diff --git a/lib/msun/src/s_ccosh.c b/lib/msun/src/s_ccosh.c
index 3d46c993c6f1..14a8931742dc 100644
--- a/lib/msun/src/s_ccosh.c
+++ b/lib/msun/src/s_ccosh.c
@@ -1,156 +1,165 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
  *
- * Copyright (c) 2005 Bruce D. Evans and Steven G. Kargl
+ * Copyright (c) 2005-2025 Bruce D. Evans and Steven G. Kargl
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice unmodified, this list of conditions, and the following
  *    disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 /*
  * Hyperbolic cosine of a complex argument z = x + i y.
  *
  * cosh(z) = cosh(x+iy)
  *         = cosh(x) cos(y) + i sinh(x) sin(y).
  *
  * Exceptional values are noted in the comments within the source code.
  * These values and the return value were taken from n1124.pdf.
  * The sign of the result for some exceptional values is unspecified but
  * must satisfy both cosh(conj(z)) == conj(cosh(z)) and cosh(-z) == cosh(z).
  */
 
 #include <complex.h>
 #include <math.h>
 
 #include "math_private.h"
 
 static const double huge = 0x1p1023;
 
 double complex
 ccosh(double complex z)
 {
-	double x, y, h;
+	double c, h, s, x, y;
 	int32_t hx, hy, ix, iy, lx, ly;
 
 	x = creal(z);
 	y = cimag(z);
 
 	EXTRACT_WORDS(hx, lx, x);
 	EXTRACT_WORDS(hy, ly, y);
 
 	ix = 0x7fffffff & hx;
 	iy = 0x7fffffff & hy;
 
 	/* Handle the nearly-non-exceptional cases where x and y are finite. */
 	if (ix < 0x7ff00000 && iy < 0x7ff00000) {
 		if ((iy | ly) == 0)
 			return (CMPLX(cosh(x), x * y));
+
+		sincos(y, &s, &c);
 		if (ix < 0x40360000)	/* |x| < 22: normal case */
-			return (CMPLX(cosh(x) * cos(y), sinh(x) * sin(y)));
+			return (CMPLX(cosh(x) * c, sinh(x) * s));
 
 		/* |x| >= 22, so cosh(x) ~= exp(|x|) */
 		if (ix < 0x40862e42) {
 			/* x < 710: exp(|x|) won't overflow */
-			h = exp(fabs(x)) * 0.5;
-			return (CMPLX(h * cos(y), copysign(h, x) * sin(y)));
+			h = exp(fabs(x)) / 2;
+			return (CMPLX(h * c, copysign(h, x) * s));
 		} else if (ix < 0x4096bbaa) {
 			/* x < 1455: scale to avoid overflow */
 			z = __ldexp_cexp(CMPLX(fabs(x), y), -1);
 			return (CMPLX(creal(z), cimag(z) * copysign(1, x)));
 		} else {
 			/* x >= 1455: the result always overflows */
 			h = huge * x;
-			return (CMPLX(h * h * cos(y), h * sin(y)));
+			return (CMPLX(h * h * c, h * s));
 		}
 	}
 
 	/*
 	 * cosh(+-0 +- I Inf) = dNaN + I (+-)(+-)0.
 	 * The sign of 0 in the result is unspecified.  Choice = product
 	 * of the signs of the argument.  Raise the invalid floating-point
 	 * exception.
 	 *
 	 * cosh(+-0 +- I NaN) = d(NaN) + I (+-)(+-)0.
 	 * The sign of 0 in the result is unspecified.  Choice = product
 	 * of the signs of the argument.
 	 */
 	if ((ix | lx) == 0)		/* && iy >= 0x7ff00000 */
 		return (CMPLX(y - y, x * copysign(0, y)));
 
 	/*
 	 * cosh(+-Inf +- I 0) = +Inf + I (+-)(+-)0.
 	 *
 	 * cosh(NaN +- I 0)   = d(NaN) + I (+-)(+-)0.
 	 * The sign of 0 in the result is unspecified.  Choice = product
 	 * of the signs of the argument.
 	 */
 	if ((iy | ly) == 0)		/* && ix >= 0x7ff00000 */
 		return (CMPLX(x * x, copysign(0, x) * y));
 
