REAL FUNCTION SCASUM(N,CX,INCX) * .. Scalar Arguments .. INTEGER INCX,N * .. * .. Array Arguments .. COMPLEX CX(*) * .. * * Purpose * ======= * * SCASUM takes the sum of the absolute values of a complex vector and * returns a single precision result. * * Further Details * =============== * * jack dongarra, linpack, 3/11/78. * modified 3/93 to return if incx .le. 0. * modified 12/3/93, array(1) declarations changed to array(*) * * ===================================================================== * * .. Local Scalars .. REAL STEMP INTEGER I,NINCX * .. * .. Intrinsic Functions .. INTRINSIC ABS,AIMAG,REAL * .. SCASUM = 0.0e0 STEMP = 0.0e0 IF (N.LE.0 .OR. INCX.LE.0) RETURN IF (INCX.EQ.1) GO TO 20 * * code for increment not equal to 1 * NINCX = N*INCX DO 10 I = 1,NINCX,INCX STEMP = STEMP + ABS(REAL(CX(I))) + ABS(AIMAG(CX(I))) 10 CONTINUE SCASUM = STEMP RETURN * * code for increment equal to 1 * 20 DO 30 I = 1,N STEMP = STEMP + ABS(REAL(CX(I))) + ABS(AIMAG(CX(I))) 30 CONTINUE SCASUM = STEMP RETURN END