.class final Lcom/google/common/math/DoubleUtils; .super Ljava/lang/Object; .source "DoubleUtils.java" # static fields .field static final EXPONENT_BIAS:I = 0x3ff .field static final EXPONENT_MASK:J = 0x7ff0000000000000L .field static final IMPLICIT_BIT:J = 0x10000000000000L .field static final MAX_EXPONENT:I = 0x3ff .field static final MIN_EXPONENT:I = -0x3fe .field private static final ONE_BITS:J .field static final SIGNIFICAND_BITS:I = 0x34 .field static final SIGNIFICAND_MASK:J = 0xfffffffffffffL .field static final SIGN_MASK:J = -0x8000000000000000L # direct methods .method static constructor ()V .locals 2 .prologue .line 173 const-wide/high16 v0, 0x3ff0000000000000L # 1.0 invoke-static {v0, v1}, Ljava/lang/Double;->doubleToRawLongBits(D)J move-result-wide v0 sput-wide v0, Lcom/google/common/math/DoubleUtils;->ONE_BITS:J return-void .end method .method private constructor ()V .locals 0 .prologue .line 33 invoke-direct {p0}, Ljava/lang/Object;->()V .line 34 return-void .end method .method static bigToDouble(Ljava/math/BigInteger;)D .locals 14 .prologue const-wide/16 v12, 0x0 const/4 v2, 0x1 const-wide/16 v10, 0x1 .line 119 invoke-virtual {p0}, Ljava/math/BigInteger;->abs()Ljava/math/BigInteger; move-result-object v3 .line 120 invoke-virtual {v3}, Ljava/math/BigInteger;->bitLength()I move-result v0 add-int/lit8 v4, v0, -0x1 .line 122 const/16 v0, 0x3f if-ge v4, v0, :cond_0 .line 123 invoke-virtual {p0}, Ljava/math/BigInteger;->longValue()J move-result-wide v0 long-to-double v0, v0 .line 158 :goto_0 return-wide v0 .line 124 :cond_0 const/16 v0, 0x3ff if-le v4, v0, :cond_1 .line 125 invoke-virtual {p0}, Ljava/math/BigInteger;->signum()I move-result v0 int-to-double v0, v0 const-wide/high16 v2, 0x7ff0000000000000L # Double.POSITIVE_INFINITY mul-double/2addr v0, v2 goto :goto_0 .line 136 :cond_1 add-int/lit8 v0, v4, -0x34 add-int/lit8 v5, v0, -0x1 .line 137 invoke-virtual {v3, v5}, Ljava/math/BigInteger;->shiftRight(I)Ljava/math/BigInteger; move-result-object v0 invoke-virtual {v0}, Ljava/math/BigInteger;->longValue()J move-result-wide v6 .line 138 shr-long v0, v6, v2 .line 139 const-wide v8, 0xfffffffffffffL and-long/2addr v0, v8 .line 146 and-long/2addr v6, v10 cmp-long v6, v6, v12 if-eqz v6, :cond_4 and-long v6, v0, v10 cmp-long v6, v6, v12 if-nez v6, :cond_2 invoke-virtual {v3}, Ljava/math/BigInteger;->getLowestSetBit()I move-result v3 if-ge v3, v5, :cond_4 .line 148 :cond_2 :goto_1 if-eqz v2, :cond_3 add-long/2addr v0, v10 .line 149 :cond_3 add-int/lit16 v2, v4, 0x3ff int-to-long v2, v2 const/16 v4, 0x34 shl-long/2addr v2, v4 .line 150 add-long/2addr v0, v2 .line 157 invoke-virtual {p0}, Ljava/math/BigInteger;->signum()I move-result v2 int-to-long v2, v2 const-wide/high16 v4, -0x8000000000000000L and-long/2addr v2, v4 or-long/2addr v0, v2 .line 158 invoke-static {v0, v1}, Ljava/lang/Double;->longBitsToDouble(J)D move-result-wide v0 goto :goto_0 .line 146 :cond_4 const/4 v2, 0x0 goto :goto_1 .end method .method static copySign(DD)D .locals 6 .prologue .line 95 invoke-static {p0, p1}, Ljava/lang/Double;->doubleToRawLongBits(D)J move-result-wide v0 const-wide v2, 0x7fffffffffffffffL and-long/2addr v0, v2 .line 96 invoke-static {p2, p3}, Ljava/lang/Double;->doubleToRawLongBits(D)J move-result-wide v2 const-wide/high16 v4, -0x8000000000000000L and-long/2addr v2, v4 or-long/2addr v0, v2 .line 97 invoke-static {v0, v1}, Ljava/lang/Double;->longBitsToDouble(J)D move-result-wide v0 return-wide v0 .end method .method static ensureNonNegative(D)D .locals 4 .prologue const-wide/16 v2, 0x0 .line 165 invoke-static {p0, p1}, Ljava/lang/Double;->isNaN(D)Z move-result v0 if-nez v0, :cond_0 const/4 v0, 0x1 :goto_0 invoke-static {v0}, Lcom/google/common/base/Preconditions;->checkArgument(Z)V .line 166 cmpl-double v0, p0, v2 if-lez v0, :cond_1 .line 169 :goto_1 return-wide p0 .line 165 :cond_0 const/4 v0, 0x0 goto :goto_0 :cond_1 move-wide p0, v2 .line 169 goto :goto_1 .end method .method static getExponent(D)I .locals 4 .prologue .line 80 invoke-static {p0, p1}, Ljava/lang/Double;->doubleToRawLongBits(D)J move-result-wide v0 const-wide/high16 v2, 0x7ff0000000000000L # Double.POSITIVE_INFINITY and-long/2addr v0, v2 .line 81 const/16 v2, 0x34 ushr-long/2addr v0, v2 long-to-int v0, v0 add-int/lit16 v0, v0, -0x3ff return v0 .end method .method static getSignificand(D)J .locals 6 .prologue .line 85 invoke-static {p0, p1}, Lcom/google/common/math/DoubleUtils;->isFinite(D)Z move-result v0 const-string v1, "not a normal value" invoke-static {v0, v1}, Lcom/google/common/base/Preconditions;->checkArgument(ZLjava/lang/Object;)V .line 86 invoke-static {p0, p1}, Lcom/google/common/math/DoubleUtils;->getExponent(D)I move-result v0 .line 87 invoke-static {p0, p1}, Ljava/lang/Double;->doubleToRawLongBits(D)J move-result-wide v2 .line 88 const-wide v4, 0xfffffffffffffL and-long/2addr v2, v4 .line 89 const/16 v1, -0x3ff if-ne v0, v1, :cond_0 const/4 v0, 0x1 shl-long v0, v2, v0 :goto_0 return-wide v0 :cond_0 const-wide/high16 v0, 0x10000000000000L or-long/2addr v0, v2 goto :goto_0 .end method .method static isFinite(D)Z .locals 2 .prologue .line 101 invoke-static {p0, p1}, Lcom/google/common/math/DoubleUtils;->getExponent(D)I move-result v0 const/16 v1, 0x3ff if-gt v0, v1, :cond_0 const/4 v0, 0x1 :goto_0 return v0 :cond_0 const/4 v0, 0x0 goto :goto_0 .end method .method static isNormal(D)Z .locals 2 .prologue .line 105 invoke-static {p0, p1}, Lcom/google/common/math/DoubleUtils;->getExponent(D)I move-result v0 const/16 v1, -0x3fe if-lt v0, v1, :cond_0 const/4 v0, 0x1 :goto_0 return v0 :cond_0 const/4 v0, 0x0 goto :goto_0 .end method .method static nextDown(D)D .locals 2 .prologue .line 37 neg-double v0, p0 invoke-static {v0, v1}, Lcom/google/common/math/DoubleUtils;->nextUp(D)D move-result-wide v0 neg-double v0, v0 return-wide v0 .end method .method static nextUp(D)D .locals 6 .prologue .line 41 invoke-static {p0, p1}, Ljava/lang/Double;->isNaN(D)Z move-result v0 if-eqz v0, :cond_1 .line 50 :cond_0 :goto_0 return-wide p0 .line 43 :cond_1 const-wide/16 v0, 0x0 cmpl-double v0, p0, v0 if-nez v0, :cond_2 .line 44 const-wide/16 p0, 0x1 goto :goto_0 .line 45 :cond_2 const-wide/high16 v0, 0x7ff0000000000000L # Double.POSITIVE_INFINITY cmpl-double v0, p0, v0 if-eqz v0, :cond_0 .line 48 invoke-static {p0, p1}, Ljava/lang/Double;->doubleToRawLongBits(D)J move-result-wide v0 .line 49 const/16 v2, 0x3f shr-long v2, v0, v2 const-wide/16 v4, 0x1 or-long/2addr v2, v4 add-long/2addr v0, v2 .line 50 invoke-static {v0, v1}, Ljava/lang/Double;->longBitsToDouble(J)D move-result-wide p0 goto :goto_0 .end method .method static scaleNormalize(D)D .locals 4 .prologue .line 113 invoke-static {p0, p1}, Ljava/lang/Double;->doubleToRawLongBits(D)J move-result-wide v0 const-wide v2, 0xfffffffffffffL and-long/2addr v0, v2 .line 114 sget-wide v2, Lcom/google/common/math/DoubleUtils;->ONE_BITS:J or-long/2addr v0, v2 invoke-static {v0, v1}, Ljava/lang/Double;->longBitsToDouble(J)D move-result-wide v0 return-wide v0 .end method