Look for and use atan2f, log10f, and floorf

Alc/ALu.c

@@ -717,7 +717,7 @@ ALvoid CalcSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
             // the listener.  This prevents +0 and -0 Z from producing
             // inconsistent panning.
             ev = aluAsin(Position[1]);
-            az = atan2(Position[0], -Position[2]*ZScale);
+            az = aluAtan2(Position[0], -Position[2]*ZScale);
         }
 
         // Check to see if the HRIR is already moving.

Alc/alcReverb.c

@@ -757,7 +757,7 @@ static __inline ALfloat CalcDecayCoeff(ALfloat length, ALfloat decayTime)
 // reaches -60 dB.
 static __inline ALfloat CalcDecayLength(ALfloat coeff, ALfloat decayTime)
 {
-    return log10(coeff) * decayTime / -3.0f/*log10(0.001)*/;
+    return aluLog10(coeff) * decayTime / aluLog10(0.001)/*-60 dB*/;
 }
 
 // Calculate the high frequency parameter for the I3DL2 coefficient

Alc/hrtf.c

@@ -85,7 +85,7 @@ static void CalcAzIndices(ALuint evidx, ALfloat az, ALuint *azidx, ALfloat *azmu
     az = (F_PI*2.0f + az) * azCount[evidx] / (F_PI*2.0f);
     azidx[0] = (ALuint)az % azCount[evidx];
     azidx[1] = (azidx[0] + 1) % azCount[evidx];
-    *azmu = az - floor(az);
+    *azmu = az - aluFloor(az);
 }
 
 // Calculates the normalized HRTF transition factor (delta) from the changes
@@ -99,7 +99,7 @@ ALfloat CalcHrtfDelta(ALfloat oldGain, ALfloat newGain, const ALfloat olddir[3],
     // Calculate the normalized dB gain change.
     newGain = maxf(newGain, 0.0001f);
     oldGain = maxf(oldGain, 0.0001f);
-    gainChange = aluFabs(log10(newGain / oldGain) / log10(0.0001f));
+    gainChange = aluFabs(aluLog10(newGain / oldGain) / aluLog10(0.0001f));
 
     // Calculate the normalized listener to source angle change when there is
     // enough gain to notice it.
@@ -231,7 +231,7 @@ ALuint GetMovingHrtfCoeffs(const struct Hrtf *Hrtf, ALfloat elevation, ALfloat a
     ridx[3] = evOffset[evidx[1]] + ((azCount[evidx[1]]-azidx[1]) % azCount[evidx[1]]);
 
     // Calculate the stepping parameters.
-    delta = maxf(floor(delta*(Hrtf->sampleRate*0.015f) + 0.5f), 1.0f);
+    delta = maxf(aluFloor(delta*(Hrtf->sampleRate*0.015f) + 0.5f), 1.0f);
     step = 1.0f / delta;
 
     // Calculate the normalized and attenuated target HRIR coefficients using

CMakeLists.txt

@@ -231,14 +231,17 @@ IF(HAVE_LIBM)
 ENDIF()
 
 
-CHECK_SYMBOL_EXISTS(powf  math.h HAVE_POWF)
-CHECK_SYMBOL_EXISTS(sqrtf math.h HAVE_SQRTF)
-CHECK_SYMBOL_EXISTS(cosf  math.h HAVE_COSF)
-CHECK_SYMBOL_EXISTS(sinf  math.h HAVE_SINF)
-CHECK_SYMBOL_EXISTS(acosf math.h HAVE_ACOSF)
-CHECK_SYMBOL_EXISTS(asinf math.h HAVE_ASINF)
-CHECK_SYMBOL_EXISTS(atanf math.h HAVE_ATANF)
-CHECK_SYMBOL_EXISTS(fabsf math.h HAVE_FABSF)
+CHECK_SYMBOL_EXISTS(powf   math.h HAVE_POWF)
+CHECK_SYMBOL_EXISTS(sqrtf  math.h HAVE_SQRTF)
+CHECK_SYMBOL_EXISTS(cosf   math.h HAVE_COSF)
+CHECK_SYMBOL_EXISTS(sinf   math.h HAVE_SINF)
+CHECK_SYMBOL_EXISTS(acosf  math.h HAVE_ACOSF)
+CHECK_SYMBOL_EXISTS(asinf  math.h HAVE_ASINF)
+CHECK_SYMBOL_EXISTS(atanf  math.h HAVE_ATANF)
+CHECK_SYMBOL_EXISTS(atan2f math.h HAVE_ATAN2F)
+CHECK_SYMBOL_EXISTS(fabsf  math.h HAVE_FABSF)
+CHECK_SYMBOL_EXISTS(log10f math.h HAVE_LOG10F)
+CHECK_SYMBOL_EXISTS(floorf math.h HAVE_FLOORF)
 
 IF(HAVE_FENV_H)
     CHECK_SYMBOL_EXISTS(fesetround fenv.h HAVE_FESETROUND)

OpenAL32/Include/alu.h

@@ -64,12 +64,30 @@
 #define aluAtan(x) ((ALfloat)atan((double)(x)))
 #endif
 
+#ifdef HAVE_ATAN2F
+#define aluAtan2(x,y) (atan2f((x),(y)))
+#else
+#define aluAtan2(x,y) ((ALfloat)atan2((double)(x),(double)(y)))
+#endif
+
 #ifdef HAVE_FABSF
 #define aluFabs(x) (fabsf((x)))
 #else
 #define aluFabs(x) ((ALfloat)fabs((double)(x)))
 #endif
 
+#ifdef HAVE_LOG10F
+#define aluLog10(x) (log10f((x)))
+#else
+#define aluLog10(x) ((ALfloat)log10((double)(x)))
+#endif
+
+#ifdef HAVE_FLOORF
+#define aluFloor(x) (floorf((x)))
+#else
+#define aluFloor(x) ((ALfloat)floor((double)(x)))
+#endif
+
 #define QUADRANT_NUM  128
 #define LUT_NUM       (4 * QUADRANT_NUM)
 

config.h.in

@@ -68,9 +68,18 @@
 /* Define if we have the atanf function */
 #cmakedefine HAVE_ATANF
 
+/* Define if we have the atan2f function */
+#cmakedefine HAVE_ATAN2F
+
 /* Define if we have the fabsf function */
 #cmakedefine HAVE_FABSF
 
+/* Define if we have the log10f function */
+#cmakedefine HAVE_LOG10F
+
+/* Define if we have the floorf function */
+#cmakedefine HAVE_FLOORF
+
 /* Define if we have the strtof function */
 #cmakedefine HAVE_STRTOF