 	/*
 	 * cosh(x +- I Inf) = dNaN + I dNaN.
 	 * Raise the invalid floating-point exception for finite nonzero x.
 	 *
 	 * cosh(x + I NaN) = d(NaN) + I d(NaN).
 	 * Optionally raises the invalid floating-point exception for finite
 	 * nonzero x.  Choice = don't raise (except for signaling NaNs).
 	 */
 	if (ix < 0x7ff00000)		/* && iy >= 0x7ff00000 */
 		return (CMPLX(y - y, x * (y - y)));
 
 	/*
 	 * cosh(+-Inf + I NaN)  = +Inf + I d(NaN).
 	 *
 	 * cosh(+-Inf +- I Inf) = +Inf + I dNaN.
 	 * The sign of Inf in the result is unspecified.  Choice = always +.
 	 * Raise the invalid floating-point exception.
 	 *
 	 * cosh(+-Inf + I y)   = +Inf cos(y) +- I Inf sin(y)
 	 */
 	if (ix == 0x7ff00000 && lx == 0) {
 		if (iy >= 0x7ff00000)
 			return (CMPLX(INFINITY, x * (y - y)));
-		return (CMPLX(INFINITY * cos(y), x * sin(y)));
+
+		sincos(y, &s, &c);
+		return (CMPLX(INFINITY * c, x * s));
 	}
 
 	/*
 	 * cosh(NaN + I NaN)  = d(NaN) + I d(NaN).
 	 *
 	 * cosh(NaN +- I Inf) = d(NaN) + I d(NaN).
 	 * Optionally raises the invalid floating-point exception.
 	 * Choice = raise.
 	 *
 	 * cosh(NaN + I y)    = d(NaN) + I d(NaN).
 	 * Optionally raises the invalid floating-point exception for finite
 	 * nonzero y.  Choice = don't raise (except for signaling NaNs).
 	 */
 	return (CMPLX(((long double)x * x) * (y - y),
 	    ((long double)x + x) * (y - y)));
 }
 
 double complex
 ccos(double complex z)
 {
 
 	/* ccos(z) = ccosh(I * z) */
 	return (ccosh(CMPLX(-cimag(z), creal(z))));
 }
+
+#if (LDBL_MANT_DIG == 53)
+__weak_reference(ccosh, ccoshl);
+__weak_reference(ccos, ccosl);
+#endif
diff --git a/lib/msun/src/s_ccoshf.c b/lib/msun/src/s_ccoshf.c
index aeb2dec23677..fa41fdf4c4ea 100644
--- a/lib/msun/src/s_ccoshf.c
+++ b/lib/msun/src/s_ccoshf.c
@@ -1,101 +1,105 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
  *
- * Copyright (c) 2005 Bruce D. Evans and Steven G. Kargl
+ * Copyright (c) 2005-2025 Bruce D. Evans and Steven G. Kargl
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice unmodified, this list of conditions, and the following
  *    disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 /*
  * Float version of ccosh().  See s_ccosh.c for details.
  */
 
 #include <complex.h>
 #include <math.h>
 
 #include "math_private.h"
 
 static const float huge = 0x1p127;
 
 float complex
 ccoshf(float complex z)
 {
-	float x, y, h;
+	float c, h, s, x, y;
 	int32_t hx, hy, ix, iy;
 
 	x = crealf(z);
 	y = cimagf(z);
 
 	GET_FLOAT_WORD(hx, x);
 	GET_FLOAT_WORD(hy, y);
 
 	ix = 0x7fffffff & hx;
 	iy = 0x7fffffff & hy;
 
 	if (ix < 0x7f800000 && iy < 0x7f800000) {
 		if (iy == 0)
 			return (CMPLXF(coshf(x), x * y));
+
+		sincosf(y, &s, &c);
 		if (ix < 0x41100000)	/* |x| < 9: normal case */
-			return (CMPLXF(coshf(x) * cosf(y), sinhf(x) * sinf(y)));
+			return (CMPLXF(coshf(x) * c, sinhf(x) * s));
 
