl(s, exp));
177 exp_en[0] = sub(15, exp);
185 exp = norm_l(s);
186 frac_en[1] = extract_h(L_shl(s, exp));
187 exp_en[1] = sub(15, exp);
194 exp = norm_l(s);
195 frac_en[2] = extract_h(L_shl(s, exp));
196 exp_en[2] = sub(16-14, exp);
284 Word16 exp; /* nunmber of '0's or '1's before MSB != 0 */ local
612 Word16 exp; /* number of '0's or '1's before MSB != 0 */ local
802 Word16 exp; local
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H A Dqgain475.cpp410 Word16 g_code, exp, frac, tmp;
439 Log2 (L_deposit_l (g_code), &exp, &frac); // Log2(x Q12) = log2(x) + 12
440 exp = sub(exp, 12);
443 qua_ener_MR122 = add (tmp, shl (exp, 10));
445 L_tmp = Mpy_32_16(exp, frac, 24660); // 24660 Q12 ~= 6.0206 = 20*log10(2)
485 Word16 exp; local
519 Log2((Word32) g_code, &exp, &frac, pOverflow);
520 exp -= 12;
523 qua_ener_MR122 = exp << 1
703 Word16 exp; local
1185 Word16 exp; local
1258 sf1_frac_target_en >>= exp; local
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H A Dqgain795.cpp499 Word16 exp; local
574 exp = sub(exp_gcode0, 10, pOverflow);
575 exp_coeff[2] = add(exp_en[2], exp, pOverflow);
580 exp = sub(shl(exp_gcode0, 1, pOverflow), 7, pOverflow);
581 exp_coeff[3] = add(exp_en[3], exp, pOverflow);
590 -> result = val >> (exp/2)
593 L_t0 = sqrt_l_exp(L_tmp, &exp, pOverflow); /* normalization included in sqrt_l_exp */
594 exp = add(exp, 47, pOverflow);
595 exp_coeff[0] = sub(exp_en[0], exp, pOverflo
842 Word16 exp; local
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