diff --git a/src/plugins_3rdparty/hmm3/src/hmmer3/hmmer3_funcs.cpp b/src/plugins_3rdparty/hmm3/src/hmmer3/hmmer3_funcs.cpp
index b458c12..23fa49b 100644
--- a/src/plugins_3rdparty/hmm3/src/hmmer3/hmmer3_funcs.cpp
+++ b/src/plugins_3rdparty/hmm3/src/hmmer3/hmmer3_funcs.cpp
@@ -33,7 +33,7 @@ float infinity() {
 }
 
 bool isfin( float x ) {
-    return !isnan( x ) && !isinf( x );
+    return !std::isnan( x ) && !std::isinf( x );
 }
 
 const char TERM_SYM = '\0';
diff --git a/src/plugins_3rdparty/hmm3/src/hmmer3/impl_sse/decoding.cpp b/src/plugins_3rdparty/hmm3/src/hmmer3/impl_sse/decoding.cpp
index 9050f1c..6032970 100644
--- a/src/plugins_3rdparty/hmm3/src/hmmer3/impl_sse/decoding.cpp
+++ b/src/plugins_3rdparty/hmm3/src/hmmer3/impl_sse/decoding.cpp
@@ -134,7 +134,7 @@ p7_Decoding(const P7_OPROFILE *om, const P7_OMX *oxf, P7_OMX *oxb, P7_OMX *pp)
         if (oxb->has_own_scales) scaleproduct *= oxf->xmx[i*p7X_NXCELLS+p7X_SCALE] /  oxb->xmx[i*p7X_NXCELLS+p7X_SCALE];
     }
 
-    if (isinf(scaleproduct)) return eslERANGE;
+    if (std::isinf(scaleproduct)) return eslERANGE;
     else                     return eslOK;
 }
 
@@ -188,7 +188,7 @@ p7_DomainDecoding(const P7_OPROFILE *om, const P7_OMX *oxf, const P7_OMX *oxb, P
     }
     ddef->L = oxf->L;
 
-    if (isinf(scaleproduct)) return eslERANGE;
+    if (std::isinf(scaleproduct)) return eslERANGE;
     else                     return eslOK;
 }
 /*------------------ end, posterior decoding --------------------*/
diff --git a/src/plugins_3rdparty/hmm3/src/hmmer3/impl_sse/fwdback.cpp b/src/plugins_3rdparty/hmm3/src/hmmer3/impl_sse/fwdback.cpp
index 5bafaa4..413a6fe 100644
--- a/src/plugins_3rdparty/hmm3/src/hmmer3/impl_sse/fwdback.cpp
+++ b/src/plugins_3rdparty/hmm3/src/hmmer3/impl_sse/fwdback.cpp
@@ -465,9 +465,9 @@ forward_engine(int do_full, const ESL_DSQ *dsq, int L, const P7_OPROFILE *om, P7
     /* On an underflow (which shouldn't happen), we counterintuitively return infinity:
     * the effect of this is to force the caller to rescore us with full range.
     */
-    if       (isnan(xC))      ESL_EXCEPTION(eslERANGE, "forward score is NaN");
+    if       (std::isnan(xC))      ESL_EXCEPTION(eslERANGE, "forward score is NaN");
     else if  (L>0 && xC == 0.0)      ESL_EXCEPTION(eslERANGE, "forward score underflow (is 0.0)");
-    else if  (isinf(xC) == 1) ESL_EXCEPTION(eslERANGE, "forward score overflow (is infinity)");
+    else if  (std::isinf(xC) == 1) ESL_EXCEPTION(eslERANGE, "forward score overflow (is infinity)");
 
     if (opt_sc != NULL) *opt_sc = ox->totscale + log((double)(xC * om->xf[p7O_C][p7O_MOVE]));
     return eslOK;
@@ -742,9 +742,9 @@ backward_engine(int do_full, const ESL_DSQ *dsq, int L, const P7_OPROFILE *om, c
     if (bck->debugging) p7_omx_DumpFBRow(bck, TRUE, 0, 9, 4, bck->xmx[p7X_E], bck->xmx[p7X_N],  bck->xmx[p7X_J], bck->xmx[p7X_B],  bck->xmx[p7X_C]);	/* logify=TRUE, <rowi>=0, width=9, precision=4*/
 #endif
 
-    if       (isnan(xN))      ESL_EXCEPTION(eslERANGE, "backward score is NaN");
+    if       (std::isnan(xN))      ESL_EXCEPTION(eslERANGE, "backward score is NaN");
     else if  (L>0 && xN == 0.0)      ESL_EXCEPTION(eslERANGE, "backward score underflow (is 0.0)");
-    else if  (isinf(xN) == 1) ESL_EXCEPTION(eslERANGE, "backward score overflow (is infinity)");
+    else if  (std::isinf(xN) == 1) ESL_EXCEPTION(eslERANGE, "backward score overflow (is infinity)");
 
     if (opt_sc != NULL) *opt_sc = bck->totscale + log((double)xN);
     return eslOK;