 		/* |x| >= 9, so cosh(x) ~= exp(|x|) */
 		if (ix < 0x42b17218) {
 			/* x < 88.7: expf(|x|) won't overflow */
-			h = expf(fabsf(x)) * 0.5F;
-			return (CMPLXF(h * cosf(y), copysignf(h, x) * sinf(y)));
+			h = expf(fabsf(x)) / 2;
+			return (CMPLXF(h * c, copysignf(h, x) * s));
 		} else if (ix < 0x4340b1e7) {
 			/* x < 192.7: scale to avoid overflow */
 			z = __ldexp_cexpf(CMPLXF(fabsf(x), y), -1);
 			return (CMPLXF(crealf(z), cimagf(z) * copysignf(1, x)));
 		} else {
 			/* x >= 192.7: the result always overflows */
 			h = huge * x;
-			return (CMPLXF(h * h * cosf(y), h * sinf(y)));
+			return (CMPLXF(h * h * c, h * s));
 		}
 	}
 
 	if (ix == 0)			/* && iy >= 0x7f800000 */
 		return (CMPLXF(y - y, x * copysignf(0, y)));
 
 	if (iy == 0)			/* && ix >= 0x7f800000 */
 		return (CMPLXF(x * x, copysignf(0, x) * y));
 
 	if (ix < 0x7f800000)		/* && iy >= 0x7f800000 */
 		return (CMPLXF(y - y, x * (y - y)));
 
 	if (ix == 0x7f800000) {
 		if (iy >= 0x7f800000)
 			return (CMPLXF(INFINITY, x * (y - y)));
-		return (CMPLXF(INFINITY * cosf(y), x * sinf(y)));
+
+		sincosf(y, &s, &c);
+		return (CMPLXF(INFINITY * c, x * s));
 	}
 
 	return (CMPLXF(((long double)x * x) * (y - y),
 	    ((long double)x + x) * (y - y)));
 }
 
 float complex
 ccosf(float complex z)
 {
 
 	return (ccoshf(CMPLXF(-cimagf(z), crealf(z))));
 }
diff --git a/lib/msun/src/s_csinh.c b/lib/msun/src/s_csinh.c
index e7ed10e7d885..11c2ec345094 100644
--- a/lib/msun/src/s_csinh.c
+++ b/lib/msun/src/s_csinh.c
@@ -1,156 +1,165 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
  *
- * Copyright (c) 2005 Bruce D. Evans and Steven G. Kargl
+ * Copyright (c) 2005-2025 Bruce D. Evans and Steven G. Kargl
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice unmodified, this list of conditions, and the following
  *    disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 /*
  * Hyperbolic sine of a complex argument z = x + i y.
  *
  * sinh(z) = sinh(x+iy)
  *         = sinh(x) cos(y) + i cosh(x) sin(y).
  *
  * Exceptional values are noted in the comments within the source code.
  * These values and the return value were taken from n1124.pdf.
  * The sign of the result for some exceptional values is unspecified but
  * must satisfy both sinh(conj(z)) == conj(sinh(z)) and sinh(-z) == -sinh(z).
  */
 
 #include <complex.h>
 #include <math.h>
 
 #include "math_private.h"
 
 static const double huge = 0x1p1023;
 
 double complex
 csinh(double complex z)
 {
-	double x, y, h;
+	double c, h, s, x, y;
 	int32_t hx, hy, ix, iy, lx, ly;
 
 	x = creal(z);
 	y = cimag(z);
 
 	EXTRACT_WORDS(hx, lx, x);
 	EXTRACT_WORDS(hy, ly, y);
 
 	ix = 0x7fffffff & hx;
 	iy = 0x7fffffff & hy;
 
 	/* Handle the nearly-non-exceptional cases where x and y are finite. */
 	if (ix < 0x7ff00000 && iy < 0x7ff00000) {
 		if ((iy | ly) == 0)
 			return (CMPLX(sinh(x), y));
+
+		sincos(y, &s, &c);
 		if (ix < 0x40360000)	/* |x| < 22: normal case */
-			return (CMPLX(sinh(x) * cos(y), cosh(x) * sin(y)));
+			return (CMPLX(sinh(x) * c, cosh(x) * s));
 
