msvcr120: Add expm1.

configure

@@ -17421,6 +17421,8 @@ for ac_func in \
 	erff \
 	exp2 \
 	exp2f \
+	expm1 \
+	expm1f \
 	lgamma \
 	lgammaf \
 	llrint \

configure.ac

@@ -2608,6 +2608,8 @@ AC_CHECK_FUNCS(\
 	erff \
 	exp2 \
 	exp2f \
+	expm1 \
+	expm1f \
 	lgamma \
 	lgammaf \
 	llrint \

dlls/api-ms-win-crt-math-l1-1-0/api-ms-win-crt-math-l1-1-0.spec

@@ -231,9 +231,9 @@
 @ cdecl exp2f(float) ucrtbase.exp2f
 @ cdecl exp2l(double) ucrtbase.exp2l
 @ cdecl -arch=arm,x86_64 expf(float) ucrtbase.expf
-@ stub expm1
-@ stub expm1f
-@ stub expm1l
+@ cdecl expm1(double) ucrtbase.expm1
+@ cdecl expm1f(float) ucrtbase.expm1f
+@ cdecl expm1l(double) ucrtbase.expm1l
 @ cdecl fabs(double) ucrtbase.fabs
 @ cdecl -arch=arm fabsf(float) ucrtbase.fabsf
 @ stub fdim

dlls/msvcr120/msvcr120.spec

@@ -2134,9 +2134,9 @@
 @ cdecl exp2f(float) MSVCR120_exp2f
 @ cdecl exp2l(double) MSVCR120_exp2l
 @ cdecl -arch=arm,x86_64 expf(float) MSVCRT_expf
-@ stub expm1
-@ stub expm1f
-@ stub expm1l
+@ cdecl expm1(double) MSVCR120_expm1
+@ cdecl expm1f(float) MSVCR120_expm1f
+@ cdecl expm1l(double) MSVCR120_expm1l
 @ cdecl fabs(double) MSVCRT_fabs
 @ cdecl -arch=arm,x86_64 fabsf(float) MSVCRT_fabsf
 @ cdecl fclose(ptr) MSVCRT_fclose

dlls/msvcr120_app/msvcr120_app.spec

@@ -1800,9 +1800,9 @@
 @ cdecl exp2f(float) msvcr120.exp2f
 @ cdecl exp2l(double) msvcr120.exp2l
 @ cdecl -arch=arm,x86_64 expf(float) msvcr120.expf
-@ stub expm1
-@ stub expm1f
-@ stub expm1l
+@ cdecl expm1(double) msvcr120.expm1
+@ cdecl expm1f(float) msvcr120.expm1f
+@ cdecl expm1l(double) msvcr120.expm1l
 @ cdecl fabs(double) msvcr120.fabs
 @ cdecl -arch=arm,x86_64 fabsf(float) msvcr120.fabsf
 @ cdecl fclose(ptr) msvcr120.fclose

dlls/msvcrt/math.c

@@ -2412,6 +2412,42 @@ LDOUBLE CDECL MSVCR120_exp2l(LDOUBLE x)
 }
 
 /*********************************************************************
+ *      expm1 (MSVCR120.@)
+ */
+double CDECL MSVCR120_expm1(double x)
+{
+#ifdef HAVE_EXPM1
+    double ret = expm1(x);
+#else
+    double ret = exp(x) - 1;
+#endif
+    if (!isfinite(ret)) *MSVCRT__errno() = MSVCRT_ERANGE;
+    return ret;
+}
+
+/*********************************************************************
+ *      expm1f (MSVCR120.@)
+ */
+float CDECL MSVCR120_expm1f(float x)
+{
+#ifdef HAVE_EXPM1F
+    double ret = expm1f(x);
+#else
+    double ret = exp(x) - 1;
+#endif
+    if (!isfinite(ret)) *MSVCRT__errno() = MSVCRT_ERANGE;
+    return ret;
+}
+
+/*********************************************************************
+ *      expm1l (MSVCR120.@)
+ */
+LDOUBLE CDECL MSVCR120_expm1l(LDOUBLE x)
+{
+    return MSVCR120_expm1(x);
+}
+
+/*********************************************************************
  *      log2 (MSVCR120.@)
  */
 double CDECL MSVCR120_log2(double x)

dlls/ucrtbase/ucrtbase.spec

@@ -2277,9 +2277,9 @@
 @ cdecl exp2f(float) MSVCR120_exp2f
 @ cdecl exp2l(double) MSVCR120_exp2l
 @ cdecl -arch=arm,x86_64 expf(float) MSVCRT_expf
-@ stub expm1
-@ stub expm1f
-@ stub expm1l
+@ cdecl expm1(double) MSVCR120_expm1
+@ cdecl expm1f(float) MSVCR120_expm1f
+@ cdecl expm1l(double) MSVCR120_expm1l
 @ cdecl fabs(double) MSVCRT_fabs
 @ cdecl -arch=arm fabsf(float) MSVCRT_fabsf
 @ cdecl fclose(ptr) MSVCRT_fclose

include/config.h.in

@@ -156,6 +156,12 @@
 /* Define to 1 if you have the `exp2f' function. */
 #undef HAVE_EXP2F
 
+/* Define to 1 if you have the `expm1' function. */
+#undef HAVE_EXPM1
+
+/* Define to 1 if you have the `expm1f' function. */
+#undef HAVE_EXPM1F
+
 /* Define to 1 if you have the `fallocate' function. */
 #undef HAVE_FALLOCATE