 		/* |x| >= 22, so cosh(x) ~= exp(|x|) */
 		if (ix < 0x40862e42) {
 			/* x < 710: exp(|x|) won't overflow */
-			h = exp(fabs(x)) * 0.5;
-			return (CMPLX(copysign(h, x) * cos(y), h * sin(y)));
+			h = exp(fabs(x)) / 2;
+			return (CMPLX(copysign(h, x) * c, h * s));
 		} else if (ix < 0x4096bbaa) {
 			/* x < 1455: scale to avoid overflow */
 			z = __ldexp_cexp(CMPLX(fabs(x), y), -1);
 			return (CMPLX(creal(z) * copysign(1, x), cimag(z)));
 		} else {
 			/* x >= 1455: the result always overflows */
 			h = huge * x;
-			return (CMPLX(h * cos(y), h * h * sin(y)));
+			return (CMPLX(h * c, h * h * s));
 		}
 	}
 
 	/*
 	 * sinh(+-0 +- I Inf) = +-0 + I dNaN.
 	 * The sign of 0 in the result is unspecified.  Choice = same sign
 	 * as the argument.  Raise the invalid floating-point exception.
 	 *
 	 * sinh(+-0 +- I NaN) = +-0 + I d(NaN).
 	 * The sign of 0 in the result is unspecified.  Choice = same sign
 	 * as the argument.
 	 */
 	if ((ix | lx) == 0)		/* && iy >= 0x7ff00000 */
 		return (CMPLX(x, y - y));
 
 	/*
 	 * sinh(+-Inf +- I 0) = +-Inf + I +-0.
 	 *
 	 * sinh(NaN +- I 0)   = d(NaN) + I +-0.
 	 */
 	if ((iy | ly) == 0)		/* && ix >= 0x7ff00000 */
 		return (CMPLX(x + x, y));
 
 	/*
 	 * sinh(x +- I Inf) = dNaN + I dNaN.
 	 * Raise the invalid floating-point exception for finite nonzero x.
 	 *
 	 * sinh(x + I NaN) = d(NaN) + I d(NaN).
 	 * Optionally raises the invalid floating-point exception for finite
 	 * nonzero x.  Choice = don't raise (except for signaling NaNs).
 	 */
 	if (ix < 0x7ff00000)		/* && iy >= 0x7ff00000 */
 		return (CMPLX(y - y, y - y));
 
 	/*
 	 * sinh(+-Inf + I NaN)  = +-Inf + I d(NaN).
 	 * The sign of Inf in the result is unspecified.  Choice = same sign
 	 * as the argument.
 	 *
 	 * sinh(+-Inf +- I Inf) = +-Inf + I dNaN.
 	 * The sign of Inf in the result is unspecified.  Choice = same sign
 	 * as the argument.  Raise the invalid floating-point exception.
 	 *
 	 * sinh(+-Inf + I y)   = +-Inf cos(y) + I Inf sin(y)
 	 */
 	if (ix == 0x7ff00000 && lx == 0) {
 		if (iy >= 0x7ff00000)
 			return (CMPLX(x, y - y));
-		return (CMPLX(x * cos(y), INFINITY * sin(y)));
+
+		sincos(y, &s, &c);
+		return (CMPLX(x * c, INFINITY * s));
 	}
 
 	/*
 	 * sinh(NaN1 + I NaN2) = d(NaN1, NaN2) + I d(NaN1, NaN2).
 	 *
 	 * sinh(NaN +- I Inf)  = d(NaN, dNaN) + I d(NaN, dNaN).
 	 * Optionally raises the invalid floating-point exception.
 	 * Choice = raise.
 	 *
 	 * sinh(NaN + I y)     = d(NaN) + I d(NaN).
 	 * Optionally raises the invalid floating-point exception for finite
 	 * nonzero y.  Choice = don't raise (except for signaling NaNs).
 	 */
 	return (CMPLX(((long double)x + x) * (y - y),
 	    ((long double)x * x) * (y - y)));
 }
 
 double complex
 csin(double complex z)
 {
 
 	/* csin(z) = -I * csinh(I * z) = I * conj(csinh(I * conj(z))). */
 	z = csinh(CMPLX(cimag(z), creal(z)));
 	return (CMPLX(cimag(z), creal(z)));
 }
+
+#if (LDBL_MANT_DIG == 53)
+__weak_reference(csinh, csinhl);
+__weak_reference(csin, csinl);
+#endif
diff --git a/lib/msun/src/s_csinhf.c b/lib/msun/src/s_csinhf.c
index c4392755c482..fcfc011a2484 100644
--- a/lib/msun/src/s_csinhf.c
+++ b/lib/msun/src/s_csinhf.c
@@ -1,102 +1,106 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
  *
- * Copyright (c) 2005 Bruce D. Evans and Steven G. Kargl
+ * Copyright (c) 2005-2025 Bruce D. Evans and Steven G. Kargl
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice unmodified, this list of conditions, and the following
  *    disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 /*
  * Float version of csinh().  See s_csinh.c for details.
  */
 
 #include <complex.h>
 #include <math.h>
 
 #include "math_private.h"
 
 static const float huge = 0x1p127;
 
 float complex
 csinhf(float complex z)
 {
-	float x, y, h;
+	float c, h, s, x, y;
 	int32_t hx, hy, ix, iy;
 
 	x = crealf(z);
 	y = cimagf(z);
 
 	GET_FLOAT_WORD(hx, x);
 	GET_FLOAT_WORD(hy, y);
 
 	ix = 0x7fffffff & hx;
 	iy = 0x7fffffff & hy;
 
 	if (ix < 0x7f800000 && iy < 0x7f800000) {
 		if (iy == 0)
 			return (CMPLXF(sinhf(x), y));
+
+		sincosf(y, &s, &c);
 		if (ix < 0x41100000)	/* |x| < 9: normal case */
-			return (CMPLXF(sinhf(x) * cosf(y), coshf(x) * sinf(y)));
+			return (CMPLXF(sinhf(x) * c, coshf(x) * s));
 
 		/* |x| >= 9, so cosh(x) ~= exp(|x|) */
 		if (ix < 0x42b17218) {
 			/* x < 88.7: expf(|x|) won't overflow */
-			h = expf(fabsf(x)) * 0.5F;
-			return (CMPLXF(copysignf(h, x) * cosf(y), h * sinf(y)));
+			h = expf(fabsf(x)) / 2;
+			return (CMPLXF(copysignf(h, x) * c, h * s));
 		} else if (ix < 0x4340b1e7) {
 			/* x < 192.7: scale to avoid overflow */
 			z = __ldexp_cexpf(CMPLXF(fabsf(x), y), -1);
 			return (CMPLXF(crealf(z) * copysignf(1, x), cimagf(z)));
 		} else {
 			/* x >= 192.7: the result always overflows */
 			h = huge * x;
-			return (CMPLXF(h * cosf(y), h * h * sinf(y)));
+			return (CMPLXF(h * c, h * h * s));
 		}
 	}
 
 	if (ix == 0)			/* && iy >= 0x7f800000 */
 		return (CMPLXF(x, y - y));
 
 	if (iy == 0)			/* && ix >= 0x7f800000 */
 		return (CMPLXF(x + x, y));
 
 	if (ix < 0x7f800000)		/* && iy >= 0x7f800000 */
 		return (CMPLXF(y - y, y - y));
 
 	if (ix == 0x7f800000) {
 		if (iy >= 0x7f800000)
 			return (CMPLXF(x, y - y));
-		return (CMPLXF(x * cosf(y), INFINITY * sinf(y)));
+
+		sincosf(y, &s, &c);
+		return (CMPLXF(x * c, INFINITY * s));
 	}
 
 	return (CMPLXF(((long double)x + x) * (y - y),
 	    ((long double)x * x) * (y - y)));
 }
 
 float complex
 csinf(float complex z)
 {
 
 	z = csinhf(CMPLXF(cimagf(z), crealf(z)));
 	return (CMPLXF(cimagf(z), crealf(z)));
 }